the lee company, technical hydraulic handbook

Innovation in Miniature

THE LEE COMPANY

Technical HydraulicHandbook

D

Introduction I

TechnicalHydraulicHandbook2000 Release 10.2

Lee products withcomplete engineering data.

THE LEE COMPANYTECHNICAL CENTER2 Pettipaug Road, P. O. Box 424Westbrook, Connecticut 06498-0424 U.S.A.

Phone: 860 399-6281800 533-7584 (LEE PLUG)

Fax: 860 399-7058 (order entry)860 399-7037 (technical information)

Printed in USA © 1971, 1973, 1976, 1979, 1980, 1984, 1987, 1989, 1996, 1997, 2000

Boston, MassachusettsTel: 617 576-5877Fax: 617 576-5778

Chicago, IllinoisTel: 773 693-0880Fax: 773 693-1015

Clearwater, FloridaTel: 727 538-7711Fax: 727 538-4270

Domestic Sales

Lee Products Limited – LondonTel: + 44 1753 886664Fax: + 44 1753 889588Subsidiary / United Kingdom& Ireland

Lee Company S.A. – ParisTel: + 33 1 30 64 99 44Fax: + 33 1 30 64 91 26Subsidiary / France, Spain & Frenchspeaking Switzerland

Lee Hydraulische – FrankfurtMiniaturkomponenten GmbHTel: + 49 69 905-0660Fax: + 49 69 905-06666Subsidiary / Germany, Austria,Eastern Europe & German speakingSwitzerland

Lee SRL. – MilanTel: + 39 02 43981750Fax: + 39 02 461050Subsidiary / Italy

Distributor for Australiaand New ZealandAviaquip Pty. Ltd.Tel: + 61 3 9585 1211Fax: + 61 3 9585 1837

International SalesDistributor for Belgium,Netherlands and LuxemburgDenis de Ploeg BVTel: + 31 45 405 8686Fax: + 31 45 405 8687

Distributor for Denmark,Sweden, Norway & FinlandParameter ABTel: + 46 8 555 11000Fax: + 46 8 555 11001

Distributor for JapanJupitor CorporationTel: + 81 33 403 1311Fax: + 81 33 403 1319

Distributor for KoreaMin Sung CorporationTel: + 82 2 964 5242 ~ 4Fax: + 82 2 964 5245

Distributor for Taiwanand PRCLoop Link Enterprise, Inc.Tel: + 886 2 2762 9614Fax: + 886 2 2761 3407

Agent for BrazilAGS Comercioe Representacoes Ltda.Tel/Fax: + 55 125 44 2801

IntroductionIIDallas/Ft. Worth, TexasTel: 817 336-9800Fax: 817 336-9805

Detroit, MichiganTel: 248 262-1444Fax: 248 262-1498

Los Angeles, CaliforniaTel: 714 899-2177Fax: 714 899-2176

Seattle, WashingtonTel: 425 488-5842Fax: 425 483-1058

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Introduction III

THE CONTINUING STORY OFLEE COMPANY INNOVATION

For over 50 years, The Lee Company has pioneered thedesign and development of miniature fluid control components.Since its beginning in 1948, The Lee Company premise hasbeen to economically solve problems where existing hardwareis either not immediately available, or is too cumbersome. TheLee Company continues to set the standards for fluid controlcomponents through innovations developed at our TechnicalCenters in Essex and Westbrook, Connecticut.

ENGINEERINGThe Lee story of innovation never ends. Ongoing engineering,research, and development activities create new products andidentify Lee as a company continually advancing the technol-ogy of miniature fluid control components.

Our engineering departments have extensive prototype shopsand test laboratories. Rigorous in-house qualification testprograms ensure our customers receive only fully provenproducts. Lee is fully committed to CAE/CAD/CAM and so-phisticated computer programs enable our engineers to modelmany aspects of our fluid control components' performance.

The Lee Company maintains a ratio of one engineer per sevenemployees. This commitment to technology allows Lee to offerthe best products and technical support available.

Agent for IndiaHind Industrial & MercantileCorp. Pvt. Ltd.Tel: + 91 22 493 3545Fax: + 91 22 493 7465

Agent for IsraelENL Engineering & Logistics Ltd.Tel: + 972 9 950 1542Fax: + 972 9 950 1820

Agent for Russia and the CISR-Avis Ltd.Tel: + 7 095 318 2592Fax: + 7 095 393 4717

Agent for Singapore, Malaysia,Indonesia and ThailandStrategic Technologies Pte, Ltd.Tel: + 65 323 2188Fax: + 65 323 2177

IntroductionIV

MANUFACTURINGThe Lee Company has over 300,000 square feet of modernmanufacturing and office space at two sites located in Westbrookand Essex, Connecticut. Almost all of the manufacturing of Leeproducts including machining, molding, assembling and testingis performed in-house at these two facilities. We are equippedwith the latest production equipment as well as a sophisticatedcomputerized production control system. Substantial invento-ries of standard parts ensure quick delivery.

QUALITY ASSURANCEQuality assurance at The Lee Company is a managementcommitment of the highest order. Our quality systems arebased on MIL-Q-9858A, MIL-I-45208A, MIL-STD-45662, MIL-STD-105D, and NASA 5300.4(1C), and are supported by adocumented lot control and traceability system. The EFSproduct group's quality control system is also based on theFDA's GMP-Good Manufacturing Practices Manual, and theIMH group's system meets or exceeds the rigorous qualitystandards of the automotive industry.

These quality systems, which include extensive use of Statis-tical Process Control, have enabled The Lee Company to beawarded Certified Supplier status by many of our customers.This allows those companies to receive Lee products directlyinto stock saving the costs and delays associated with incominginspection. Quality Assurance surveys, audits, and sourceinspections are always welcomed by Lee. The Lee Company isalso willing to work to any special Q.A. specifications requiredby our customers.

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Introduction V

PRODUCT GROUPSLee is organized into five product groups or "cells". Eachproduct group is comprised of its own engineering, manufac-turing, and sales teams working together to provide betterservice and products. Quicker responses and deliveries, higherquality, lower costs and product innovations to better solveour customers' problems are direct benefits of this approach.

The three "aerospace" product groups supply Lee Plugs,solenoid valves, single and multi-orifice restrictors, nozzles,safety screens, check valves, relief valves, flow controlsand shuttle valves to a wide range of industries. Theseinclude hydraulic and pneumatic applications on commer-cial and military aircraft, spacecraft, missiles, naval vessels,machine tools, downhole oil tools, power generation equip-ment, race cars, etc.

The Electro-Fluidic Systems (EFS) group produces miniaturefluid control components such as solenoid valves, inert fluidhandling components, ink jet printing nozzles, pumps, andmanifold systems primarily for scientific and medical instru-mentation, and ink jet printing applications.

The Industrial MicroHydraulics (IMH) group supplies LeeBetaplugs, Hi-Performance Cheks, and other miniature fluidcontrol components to the automotive, commercial and indus-trial markets. IMH products meet the requirements for quality,economy and ease of automated installation, which are ofparamount importance to these industries.

IntroductionVI

SALES AND SERVICEThe Lee Company is committed to full professional service toour customers through a worldwide sales network of graduateengineers. Lee has sales offices in Los Angeles, Chicago,Dallas, Detroit, and at the Technical Center in Westbrook. Leealso has wholly owned sales and service subsidiaries in Lon-don (Gerrards Cross), Frankfurt, Paris (Voisins-Le-Bretonneux),and Milan and is represented in over forty countries.

If you have a fluid control problem and would like to talk to anengineer, or would like product information, please contact ushere at the Technical Center, or contact the field sales office(see listing on inside cover) nearest you.

MISSION STATEMENTThe Mission of The Lee Company is to design and build stateof the art products that exceed customers' expectations forutility, performance and quality. The Lee Company constantlystrives to improve the product designs, the manufacturingprocess and the quality system. The ultimate goal is zerodefects and a satisfied customer.

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Introduction VII

SPECIAL PRODUCTSThe Lee Company offers many miniature flow control compo-nents other than the standard products described in thishandbook. In fact, approximately 50% of all Lee products arespecial or custom items designed to meet the requirements ofa specific application. The majority of these special productsare minor variations of standard products and may differ onlyslightly in: lohm rate, cracking pressure, leakage, flow testing,materials, etc. . . The remainder are uniquely different fromthe "standards" described in this handbook and include thefollowing:

• threaded "HI-BAR" Lee Plugs• air assisted atomizing nozzles• gas turbine engine fuel nozzles• transmission/gearbox lubrication nozzles• eductors or "jet pumps"• higher temperature and higher flow relief and check

valves• zero-leak relief valves• bypass valves• flow fuses and vapor vent valves• mechanically actuated and indicating valves• absolute upstream pressure regulators (pneumatic)• HI-BAR safety screens of almost any configuration• higher temperature and higher flow solenoid valves

The Lee Company sales and engineering staffs are eager tohelp you in solving your fluid control problems with specialproducts that fill your needs. Please contact your local LeeCompany sales office or the Technical Center in Westbrook,Connecticut for assistance.

VIII IntroductionSpecialProducts

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IXIntroductionSpecialProducts

IntroductionX

D

Section XI

Lee Plugs A

Lee Restrictors B

Lee Flow Controls C

Lee Nozzles D

Lee Chek Valves E

Lee Relief Valves F

Lee Shuttle Valves G

Lee Safety Screens H

Lee Piloting Solenoid Valves I

Lee Line Mounts J

Pressure Components K

Installation L

Engineering M

A

Lee Plugs

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1Lee Plugs

❑ Proof Pressures up to32,000 psid

❑ Sizes from .093" to .656"in Diameter

❑ Aluminum, Stainless Steelor Monel Models Available

❑ High Pressure PlugsAvailable

❑ No Downward PressureDuring Installation

❑ No Support ShoulderRequired

❑ Ideal For Thin WallApplications

❑ Easily Removable

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2

TABLE OF CONTENTS

Materials ...................................................... 4

Proof Pressure ............................................ 5

Surface Treatment of Holes .................. 5

Depth of Holes ............................................. 6

Classes of Fit .............................................. 6

Elongation ................................................... 7

Boss Stress .................................................. 7

Stress Corrosion ...................................... 14

Lee Plugs Aluminum ......................... 16 – 22Stainless Steel .................. 23 – 29Monel ................................ 30 – 33

Metric Aluminum ......................... 34 – 39Lee Plugs Stainless Steel .................. 40 – 45

Lee Plug Removable Plug, sealsR.F.O. in thin walls without

support shoulder ............... 46 – 50

Lee High For High Strength, HighStrength Hardness materials, andPlug for High Pressures ............ 52 – 54

Lee Plug Unscreened Restrictors ............ 55Jets

Lee Plugs

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3

THE PRINCIPLE OF LEE PLUGPERFORMANCE

The Lee Plug is a cylindricalplug with a tapered hole partway through its center andnumerous small grooves onits outside diameter. It isslipped into a reamedcounterbore in the product.A tapered pin is then driveninto the plug until the ends ofthe pin and the plug areflush with each other. Con-trolled expansion causesthe lands and grooves of theplug to "bite" into the sur-rounding material formingindependent seals and re-taining rings. Result: a posi-tive, reliable, leak andtrouble-proof seal for bothliquids and gases. This simple principle opens the wayto vast improvements in design and manufacture ofall fluid devices.

The Lee Plug is simply the most successful method toseal drilled holes for critical applications. Over 100 millionare in use on aircraft, missiles, spacecraft, machine tools,down hole oil tools, molds – anything that requires apermanent leak-proof seal.

Introduction Lee Plugs

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4 Introduction Lee PlugsLee Plugs are manufactured to exacting tolerances.Every process is precisely controlled. Critical dimen-sions are 100% checked and others are statisticallychecked. All plugs and pins are 100% visually inspected.In addition, every lot of Lee Pins and Plugs is productionacceptance tested. A representative sample of the mat-ing pin or plug are performance tested to a Lee Companyprocess specification for installation, leakage, pin reten-tion, proof pressure and thermal stability. Two certifi-cates of performance (one for the pin lot and one for theplug lot) accompany every shipment of Lee Plugs.

Lee Plug brand expander plugs are available in threedifferent versions; the original Lee Plug, the R.F.O. Plug,and the High Strength Plug. The Lee Plug is stocked infour materials in English sizes (2024-T4 or T351 Alumi-num, 416 CRES, 303 CRES, and R405 Monel in longsizes) and three materials (2024-T4 or T351 Aluminum,416 CRES, and 303 CRES) in the metric sizes. Inaddition, Lee Plugs are available in 2024-T6 Al, 6061-T6Al, 316 CRES and 6AL-4V Ti.

For sealing holes in thin walls or fragile materials theR.F.O. plug is available. Because the R.F.O. doesn'trequire a seating shoulder, holes in extra-thin walledcanisters, tanks, piping or ducts can be sealed. Theinstallation system assures that no downward pressureis applied to the product.

For high pressure systems, The Lee Company hasdeveloped the High Strength Plug. The design has beenoptimized for use in high strength/high hardness materi-als such as the precipitation hardenable steels andtitanium commonly found in high pressure systems.

MATERIALSLee Plugs and Pins are made from materials that fallwithin the overall limits of the specifications shown in thishandbook. In fact, The Lee Company exclusively pur-chases mill runs of material controlled to closer physical

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5Introduction Lee Plugsand chemical limits per Lee Company specification. Wedo not approve the use of material meeting only the 416specification.

PLUG PROOF PRESSURETo assist designers in the proper selection of Lee Plugs,a "proof pressure" is given for up to three hole tolerances(Classes I, II, III). The Lee Plug proof pressure is thehighest hydrostatic pressure that may be applied in thecourse of routine Production Acceptance testing.

The Lee Plug proof pressure values stated in this Hand-book are defined for Lee Plugs when installed into bossmaterials identical to that of the Plug. When installing LeePlugs into dissimilar materials, please contact The LeeCompany for proof pressure recommendations.

Lee Plugs should be selected conservatively. This willprovide an additional safety margin for chance situationswhere the installation process might fail to meet specifi-cation or where pressure transients or other factors areunexpectedly severe. As a general guideline, we recom-mend the Proof Pressure of the Lee Plug chosen exceedthe Burst Pressure of the system. Note: AluminumPlugs not recommended for use above 275˚F.

SURFACE TREATMENT OFINSTALLATION HOLESProof pressure data for Lee components is given forinstallation in bosses without any surface treatmenthaving been applied.

Passivating stainless steel installation holes perMIL-S-5002 or QQ-P-35 has no effect on the perfor-mance of Lee components. For aluminum we recom-mend untreated installation holes, however anodizedholes per MIL-A-8625 Type II are generally acceptable.

We do not approve the use of some proprietary surfacetreatments which include the deposition of solid lubri-cants such as Teflon®.®Teflon is a registered trademark of E.I. Dupont de Nemours & Co., Inc.

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6

THE DEPTH OF THE REAMED HOLEThe "A" Dimension on the hole charts shows the depthof the reamed hole recommended for maximum holdingpower. When using the recommended "A" dimensions,the back end of the plug and pin will always be at least0.010 inch below the surface of the material. If it isdesired to improve the appearance of the assembly, andmaximum holding power is not a major concern, then thedepth of the reamed hole can be made to equal the "M"dimension plus 0.010 inch. In doing so, the finishedinstallation will be flush with the material surface. How-ever, this will cause a reduction in proof pressure ofapproximately 20% for short Lee Plugs and 15% forlong Lee Plugs. This procedure is not recommended forHigh Strength Plugs.

SELECTION OF THE PROPER CLASSOF FITAs a general rule, the lowest class of fit compatible withpressure requirements should always be used. This willresult in the lowest possible installed cost of the LeePlug, since the lower the class of fit, the wider thetolerance band on the hole. The looser tolerances obvi-ously reduce machining time and the time required toinspect the reamed hole.

Note that the selection of the lowest class of fit does notensure the lightest interference fit in the reamed hole. Itmerely means that the interference can be anywherefrom light to heavy. On the other hand, the highest classalways ensures the heaviest interference fit. In caseswhere less interference is desirable, you should dimen-sion your reamed hole using the maximum diameterfrom the lowest class and the maximum diameter fromthe next class up. In this way you will have a totaltolerance of .001 inch and the lowest stresses in yourmaterial. Under these conditions the proof pressureswould be the same as for the lowest class fits.


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7

ELONGATIONThe expansion of a Lee Plug causes the boss materialto be deformed, resulting in radial growth of the boss I.D.and O.D. In order to accommodate this growth, someconsideration must be given to the ductility of the bossmaterial. Generally, the boss material should have anelongation of at least 3%.

A typical Lee Plug installation will expand the boss I.D.by approximately 0.003 inch. Since this expansion re-mains relatively constant for all sizes of plugs, thesmallest sizes are subject to the greatest percentagedeformation. The worst case is a 0.093 inch diameterplug which will be expanded to 0.096 inch in a boss,or 3%. Thus, if the boss material has an elongation ofover 3%, the boss will not crack from installation of theLee Plug.

BOSS STRESSNote: In many cases the factor limiting theboss diameter will be the proof pressurerequirement and not the stresses.

The success of the Lee Plug is founded upon its abilityto provide high proof pressures with low, external bossstresses. If a typical installation is considered to be theequivalent of a 0.003 inch interference fit, then the hoopstresses (ST) can be expressed as a function of the Plugdiameter (d), boss diameter (D), and yield point stress intension (SY) of the boss material. The Lee Plug lands andthe boss material plastically deform, and in conjunctionwith the grooves, interlock to form many seals. Thisinterlocking creates discontinuous bands of stresswhich quickly average out to a uniform stress at adiameter within the boss of 1.2d or more.


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8

The boss stresses, both tangential tensile (ST) and theradial compressive (SR) vary throughout the boss. At theinterface between the plug lands and the boss (Pt.#1)SR1 is high and ST1 is low. At Pt.#2, SR2 is low and ST2 hasreached its maximum. At Pt.#3, the only stresses areST3 and the values are shown on the curve of ST3 onpage 9.

Typical Lee Plug Installation

For more detailed analysis ask for your complimentarycopy of our DOS compatible P.C. software "Lee Engi-neering Calculations".


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9Introduction Lee Plugs

The Effect of D/d on Proof

Pressures and Stresses for Plug and

Boss Materials with Similar

Mechanical Properties

A D/d ratio of 2.5 is the minimum recommended byThe Lee Company for cases in which the plug

and boss are of similar materials.

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10

K =

A =

B = at [1 + 0.3 sin (at / 2)] ,at = angle of thin wallsector (deg.)

1B/360 [1 + A (360-B) / B]

1 ,r = Boss wall thickness 1.65 (r-0.97) ratio (T/ t)


1/7

T/ t Ratio: This is the ratio of the maximum boss wallthickness, to the minimum wall thickness. Itis an indication of the nonsymmetry of theboss, and has a value of 1.0 for a round boss.

Angle: The angle is that sector of the boss which isat the minimum wall thickness. A round bosswould have an angle of 360 degrees.

D/d Ratio: This is the ratio of the boss diameter at itsminimum radius, to the plug outside diameter.

*See Lee Technical Report No. 08-91-181 (Analytical Study to EvaluateStresses in Unsymmetrical Lee Plug bosses).

UNSYMMETRICAL BOSS STRESSFor bosses that are not round the analysis is morecomplex, and thus a formula has been developed* to aidin the solution of this difficult problem. The followingformula allows a stress concentration factor, K, to becalculated as a function of certain boss geometric pa-rameters. The formula is reasonably accurate, some-what conservative, and applies to the stress in the plugboss at the minimum wall thickness area.

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11See Figure I for examples of how the geometric param-eters apply to real Lee plug bosses and Figure II, (pg.12) for a plot of the formula results.

A typical problem is solved by using the round bosssolution method with the D/d ratio as described above.The calculated stress is then multiplied by a stressconcentration factor as determined from the formula.

These figures illustrate the applicability of the geometricparameters to variously shaped Lee Plug bosses.

NOTE: Although "t" is always the boss minimum wallthickness, "T" should be selected to be representative ofthe thick wall of the boss.


Figure I

TYPICAL UNSYMMETRICAL BOSSES

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12 Introduction Lee PlugsSTRESS CONCENTRATION FACTOR

vs. boss angle and thickness ratio

Figure II

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13Introduction Lee PlugsBOSS STRESS – DISSIMILAR MATERIALSWhen a Lee Plug is installed in a boss material ofdissimilar mechanical properties, its proof pressure willbe best maintained by observing the D/d ratios shownon the graph below. The stress at the O.D. of the bosswill be below 40% of the tensile yield strength of theboss material when using these curves. This is a stresslevel that has been determined to be satisfactory inmost applications.

Example: A 303 CRES Plug is being designed into a 15-5 PH CRES housing. As can be seen from the graph, aD/d ratio of 1.9 is recommended to assure the ratedproof pressure of the plug. In designing the boss with aD/d ratio of 1.9, the designer achieves a weight savingsof 42% relative to a boss designed with a D/d ratio of 2.5.

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14 Introduction Lee Plugs

BOSS STRESS –DISSIMILAR MATERIALS, continuedWhen a Lee Plug is installed in a weaker boss materialthe holding strength of the plug will be limited by thestrength of the boss material. Though the rated proofpressure will most likely be maintained, the choice of asignificantly weaker boss could lessen the rated proof.The Lee Company should be contacted for technicalassistance if there are questions about the plug/bossstrength compatibility.

When a Lee Plug is installed in a stronger boss materialthe surface finish of the installation hole increases inimportance. If the plug is significantly weaker than theboss material, retention relies more heavily on thefriction at the plug/boss interface than on the pluggrooves. Though the rated proof pressure will mostlikely be maintained, a surface finish smoother than therecommended limit may reduce the proof pressure ofthe plug.

STRESS CORROSIONWhen certain materials are subjected to the combinedeffects of sustained tensile stress and corrosive envi-ronment, over a period of time, structural failure mayoccur at a stress lower than the material would nor-mally withstand. This phenomenon is known as stresscorrosion cracking, and it may occur in an environmentwhich is not severely corrosive in the normal sense. Toavoid failure, tensile stresses must not exceed athreshold value which is a function of the material andthe application.

The boss in which a Lee Plug is installed will generally

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15Introduction Lee Plugsnot be susceptible to stress corrosion cracking if a highlyresistant boss material is used, and the D/d ratio is 2.5or greater. The Lee Plug is not subject to stress corro-sion since it is in compression throughout. Other valuesof D/d may be required if the mechanical properties ofthe boss differ significantly from those of the plug.

(a) All conditions are highly resistant to SCC.

(b) Condition H1000 and above is highly resistant to SCC.*The following alloys have low resistance to SCC, and aregenerally not recommended for Lee plug bosses (partial list):Alum: 2024-T3 & T4, 7075-T6, Cres: 440c (all cond.)

Materials Highly Resistant* toStress Corrosion Cracking

YIELD %ALLOY CONDITION STRESS ELONG.

(MIN.) (MIN.)

2024 Alum T851 58 ksi 5

6061 Alum (a) T6 35 ksi 10

7075 Alum T73 56 ksi 8

355, 356 Cast Alum T6 17 ksi 3

15-5PH Cres (b) H1075 125 ksi 13

300 Series Cres (a) Cold Drawn 75 ksi typ. 35 typ.

4130 Cast SteelQuenched &Tempered 85 ksi 16

6Al-4V Titanium (a) Annealed 120 ksi 10

Monel Alloys (a) Cold Drawn 85 ksi typ. 20 typ.

Inconel Alloy 600 Annealed 35 ksi 30

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16 Aluminum Lee Plug

MATERIALSPIN & PLUG: 2024-T4 or T351 aluminum per QQ-A-225/6

FINISHPIN: Alodine Yellow per MIL-C-5541 & Wax

PLUG: Anodize Green per MIL-A-8625 Type II

For installation/extraction procedure see page L4 – L7. For tool set & oversize part numbers see page L8.

PIN PLUG

093 125LEE SHORT LONG SHORT LONG

PART PLGA PLGA PLGA PLGANUMBER 0930010A 0931010A 1250010A 1251010A

D Max. .0937 .0937 .1250 .1250D Min. .0928 .0928 .1241 .1241C Nom. .098 .143 .128 .193M Nom. .078 .123 .108 .173E Nom. .062 .062 .088 .088K Nom. .069 .069 .095 .095L Nom. .062 .095 .086 .125

Weight (gr.) .03 .04 .06 .10

PROOF PRESSURE (psi x 1000)

CLASS 1 6 10 6 10CLASS 2 8 13 8 13CLASS 3 10 16 10 16

REAM DIAMETERS

CLASS 1 .0937 – .0962 .1250 – .1275CLASS 2 .0937 – .0952 .1250 – .1265CLASS 3 .0937 – .0942 .1250 – .1255

A Min. .097 .145 .125 .195N Dia. Ref. .062 .062 .093 .093

W Min. .125 .125 .125 .125CAD 100 101 102 103

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17Aluminum Lee PlugINSTALLATION HOLE








Weight (gr.) .10 .20 .19 .31



REAM DIAMETERS


A Min. .130 .250 .152 .253N Dia. Ref. .125 .125 .156 .156

W Min. .125 .125 .125 .125CAD 104 105 106 107

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18 Aluminum Lee Plug





PIN PLUG




Weight (gr.) .30 .51 .46 .80



REAM DIAMETERS


A Min. .187 .312 .212 .352N Dia. Ref. .187 .187 .218 .218

W Min. .125 .125 .125 .125CAD 108 109 110 111

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19Aluminum Lee Plug





INSTALLATION HOLE




Weight (gr.) .69 1.0 .91 1.4



REAM DIAMETERS


A Min. .250 .375 .269 .423N Dia. Ref. .250 .250 .281 .281

W Min. .125 .125 .125 .125CAD 112 113 114 115

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20 Aluminum Lee PlugPIN PLUG








Weight (gr.) 1.2 2.0 2.0 3.0



REAM DIAMETERS


A Min. .295 .437 .325 .500N Dia. Ref. .312 .312 .375 .375

W Min. .125 .125 .125 .125CAD 116 117 118 119

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21Aluminum Lee Plug





INSTALLATION HOLE




Weight (gr.) 2.9 4.5 4.9 6.3



REAM DIAMETERS


A Min. .350 .562 .486 .625N Dia. Ref. .437 .437 .500 .500

W Min. .125 .125 .125 .125CAD 120 121 122 123

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22 Aluminum Lee PlugPIN PLUG





656LEE SHORT LONG

PART PLGA PLGANUMBER 6560010A 6561010A

D Max. .6562 .6562D Min. .6553 .6553C Nom. .550 .750M Nom. .470 .660E Nom. .592 .595K Nom. .598 .601L Nom. .390 .590

Weight (gr.) 7.8 11.0


CLASS 1 3 4CLASS 2 4 7CLASS 3 5 10

REAM DIAMETERS

CLASS 1 .6562 – .6587CLASS 2 .6562 – .6577CLASS 3 .6562 – .6567

A Min. .490 .685N Dia. Ref. .625 .625

W Min. .125 .125CAD 124 125

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23Lee PlugStainlessSteelINSTALLATION HOLE


MATERIALSPIN & PLUG: 416 CRES Per QQ-S-763C, Rc 20-34

FINISHPIN: Passivate per QQ-P-35 & Wax

PLUG: Passivate per QQ-P-35




Weight (gr.) .07 .11 .17 .26



REAM DIAMETERS


A Min. .097 .145 .125 .195N Dia. Ref. .062 .062 .093 .093

W Min. .063 .063 .063 .063CAD 200 201 202 203

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24 StainlessSteel Lee Plug

PIN PLUG








Weight (gr.) .28 .56 .51 .82



REAM DIAMETERS


A Min. .130 .250 .152 .253N Dia. Ref. .125 .125 .156 .156

W Min. .063 .063 .063 .063CAD 204 205 206 207

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25StainlessSteel Lee Plug

INSTALLATION HOLE








Weight (gr.) .83 1.4 1.3 2.2



REAM DIAMETERS


A Min. .187 .312 .212 .352N Dia. Ref. .187 .187 .218 .218

W Min. .063 .063 .063 .063CAD 208 209 210 211

A


PIN PLUG








Weight (gr.) 1.9 2.7 2.5 3.9



REAM DIAMETERS


A Min. .250 .375 .269 .423N Dia. Ref. .250 .250 .281 .281

W Min. .063 .063 .063 .063CAD 212 213 214 215

A


INSTALLATION HOLE








Weight (gr.) 3.2 5.0 5.4 7.9



REAM DIAMETERS


A Min. .295 .437 .325 .500N Dia. Ref. .312 .312 .375 .375

W Min. .063 .063 .063 .063CAD 216 217 218 219

A


PIN PLUG








Weight (gr.) 7.9 12.0 13.0 17.0



REAM DIAMETERSCLASS 1 .4687 – .4712 .5312 – .5337CLASS 2 .4687 – .4702 .5312 – .5327CLASS 3 .4687 – .4692 .5312 – .5317

A Min. .350 .562 .486 .625N Dia. Ref. .437 .437 .500 .500W. Min. .063 .063 .063 .063

CAD 220 221 222 223

A


INSTALLATION HOLE





656LEE SHORT LONG

PART PLGA PLGANUMBER 6560020A 6561020A

D Max. .6562 .6562D Min. .6553 .6553C Nom. .550 .750M Nom. .470 .660E Nom. .592 .595K Nom. .598 .601L Nom. .390 .590

Weight (gr.) 22.0 29.0



REAM DIAMETERSCLASS 1 .6562 – .6587CLASS 2 .6562 – .6577CLASS 3 .6562 – .6567

A Min. .490 .685N Dia. Ref. .625 .625

W Min. .063 .063CAD 224 225

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30 Monel Lee PlugPIN PLUG


MATERIALSPIN & PLUG: R405 Monel per QQ-N-281

FINISHPIN: Wax

PLUG: None

093 125 156 187LEE LONG LONG LONG LONG

PART PLGA PLGA PLGA PLGANUMBER 0931400A 1251400A 1561400A 1871400AD Max. .0937 .1250 .1562 .1875D Min. .0928 .1241 .1553 .1866C Nom. .143 .193 .245 .260M Nom. .123 .173 .215 .235E Nom. .062 .088 .115 .146K Nom. .069 .095 .118 .154L Nom. .095 .125 .175 .181

Weight (gr.) .11 .26 .64 .95



REAM DIAMETERSCLASS 1 .0937 - .0962 .1250 - .1275 .1562 - .1587 .1875 - .1900CLASS 2 .0937 - .0952 .1250 - .1265 .1562 - .1577 .1875 - .1890CLASS 3 .0937 - .0942 .1250 - .1255 .1562 - .1567 .1875 - .1880

A Min. .145 .195 .250 .253N Dia. Ref. .062 .093 .125 .156

W Min. .063 .063 .063 .063CAD 201 203 205 207

A

31Monel Lee PlugINSTALLATION HOLE

For installation/extraction procedure see page L4 – L7. For tool set & oversize part numbers see page L9-L10.


FINISHPIN: Wax

PLUG: None

218 250 281 343LEE LONG LONG LONG LONG

PART PLGA PLGA PLGA PLGANUMBER 2181400A 2501400A 2811400A 3431400AD Max. .2187 .2500 .2812 .3437D Min. .2178 .2491 .2803 .3428C Nom. .307 .365 .370 .500M Nom. .277 .333 .340 .410E Nom. .178 .204 .240 .303K Nom. .181 .212 .244 .308L Nom. .218 .265 .280 .335

Weight (gr.) 1.6 2.6 3.1 5.7



REAM DIAMETERSCLASS 1 .2187 - .2212 .2500 - .2525 .2812 - .2837 .3437 - .3462CLASS 2 .2187 - .2202 .2500 - .2515 .2812 - .2827 .3437 - .3452CLASS 3 .2187 - .2192 .2500 - .2505 .2812 - .2817 .3437 - .3442

A Min. .312 .352 .375 .437N Dia. Ref. .187 .218 .250 .312

W Min. .063 .063 .063 .063CAD 209 211 213 217

A

32 Monel Lee PlugPIN PLUG



FINISHPIN: Wax

PLUG: None

406 468LEE LONG LONG

PART PLGA PLGANUMBER 4061400A 4681400AD Max. .4062 .4687D Min. .4053 .4678C Nom. .565 .620M Nom. .465 .530E Nom. .365 .428K Nom. .370 .433L Nom. .397 .460

Weight (gr.) 9.0 14.0



REAM DIAMETERSCLASS 1 .4062 - .4087 .4687 - .4712CLASS 2 .4062 - .4077 .4687 - .4702CLASS 3 .4062 - .4067 .4687 - .4692

A Min. .500 .562N Dia. Ref. .375 .437

W Min. .063 .063CAD 219 221

A

33Monel Lee PlugINSTALLATION HOLE



FINISHPIN: Wax

PLUG: None

531 656LEE LONG LONG

PART PLGA PLGANUMBER 5311400A 6561400AD Max. .5312 .6562D Min. .5303 .6553C Nom. .680 .750M Nom. .590 .660E Nom. .490 .595K Nom. .495 .601L Nom. .522 .590

Weight (gr.) 20.0 34.0



REAM DIAMETERSCLASS 1 .5312 - .5337 .6562 - .6587CLASS 2 .5312 - .5327 .6562 - .6577CLASS 3 .5312 - .5317 .6562 - .6567

A Min. .625 .685N Dia. Ref. .500 .625

W Min. .063 .063CAD 223 225

A

34 Aluminum Metric Lee Plug



PLUG: Anodize Brown per MIL-A-8625 Type IIFor installation/extraction procedure see page L4 – L7. For tool set part numbers see page L11.*DIN 7154 tolerances fall within ream tolerances.

PIN PLUG

2,50 3,00 3,50LEE SHORT SHORT SHORT

PART PLGM PLGM PLGMNUMBER 0250010A 0300010A 0350010AD Max. 2,50 3,00 3,50D Min. 2,48 2,98 3,48C Nom. 2,75 3,20 3,66M Nom. 2,24 2,65 3,00E Nom. 1,69 2,07 2,38K Nom. 1,88 2,26 2,56L Nom. 1,89 2,27 2,66

Weight (gr.) 0,04 0,06 0,09

PROOF PRESSURE (MPa)

CLASS 1 49 49 49CLASS 2 59 69 59CLASS 3 69 88 88

REAM DIAMETERSCLASS 1 H11* 2,50-2,56 H10* 3,00-3,06 H10* 3,50-3,56CLASS 2 H9* 2,50-2,54 H9* 3,00-3,04 H9* 3,50-3,54CLASS 3 H7* 2,50-2,51 H7* 3,00-3,01 H7* 3,50-3,51

A Min. 2,7 3,1 3,4N Dia. Ref. 1,7 2,2 2,7

W Min. 3,2 3,2 3,2CAD 130 132 134

A

35Aluminum Metric Lee PlugINSTALLATION HOLE




4,00 4,50LEE SHORT LONG SHORT LONG

PART PLGM PLGM PLGM PLGMNUMBER 0400010A 0401010A 0450010A 0451010A

D Max. 4,00 4,00 4,50 4,50D Min. 3,98 3,98 4,48 4,48C Nom. 4,09 6,63 4,55 7,19M Nom. 3,40 6,10 3,81 6,61E Nom. 2,88 2,88 3,38 3,38K Nom. 3,08 3,07 3,58 3,57L Nom. 2,96 5,48 3,29 6,03

Weight (gr.) 0,13 0,22 0,18 0,30



REAM DIAMETERSCLASS 1 H10* 4,00 - 4,06 H10* 4,50 - 4,56CLASS 2 H9* 4,00 - 4,04 H9* 4,50 - 4,54CLASS 3 H7* 4,00 - 4,01 H7* 4,50 - 4,51

A Min. 3,9 6,6 4,3 7,1N Dia. Ref. 3,2 3,2 3,7 3,7

W Min. 3,2 3,2 3,2 3,2CAD 136 137 138 139

A





PIN PLUG


PART PLGM PLGM PLGM PLGMNUMBER 0500010A 0501010A 0550010A 0551010AD Max. 5,00 5,00 5,50 5,50D Min. 4,98 4,98 5,48 5,48C Nom. 4,98 7,75 5,36 8,31M Nom. 4,22 7,12 4,60 7,62E Nom. 3,88 3,88 4,38 4,38K Nom. 4,08 4,07 4,59 4,57L Nom. 3,72 6,47 4,08 6,87

Weight (gr.) 0,25 0,39 0,33 0,51




A Min. 4,7 7,6 5,1 8,1N Dia. Ref. 4,2 4,2 4,7 4,7

W Min. 3,2 3,2 3,2 3,2CAD 140 141 142 143

A







Weight (gr.) 0,43 0,64 0,53 0,81




A Min. 5,5 8,6 6,0 9,1N Dia. Ref. 5,2 5,2 5,7 5,7

W Min. 3,2 3,2 3,2 3,2CAD 144 145 146 147

A




PLUG: Anodize Brown per MIL-A-8625 Type II

For installation/extraction procedure see page L4 – L7. For tool set part numbers see page L12.*DIN 7154 tolerances fall within ream tolerances.

PIN PLUG



Weight (gr.) 0,66 1,0 0,81 1,2




A Min. 6,4 9,6 6,8 10,1N Dia. Ref. 6,2 6,2 6,7 6,7

W Min. 3,2 3,2 3,2 3,2CAD 148 149 150 151

A





8,00LEE SHORT LONG

PART PLGM PLGMNUMBER 0800010A 0801010AD Max. 8,00 8,00D Min. 7,98 7,98C Nom. 7,62 11,05M Nom. 6,74 10,11E Nom. 6,88 6,88K Nom. 7,05 7,05L Nom. 5,69 9,02

Weight (gr.) 0,99 1,5



REAM DIAMETERSCLASS 1 H10* 8,00 - 8,06CLASS 2 H9* 8,00 - 8,04CLASS 3 H6* 8,00 - 8,01

A Min. 7,2 10,6N Dia. Ref. 7,2 7,2

W Min. 3,2 3,2CAD 152 153

A

40 Metric Lee PlugStainlessSteel



PLUG: Passivate per QQ-P-35For installation/extraction procedure see page L4 – L7. For tool set part numbers see page L11.*DIN 7154 tolerances fall within ream tolerances.

PIN PLUG

2,50 3,00 3,50LEE SHORT SHORT SHORT

PART PLGM PLGM PLGMNUMBER 0250020A 0300020A 0350020AD Max. 2,50 3,00 3,50D Min. 2,48 2,98 3,48C Nom. 2,75 3,20 3,66M Nom. 2,24 2,65 3,00E Nom. 1,69 2,07 2,47K Nom. 1,86 2,24 2,64L Nom. 1,89 2,27 2,66

Weight (gr.) 0,11 0,16 0,24


CLASS 1 98 98 98CLASS 2 113 113 113CLASS 3 137 137 137

REAM DIAMETERSCLASS 1 H11* 2,50-2,56 H10* 3,00-3,06 H10* 3,50-3,56CLASS 2 H9* 2,50-2,54 H9* 3,00-3,04 H9* 3,50-3,54CLASS 3 H7* 2,50-2,51 H7* 3,00-3,01 H7* 3,50-3,51

A Min. 2,7 3,1 3,4N Dia. Ref. 1,7 2,2 2,7

W Min. 1,6 1,6 1,6CAD 230 232 234

A

41Metric Lee PlugStainlessSteel

INSTALLATION HOLE






Weight (gr.) 0,36 0,61 0,51 0,84




A Min. 3,9 6,6 4,3 7,1N Dia. Ref. 3,2 3,2 3,7 3,7

W Min. 1,6 1,6 1,6 1,6CAD 236 237 238 239

A





PIN PLUG



Weight (gr.) 0,71 1,1 0,92 1,4




A Min. 4,7 7,6 5,1 8,1N Dia. Ref. 4,2 4,2 4,7 4,7

W Min. 1,6 1,6 1,6 1,6CAD 240 241 242 243

A


INSTALLATION HOLE






Weight (gr.) 1,2 1,8 1,5 2,3



REAM DIAMETERS

CLASS 1 H10* 6,00 - 6,06 H10* 6,50 - 6,56CLASS 2 H9* 6,00 - 6,04 H9* 6,50 - 6,54CLASS 3 H6* 6,00 - 6,01 H6* 6,50 - 6,51

A Min. 5,5 8,6 6,0 9,1N Dia. Ref. 5,2 5,2 5,7 5,7

W Min. 1,6 1,6 1,6 1,6CAD 244 245 246 247

A





PIN PLUG



Weight (gr.) 1,8 2,8 2,2 3,4



REAM DIAMETERS

CLASS 1 H10* 7,00 - 7,06 H10* 7,50 - 7,56CLASS 2 H9* 7,00 - 7,04 H9* 7,50 - 7,54CLASS 3 H6* 7,00 - 7,01 H6* 7,50 - 7,51

A Min. 6,4 9,6 6,8 10,1N Dia. Ref. 6,2 6,2 6,7 6,7

W Min. 1,6 1,6 1,6 1,6CAD 248 249 250 251

A


INSTALLATION HOLE




8,00LEE SHORT LONG

PART PLGM PLGMNUMBER 0800020A 0801020AD Max. 8,00 8,00D Min. 7,98 7,98C Nom. 7,62 11,05M Nom. 6,74 10,11E Nom. 6,97 6,97K Nom. 7,14 7,10L Nom. 5,69 9,02

Weight (gr.) 2,8 4,1



REAM DIAMETERS

CLASS 1 H10* 8,00 - 8,06CLASS 2 H9* 8,00 - 8,04CLASS 3 H6* 8,00 - 8,01

A Min. 7,2 10,6N Dia. Ref. 7,2 7,2

W Min. 1,6 1,6CAD 252 253

A

46 R.F.O. Lee Plug

LEEPART

NUMBER

For installation/extraction procedure see page L15 – L17. For tool set part numbers see page L18.

MATERIALSPIN: 416 Cres per QQ-S-763CPLUG: 2024-T4 or T351 aluminum per QQ-A-225/6

FINISHPIN: Passivate per QQ-P-35


PIN PLUG

156 187 218PLRA PLRA PLRA

1560010A 1870010A 2180010A

D Max. .1562 .1875 .2187D Min. .1553 .1866 .2178C Nom. .417 .500 .500M Nom. .380 .460 .460E Nom. .119 .146 .174K Nom. .125 .154 .180L Nom. .115 .150 .150X .090 .105 .117Z .086-64 .099-56 .112-48

Weight (gr.) .30 .57 .80

PROOF PRESSURE (psi)

CLASS 2 5000 5000 5000CLASS 3 6000 6000 6000

REAM DIAMETERS

CLASS 2 .1562 - .1577 .1875 - .1890 .2187 - .2202CLASS 3 .1562 - .1567 .1875 - .1880 .2187 - .2192

A Min. .16 .17 .17B Min. .06 .07 .08CAD 160 162 164

A

47R.F.O. Lee PlugINSTALLATION HOLE





LEEPART

NUMBER

250 281PLRA PLRA

2500010A 2810010A

D Max. .2500 .2812D Min. .2491 .2803C Nom. .562 .562M Nom. .510 .510E Nom. .204 .240K Nom. .212 .245L Nom. .220 .193X .144 .190-32Z .138-40 .164-36

Weight (gr.) 1.1 1.3


CLASS 2 4000 3000CLASS 3 5000 4000

REAM DIAMETERS

CLASS 2 .2500 - .2515 .2812 - .2827CLASS 3 .2500 - .2505 .2812 - .2817

A Min. .23 .24B Min. .08 .09CAD 166 168

A

48 R.F.O. Lee Plug


LEEPART

NUMBER




343PLRA

3430010AD Max. .3437D Min. .3428C Nom. .600M Nom. .320MM Nom. .500E Nom. .286K Nom. .291L Nom. .216X .216-28Y Max. .260Z .190-32

Weight (gr.) 1.8


CLASS 2 3000CLASS 3 4000

REAM DIAMETERSCLASS 2 .3437 - .3452CLASS 3 .3437 - .3442

A Min. .32B Min. .09CAD 170

PIN PLUG

A

49R.F.O. Lee Plug


LEEPART

NUMBER

INSTALLATION HOLE


FINISHPIN: Alodine Yellow per MIL-C-5541


406 468 500 531PLRA PLRA PLRA PLRA

4060010A 4680010A 5000010A 5310010AD Max. .4062 .4687 .5000 .5312D Min. .4053 .4678 .4991 .5303C Nom. .700 .800 .870 .870M Nom. .400 .450 .500 .500MM Nom. .550 .640 .720 .720E Nom. .352 .420 .446 .478K Nom. .357 .428 .451 .485L Nom. .256 .355 .415 .375X .216-28 .250-28 .250-28 .250-28Y Max. .330 .390 .390 .390Z .190-32 .216-28 .216-28 .216-28

Weight (gr.) 2.4 3.7 4.6 5.2


CLASS 2 2500 2500 2500 2500CLASS 3 3500 3500 3500 3500

REAM DIAMETERSCLASS 2 .4062 - .4077 .4687 - .4702 .5000 - .5015 .5312 - .5327CLASS 3 .4062 - .4067 .4687 - .4692 .5000 - .5005 .5312 - .5317

A Min. .40 .40 .40 .40B Min. .10 .10 .11 .13CAD 172 174 176 178

A

50 R.F.O. Lee Plug

For installation/extraction procedure see page L15– L17. For tool set part numbers see page L18.

LEEPART

NUMBER


FINISHPIN: Alodine Yellow per MIL-C-5541


656 750 875PLRA PLRA PLRA

6560010A 7500010A 8750010AD Max. .6562 .7500 .8750D Min. .6553 .7491 .8741C Nom. 1.000 1.160 .960M Nom. .600 .700 .500MM Nom. .830 1.100 .720E Nom. .593 .670 .795K Nom. .599 .676 .801L Nom. .514 .590 .370X .3125-24 .3125-24 .375-24Y Max. .420 .560 .680Z .250-28 .250-28 .3125-24

Weight (gr.) 9.2 13.0 16.0


CLASS 2 2500 2000 1500CLASS 3 3500 3000 2500

REAM DIAMETERSCLASS 2 .6562 - .6577 .7500 - .7515 .8750 - .8765CLASS 3 .6562 - .6567 .7500 - .7505 .8750 - .8755

A Min. .51 .70 .51B Min. .13 .13 .15CAD 180 182 184

PIN PLUG

A

51Notes

A

52 High Strength Lee Plug

LEEPART

NUMBER

For installation/extraction procedure see page L4 – L7. For oversize Lee Plugs see page L8.

MATERIALS

PIN & PLUG: 15-5 PH CRES per AMS 5659

FINISH

PIN: Passivate per QQ-P-35 & Wax

PLUG: Passivate per QQ-P-35/Chromium Composite

PIN PLUG

093 125 156 187PLHA PLHA PLHA PLHA

0931241A 1251241A 1561241A 1871241AD Max. .0937 .1250 .1562 .1875D Min. .0928 .1241 .1553 .1866C Nom. .134 .174 .214 .254M Nom. .106 .142 .178 .218E Nom. .060 .085 .114 .144K Nom. .067 .092 .122 .152L Nom. .083 .111 .139 .166

Weight (gr.) .09 .24 .45 .79


32 32 32 32

REAM DIAMETERS

.0937 - .0947 .1250 - .1260 .1562 - .1572 .1875 - .1885

A Min. .122 .161 .198 .233N Dia. Ref. .062 .093 .125 .156

W Min. .060 .060 .060 .060

CAD 271 273 275 277

A

53High Strength Lee PlugINSTALLATION HOLE

LEEPART

NUMBER


MATERIALS


FINISH



218 250 281 312PLHA PLHA PLHA PLHA

2181241A 2501241A 2811241A 3121241A


Weight (gr.) 1.2 1.8 2.6 3.5


32 32 32 32

REAM DIAMETERS

.2187 - .2197 .2500 - .2510 .2812 - .2822 .3124 - .3134

A Min. .268 .305 .340 .375N Dia. Ref. .187 .218 .250 .281

W Min. .060 .060 .060 .060

CAD 279 281 283 285

A

54 High Strength Lee Plug

LEEPART

NUMBER


PIN PLUG

MATERIALS


FINISH



343PLHA

3431241AD Max. .3437D Min. .3428C Nom. .445M Nom. .390E Nom. .294K Nom. .302L Nom. .305

Weight (gr.) 4.7


32

REAM DIAMETERS

.3437 - .3447

A Min. .410N Dia. Ref. .312

W Min. .060CAD 287

A

55Lee PlugsINSTALLATION HOLE

Lee Plug Jets cannot be manufacturedfrom Lee Plugs as the passivation, thewax coating on the pin, and the taperedexpansion surfaces would be adverselyaffected. Any such rework of Lee Plugsis not a recommended practice andwill void our warranty.

Lee Plug Jets

Lee Plug Jets offer an economical solution for fluidmetering applications that do not require the accu-racy, removability, or protective screens that areavailable in other, more sophisticated LeeRestrictors. Lee Plug Jets are available in 416Stainless Steel material in body diameters of0.125, 0.187 and 0.250 inch, with chamfered ori-fices of 0.022 inch through 0.093 inch in diameter.A complete specification sheet is available onrequest. Flow performance may be estimated byconverting the orifice diameter of the Lee Plug Jetinto Lohms as shown on the graph on page M4.

B

Lee Restrictors

1

B

❑ Large Minimum Passage Sizes

❑ Reduces Contamination Problems

❑ Provides Viscosity Compensation

❑ Prevents Cavitation

❑ Reduces Erosion

❑ Available in a Wide Variety ofBody Sizes

❑ High Pressure Units Available

Lee Restrictors

❑ Wide Range of Metered LohmRates Available

❑ Integral Safety Screens

❑ Available in ±2% or ±5% Tolerances

2

B

Introduction Lee RestrictorsTABLE OF CONTENTS

Lee Jet Single-stage restrictor800 – 30,000 Lohms ........4, 16 – 19

Lee High Single-stage restrictorWatt Jet 200 – 1000 Lohms ...........4, 20 – 21

Lee Single-stage restrictorKilowatt Jet 90-200 Lohms ..................4, 22 – 23

Lee Single-stage restrictorMicrojet 475-3100 Lohms ..............4, 24 – 27

Lee Bender Multi-Orifice RestrictorJet 1900 – 9500 Lohms .........5, 28 – 29

Lee Axial Multi-Orifice RestrictorVisco Jet 680 – 11,000 Lohms ........5, 30 – 37

Lee JEVA Visco Jet, 93 ContiguousLohm rates. 3520 –313,000 Lohms ................5, 38 – 41

Lee Highest Lohm Rates. Up toVisco 0.055" passage sizes. 1370 –Jet 2,200,000 Lohms ............. 5, 42 – 49

Lee Single-stage restrictor5k Jet 1000 – 20,000 Lohms .... 12, 50 – 53

Lee High High PressurePressure Screened RestrictorHigh Watt Jet 350 – 3000 Lohms .........12, 54 – 57

Lee High High PressurePressure Multi-Orifice RestrictorBender Jet 1900 – 9500 Lohms ....... 12, 58 – 59

Lee High .125" and .187"Pressure diameter High PressureVisco Jet Visco Jet. 11,200 –

313,000 Lohms ..............12, 60 – 63

Lee CRO Cascade RestrictorOrifice in disc form825 – 1140 Lohms .................13, 64

3

B

Introduction Lee Restrictors

Lee Company restrictors have become the accepted“standards” worldwide. Design engineers find their smallsize, light weight, and proven reliability are indispen-sable when the flow of fluids has to be controlled.

Our miniature precision flow restrictors are specified bymanufacturers of aircraft hydraulic and fuel control sys-tems, oil drilling equipment, missile controls, machinetools, and countless other products. Lee restrictors area vital part of almost every military and commercialaircraft manufactured in the world. By employing al-ready proven and qualified Lee restrictors in their de-signs, design engineers are using their own time andtalents much more productively.

Lee offers a wide selection of single-stage or multi-stageorifices. Lee Jets, High Watt and Kilowatt Jets, and theLee Microjet are all single orifice restrictors. Lee HighWatt and Kilowatt Jets handle low Lohm rates (high flowrates) while higher Lohm rates (lower flow rates) arecovered by Lee Jets.

The multi-orifice restrictors consist of Bender Jets andmany different versions of the Visco Jet. Bender Jetsemploy several non-coaxial orifices in series using bend-ing and multiple orifices to increase restriction. TheVisco Jet adds the dimension of spin chambers for evenhigher restriction. Visco Jets range from small inserts allthe way up to large cartridge versions, offering manyoptions in minimum passage, Lohm rate and size.

Also available is a complete range of high pressurerestrictors: Jets, High Watt Jets, Bender Jets and ViscoJets. Lee offers a restrictor for every application!

4

B

Introduction Lee RestrictorsLEE JETSLee Jets are the simplest, most accurate, most economi-cal jets ever developed! You simply insert Lee Jets intoreamed holes and lock and seal them by pressing the pininto the body. You specify either the flow and pressuredrop or use the Lohm system. Lee Jets do the rest.Quick, easy installation eliminates costly assemblies,seals, threads, flow testing and filter design. The LeeCompany 100% flow tests all Lee Jets to two standardtolerances, ±2% and ±5%.

Each Lee Jet unit contains a calibrated orifice, twomatched safety screens so you can flow in both direc-tions, and the reliable locking and sealing device adaptedfrom Lee Plugs, which have been accepted for years asthe best way to seal drilled holes.

Lee Jets are available from stock in a wide range of 53Lohm ratings from 800 to 30,000 Lohms. Lee Jetsimprove your design saving time, space and money.

HIGH WATT and KILOWATT JETSLee High Watt and Kilowatt Jets provide accurate,screened, bidirectional metered flow in the 90-1000Lohm range. The integral screens are machined anddrilled from bar stock for maximum strength and erosionresistance. Due to their rugged construction, they canreadily withstand the high power dissipation that is oftenassociated with low Lohm applications. For instance, a200 Lohm JEHA1875200L dissipates 9.6 horsepower,or 7.1 kilowatts, at 3000 psi differential. Use these strongHigh Watt and Kilowatt Jets for all low Lohm (high flow)applications. Lee High Watt Jets are available in ±2%and ±5% tolerances and Kilowatt Jets in a ±5% Lohmrate tolerance.

MICROJETSLee Microjets are precision calibrated orifices designedfor flow balancing in liquid cooling applications wheresystem pressures are below 500 psid. Lohm rates range

5

B

Introduction Lee Restrictorsfrom 475 to 3100 Lohms and Microjets are 100% flowtested to a ±2% tolerance, unidirectionally. Lee Microjetsare protected in the flow direction by an integral safetyscreen and are also easily installed and extracted, facili-tating easy flow balancing.

Lee Microjets are easily installed into heat exchangerreturn ports. Their small size allows them to be locateddirectly behind quick disconnect fittings.

BENDER JETSThe Lee Bender Jets incorporate multiple orifices inseries, with successive orifices on the centerline anddisplaced from it, to force fluid to “bend” as it passesthrough the unit. The combined effect is an increase inthe orifice size for a given Lohm rate. The orifices arebigger than a single orifice, but not as large as thepassageways in a Lee Visco Jet. All units are protectedwith two integral safety screens for bi-directional flow,and are available calibrated to a ±5% tolerance in the1900 to 9500 Lohm range.

AXIAL VISCO JETSThe Lee Axial Visco Jet also uses multiple orifices inseries, but uses spinning to increase Lohm rate. Spinnerdiscs alternately reversethe direction of spin ofthe fluid. The result is alarger passage size thana Bender Jet for a givenLohm rate but smallerthan a Visco Jet. Rug-ged screens protect theorifice in both flow direc-tions. Axial Visco Jetsare available calibratedto a ±5% tolerance inthe 680 to 11,000 Lohmrange.

6

B

Introduction Lee RestrictorsVISCO JETSLee Visco Jets come in two insert versions (18-Seriesand the JEVA) and 3 cartridge sizes (43-Series, 68-Series and the 14-Series). The 18-Series Visco Jet is aninsert with 12 different Lohm rates from 11,200 to313,000 Lohms. The JEVA is a radically new version ofthe 18-Series Visco Jet. It incorporates vastly increasedminimum passage sizes for corresponding Lohm rates:up to 90% increase over some existing 18-Series units.In addition, 93 Lohm rates completely cover an ex-tended range from 3520 to 313,000 Lohms.

The 43-Series, 68-Series and 14-Series Visco Jets arecartridge mount units that offer the largest minimumpassage for a given Lohm rate as well as the highestLohm rates available. For instance, a 4000 Lohm 14-Series Visco has a minimum passage of 0.055 inch. A4000 Lohm single orifice would be about 0.012 inch indiameter. One of the 43-Series Viscos offers a Lohmrate of 2,200,000 Lohms, with a 0.005 inch minimumpassage, the equivalent of a 0.0006 inch diametersingle orifice.

All Lee Visco Jets are available calibrated to a ±5% or±10% tolerance. Visco Jets with minimum passagewaysof 0.032 inch or less are protected with two safetyscreens for bi-directional flow applications.

THE PRINCIPLE BEHIND THE UNIQUELEE VISCO JET PERFORMANCEThe Visco Jet consists basi-cally of three discs mountedone upon the other to forman extremely complex fluidpassage. Fluid enters at thecenter of one disc andpasses through a slot whichis tangential to a spin cham-ber. This discharges througha small center hole into

7

B

Introduction Lee Restrictorsanother chamber. This process repeats over and over.Since the spinning liquid makes many revolutions ineach spin chamber, the resulting fluid resistance usesthe flow passage surfaces many times. The tangentialnature of the slots overcomes sensitivity to viscosity.The centrifugal force of the liquid maintains a backpressure on the discharge ofthe slot which is proportionalto the square of the RPM ofthe spinning liquid.

This provides a reasonabledegree of viscosity compen-sation without the use of anymoving parts.

Some Lee Visco Jets aremade from solid stainlesssteel discs, while others arefabricated from photo-etchedstainless steel plates whichare bonded together to produce a homogeneous leak-proof product. All Visco elements are rigidly and perma-nently retained in their respective inserts, cartridges, orlinemounts. Standard Lee Visco Jets are calibrated tothe noted Lohm ratings in both directions.

REDUCES CLOGGINGThere are always some particles of dirt or metal or lintin any hydraulic system even after it has been cleanedand filtered. Sometimes the hydraulic equipment actu-ally generates these particles due to moving parts andthere are always many more small particles than thereare large ones. The size and number of these particleslimit the orifice size which can be used for fluidrestrictors. If a small orifice clogs, it usually meansfailure of a complete system.

The use of the Lee Visco Jet enables you to use muchlarger passages and still obtain the same amountof restriction which your system demands. Since the

FLUID FLOW

8

B

Introduction Lee Restrictorsminimum passageways in the Lee Visco Jet are largerthan for an ordinary orifice, it also means that the holesize in protecting screens may be made proportionatelylarger. With both larger passageways and larger screenhole sizes, your system will tolerate a much higher levelof contamination. Any particle which will pass throughthe screens, which we use to protect our Visco Jets, willalso pass right through the Visco Jet without causing anyblockage or build-up of fluid restriction. Now you canuse the fluid resistance values you need without fear ofsystem failure due to contamination.

LOHMS VERSUS HOLE SIZEAn example of this is shown by a Visco Jet having 0.015inch diameter holes and flowing at the same Lohm rate(32,600 Lohms) as the Standard Lee Jet having 0.0048inch hole size. Thus the same Lohm rate can be ob-tained with 3.1 times the hole diameter and over 9 timesthe hole area!

28,000 3200 700 220

145,000 32,600 8800 4000

313,000 73,000 19,600 8900

TO PREVENT CLOGGINGYOU NEED LARGER HOLES

Compare these values:

HOLE SIZE 0.005 0.015 0.032 0.055

Lohms for standardLee Jet

Lohms for 1 StageLee Visco Jet

Lohms for 5 StageLee Visco Jet

If you need a high Lohm rate Jet, but are concerned with thepossibility of clogging, even when protected by safety screens,you can get the same resistance to flow (Lohms) by using aVisco Jet with holes FIVE TIMES AS LARGE!

9

B


Comparable area of flow passage(25 times greater) using Visco-Jetwith SAME Lohm rate.

NORMALMETERING

HOLE

REDUCES EROSIONThe unique Lee Visco Jet principle can provide anincrease in flow passage as great as 25 times that of acorresponding (same Lohm rate) single stage restrictor,with a corresponding reduction in velocity. Since erosionis a function of the square of the velocity of the liquidmedium, erosion can be reduced to 1/625 of that of thesimple restrictor. Actual life tests have indicated thatunder certain conditions, a Lee Visco Jet can be ex-pected to function without an appreciable change inLohm rating for up to 20 years of continuous operation.

PREVENTS CAVITATIONLiquid flowing through any orifice will cavitate wheneverits velocity causes the pressure in the throat of the orificeto drop below the vapor pressure of the flowing liquid.Even though there may be a high supply pressure anda high back pressure on an orifice, if the velocity is highenough there will be a subsequent lowering of thepressure in the throat of the orifice and the possibility ofcavitation.

The effects of cavitation are unstable flow and erosion –both of which are undesirable. To prevent cavitation,

10

B

Introduction Lee Restrictorssufficiently high throat pressure must be maintained,either by:

1. Applying sufficiently high back pressure or2. Reducing the velocity of the liquid as it flows through

the restrictor.

The Lee Company manufactures a wide variety of fluidrestrictors constructed with orifices in series which greatlyreduce the velocity and thereby permit the use of muchlower back pressures (see "Cavitation" page M29).

COMPENSATES FOR VISCOSITYWhen temperature changes affect the viscosity of thehydraulic fluid, this effect usually appears dramatically inthe time response of the hydraulic system. By using theLee Visco Jet, which has a considerable amount ofviscosity compensation built into the design, you will findthat the time responses on hydraulic systems will remainmore constant even though there are wide changes inthe viscosity of the hydraulic fluids.

The curve on page B11 shows the viscosity compensa-tion of the Lee Visco Jet while flowing on MIL-H-5606hydraulic oil. The viscosity was changed by controllingthe oil temperature. Test runs were conducted with boththe standard Lee Jet and a sharp edge orifice for areference. There was no appreciable difference be-tween the standard Lee Jet and the sharp edge orifice.However, there was a dramatic difference in the flowsobtained with the Lee Visco Jet. The pressure drop washeld constant throughout the runs with a ∆P of 50 psi.

This compensation is obtained by two independenteffects which tend to make the flow increase as theviscosity increases. The first effect is that of the backpressure on the spin slots. As previously mentioned, thisvaries as the square of the spin velocity; when the

11

B


12

B

Introduction Lee Restrictorsviscosity increase slows down the spin velocity, theback pressure tends to decrease, thereby permitting ahigher flow through the spin slot into the spin chamber.The other effect occurs in the deceleration chamber. Ifthe liquid is spinning at a high speed when it enters thedeceleration chamber, energy is absorbed to bring thisliquid to rest and subsequently to accelerate it out in theopposite direction. This shows up as a pressure drop. If,due to the increase in viscosity, the liquid is not spinningas fast when it enters the deceleration chamber, it thenfollows that it can be discharged with less pressure drop.

If a relatively flat flow vs. viscosity curve were desired, itcan readily be obtained in the low viscosity ranges, thatis up to 23 centistokes. Referring to the two curves onpage B11 one can see that if a standard Lee Jet and aVisco Jet were flowing in parallel, the two slopes wouldbe cancelled out through this viscosity range and thetotal output would be reasonably constant for 1 centis-toke through 23 centistokes. Again referring to the MIL-H-5606 oil, this would be from +72° to over 350°F.

HIGH PRESSURE RESTRICTORSThe Lee Company offers a complete range of highpressure restrictors for system pressures up to 8000 psi.The Lee 5k Jet and High Pressure High Watt Jets aresingle orifice restrictors covering Lohm rates from 1000to 20,000, and 350 to 3000 Lohms, respectively. TheHigh Pressure Bender Jets are multi-orifice restrictorscovering 1900–9500 Lohms, and the High PressureVisco Jets range from 11,200 Lohms to 313,000 Lohms.The High Pressure Visco Jet comes in two sizes, a0.187" diameter and a new smaller 0.125" diameterversion which offers the same performance but with asignificant savings in space.

13

B

Introduction Lee RestrictorsLEE CROThe Lee CRO is a multi-stage restrictor that is con-structed of sheets of stainless steel vacuum bondedtogether into a convenient disc form. The unique shapeof the tortuous path results in a large minimum passageof 0.055". The Lee CRO does not require screens andhas bidirectional flow capability.

INTERCHANGEABILITYLee Restrictors provide a high degree of interchangeabil-ity. Lee Jets, Bender Jets and 18-Series Visco Jets allhave the same length to the seating chamfer. If spaceexists to accommodate some variation in overall length,a restrictor in a different range of Lohm rates or with adifferent minimum passage size can be chosen withoutchanging the installation hole. The high pressure HighWatts, Bender Jets and Visco Jets are interchangeablewith each other.

MASTER SETSMaster Sets are convenient sets of interchangeable Leerestrictors calibrated to tight test tolerances for use inhydraulic design evaluations. There are four differentmaster sets available: the Lee Jet Master Set, the HighWatt Jet Master Set, the Visco Jet Master Set and theMicrojet Master Set.

Master sets contain a wide range of calibrated restrictorsin individually marked vials along with installation andextraction tool sets and procedures and extra pins or o-rings. The Lee Jet, High Watt Jet and Visco Jet MasterSets also include two each of Lee "B" and "C" unions forline mount applications.

Lee Jet, High Watt Jet and Visco Jet Master Sets arebidirectionally calibrated and marked with the actualLohm rate (±1% for Jet and High Watts, ±5% for ViscoJets). Lee Micro Jet Master Sets are calibratedunidirectionally (±2%) and supplied with actual Lohmrates on a data sheet. All Lee restrictors are readilyinstalled and removed from hydraulic manifolds.

14

B

Introduction Lee RestrictorsMASTER SET

AVAILABLE LOHM RATES

LEE JET LEE MICROJET HIGH WATT JET VISCO JETMASTER SET MASTER SET MASTER SET MASTER SET

PART NUMBER: PART NUMBER: PART NUMBER: PART NUMBER:JETA1871000A JEMA2711000B JEHA1871000A VDCA1871000A

800 475 200 11 200950 515 225 17 600

1 200 555 250 24 0001 500 600 275 33 0001 800 650 300 40 0002 200 700 325 50 0003 000 760 350 60 0004 000 820 400 70 0005 000 885 450 80 0006 500 955 500 100 0008 000 1040 600 125 000

10 000 1120 700 145 00015 000 1210 800 198 00020 000 1310 900 243 00030 000 1420 1000 313 000

1530165017901930209022602450264028603100

15

B

MIN

IMU

M P

AS

SA

GE

SIZ

E (

Inc

he

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HM R

ATE

LEE

JET,

HIG

HWAT

TBE

NDER

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NG12

& 1

8 SE

RIES

LEE

43 S

ERIE

S68

SER

IES

14 S

ERIE

SLE

ERA

NGE

& K

ILOW

ATT

JET

JET

AXIA

L VI

SCO

AXIA

L VI

SCO

VISC

OSJE

VAVI

SCO

VISC

OVI

SCO

CRO

90–

0.09

220

00.

062

200

–0.

063

600

0.03

660

0–

0.03

61

000

0.02

651

000

–0.

0265

0.05

00.

060

190

00.

020

0.04

50.

050

190

0–

0.02

00.

030

0.04

50.

050

370

00.

014

0.02

00.

035

0.04

03

700

–0.

015

0.02

00.

035

0.03

57

400

0.01

00.

015

0.02

00.

025

–0.

026

0.03

1–

0.05

5–

750

0–

0.01

00.

025

1100

00.

0083

0.01

50.

020

0.02

0–

0.01

9–

0.03

20.

055

–11

000

–0.

0085

0.01

517

600

0.00

670.

010

1760

0–

0.00

6730

000

0.00

5130

200

–0.

0051

*46

800

0.00

41*

4910

0–

0.00

41*

130

000

0.00

25*

137

000

–0.

0025

*31

300

00.

0016

*95

000

0–

0.00

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220

000

00.

0006

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alen

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ts a

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d fo

r th

ese

Lohm

rat

es

Introduction Lee Restrictors– –

0.05

5

0.05

5

– – – – – – –

– – – – – –

0.01

5

0.01

5

0.01

5

–

0.00

5

– – –

0.06

2

–

0.03

2

0.03

2

– – – –

– – – – – – – – – – –

– – – –

0.02

6

0.01

9

0.01

3

0.01

3

0.00

9

0.00

6

–

– –

0.06

0

– – – – – –

– – – – – – – – – –

– – – – – – – – –

– – – – –

0.01

0

0.01

0

0.00

7

0.00

5

–

16

B

Note: See pages B18 – B19 for a complete listof Lohm rates and part numbers.

Lee Jet

PIN INSERT

MATERIALS

PART MATERIAL SPECIFICATION

Body 303 Cres QQ-S-763C

Pin 303 Cres QQ-S-763C

Screens 304L Cres ASTM A 666

Base Washer 304L Cres ASTM A 666

Braze — AMS 4774

Finish: All Cres Parts Passivated per QQ-P-35.Pins are prewaxed. Do not degrease. Do not lubricate.

CAD300

17

B

Lee Jet

PERFORMANCE

Lohm Rate Tolerance ............................. ±2% or ±5%

Maximum Working Pressure ................... 3000 psid

Nominal Weight ....................................... 1.2 grams

INSTALLATION AND EXTRACTION

Tool Set Part Number .......................... CUTA1870104C

Procedures ........................................... See Pages L21 – L25

Line Mount Configurations ................... See Pages J6 – J8

Replacement Pin Part Number ............ JETA1870003A

Master Set Part Number ...................... JETA1871000A

Master Set Description ......................... See Pages B13 – B14

For boss size see page L19. For oversize see page L23.

INSTALLATION HOLE

18

B

Lee Jet

LEE PART NUMBER NOMINALLOHM SCREEN HOLE

±2% ±5% RATE SIZE (Inches)

JETA1872800L JETA1875800L 800 0.015

JETA1872850L JETA1875850L 850 0.015

JETA1872900L JETA1875900L 900 0.015

JETA1872950L JETA1875950L 950 0.015

JETA1872100D JETA1875100D 1 000 0.008

JETA1872110D JETA1875110D 1 100 0.008

JETA1872120D JETA1875120D 1 200 0.008

JETA1872130D JETA1875130D 1 300 0.008

JETA1872140D JETA1875140D 1 400 0.008

JETA1872150D JETA1875150D 1 500 0.008

JETA1872160D JETA1875160D 1 600 0.008

JETA1872170D JETA1875170D 1 700 0.008

JETA1872180D JETA1875180D 1 800 0.008

JETA1872190D JETA1875190D 1 900 0.008

JETA1872200D JETA1875200D 2 000 0.008

JETA1872220D JETA1875220D 2 200 0.008

JETA1872240D JETA1875240D 2 400 0.008

JETA1872260D JETA1875260D 2 600 0.008

JETA1872280D JETA1875280D 2 800 0.008

JETA1872300D JETA1875300D 3 000 0.008

JETA1872320D JETA1875320D 3 200 0.008

JETA1872340D JETA1875340D 3 400 0.008

JETA1872360D JETA1875360D 3 600 0.008

JETA1872380D JETA1875380D 3 800 0.008

JETA1872400D JETA1875400D 4 000 0.008

JETA1872430D JETA1875430D 4 300 0.008

JETA1872460D JETA1875460D 4 600 0.008

19

B

Lee Jet



JETA1872500D JETA1875500D 5 000 0.006

JETA1872550D JETA1875550D 5 500 0.006

JETA1872600D JETA1875600D 6 000 0.006

JETA1872650D JETA1875650D 6 500 0.006

JETA1872700D JETA1875700D 7 000 0.006

JETA1872750D JETA1875750D 7 500 0.006

JETA1872800D JETA1875800D 8 000 0.006

JETA1872850D JETA1875850D 8 500 0.006

JETA1872900D JETA1875900D 9 000 0.006

JETA1872950D JETA1875950D 9 500 0.006

JETA1872100H JETA1875100H 10 000 0.006

JETA1872110H JETA1875110H 11 000 0.004

JETA1872120H JETA1875120H 12 000 0.004

JETA1872130H JETA1875130H 13 000 0.004

JETA1872140H JETA1875140H 14 000 0.004

JETA1872150H JETA1875150H 15 000 0.004

JETA1872160H JETA1875160H 16 000 0.004

JETA1872170H JETA1875170H 17 000 0.004

JETA1872180H JETA1875180H 18 000 0.004

JETA1872190H JETA1875190H 19 000 0.004

JETA1872200H JETA1875200H 20 000 0.004

JETA1872220H JETA1875220H 22 000 0.004

JETA1872240H JETA1875240H 24 000 0.004

JETA1872260H JETA1875260H 26 000 0.004

JETA1872280H JETA1875280H 28 000 0.004

JETA1872300H JETA1875300H 30 000 0.004

20

B


Pin 17-4PH Cres AMS 5643

Screens 303 Cres QQ-S-763C

Metering Element 304 Cres QQ-S-763

MATERIALS


Lee High Watt Jet

PERFORMANCE




PIN INSERT


CAD305

21

B

Lee High Watt JetINSTALLATION HOLE

INSTALLATION AND EXTRACTIONTool Set Part Number .......................... CUTA1870110CProcedures ........................................... See Pages L21 – L25Line Mount Configurations ................... See Pages J6 – J8Replacement Pin Part Number ............ JEHA1870003AMaster Set Part Number ...................... JEHA1871000AMaster Set Description ......................... See Pages B13 – B14



±2% ±5% RATE SIZE (Inches)JEHA1872200L JEHA1875200L 200 0.030JEHA1872225L JEHA1875225L 225 0.030JEHA1872250L JEHA1875250L 250 0.030JEHA1872275L JEHA1875275L 275 0.030JEHA1872300L JEHA1875300L 300 0.030JEHA1872325L JEHA1875325L 325 0.030JEHA1872350L JEHA1875350L 350 0.024JEHA1872375L JEHA1875375L 375 0.024JEHA1872400L JEHA1875400L 400 0.024JEHA1872425L JEHA1875425L 425 0.024JEHA1872450L JEHA1875450L 450 0.024JEHA1872475L JEHA1875475L 475 0.024JEHA1872500L JEHA1875500L 500 0.024JEHA1872550L JEHA1875550L 550 0.020JEHA1872600L JEHA1875600L 600 0.020JEHA1872650L JEHA1875650L 650 0.020JEHA1872700L JEHA1875700L 700 0.020JEHA1872750L JEHA1875750L 750 0.020JEHA1872800L JEHA1875800L 800 0.015JEHA1872850L JEHA1875850L 850 0.015JEHA1872900L JEHA1875900L 900 0.015JEHA1872950L JEHA1875950L 950 0.015JEHA1872100D JEHA1875100D 1000 0.015

22

B

281 Kilowatt Jet

PERFORMANCE

Lohm Rate Tolerance ......................................... ±5%

Maximum Working Pressure ............................... 3000 psid

Nominal Weight ................................................... 4.0 grams

PIN INSERT

HEATTREAT

MATERIALS


Body 304L Cres QQ-S-763 —

Pin 15-5PH Cres AMS 5659 H1025

Orifice Plate 15-5PH Cres AMS 5659 H1025

Screens 15-5PH Cres AMS 5659 H1025


CAD340

23

B

281 Kilowatt JetINSTALLATION HOLE





Replacement Pin Part Number ............ JEKA2810003B


LOHM NOMINALLEE RATE SCREEN HOLE

PART NUMBER ±5% SIZE (Inches)

JEKA2815090L 90 0.040

JEKA2815110L 110 0.040

JEKA2815130L 130 0.040

JEKA2815150L 150 0.040

JEKA2815175L 175 0.040

JEKA2815200L 200 0.040

24

B

MATERIALS



Screen Assembly 304L Cres ASTM A 666

Braze — AMS 4774

O-Ring Fluorosilicone —

INSERT

PERFORMANCE

Lohm Rate Tolerance ......................................... ±2%

Maximum Working Pressure ............................... 500 psid

Nominal Weight ................................................... 0.44 grams

Finish: All Cres Parts Passivated per QQ-P-35.

Lee MicrojetCAD365

25

B

INSTALLATION HOLE



Procedures ........................................... See Page L32

Replacement O-Ring Part Number ...... JEMA2710003B

Master Set Part Number ...................... JEMA2711000B

Master Set Description ......................... See Pages B13 – B14

Lee Microjet

26

BLOHM NOMINAL

LEE RATE SCREEN HOLEPART NUMBER ± 2% SIZE (Inches)

JEMA2712475L 475 0.015

JEMA2712495L 495 0.015

JEMA2712515L 515 0.015

JEMA2712535L 535 0.015

JEMA2712555L 555 0.015

JEMA2712575L 575 0.015

JEMA2712600L 600 0.015

JEMA2712625L 625 0.015

JEMA2712650L 650 0.015

JEMA2712675L 675 0.015

JEMA2712700L 700 0.015

JEMA2712730L 730 0.015

JEMA2712760L 760 0.015

JEMA2712790L 790 0.015

JEMA2712820L 820 0.015

JEMA2712850L 850 0.015

JEMA2712885L 885 0.015

JEMA2712920L 920 0.015

JEMA2712955L 955 0.015

JEMA2712995L 995 0.008

JEMA2712104D 1040 0.008

JEMA2712108D 1080 0.008

JEMA2712112D 1120 0.008

JEMA2712117D 1170 0.008

Lee Microjet

27

BLOHM NOMINAL

LEE RATE SCREEN HOLEPART NUMBER ± 2% SIZE (Inches)

JEMA2712121D 1210 0.008

JEMA2712126D 1260 0.008

JEMA2712131D 1310 0.008

JEMA2712136D 1360 0.008

JEMA2712142D 1420 0.008

JEMA2712147D 1470 0.008

JEMA2712153D 1530 0.008

JEMA2712159D 1590 0.008

JEMA2712165D 1650 0.008

JEMA2712172D 1720 0.008

JEMA2712179D 1790 0.008

JEMA2712186D 1860 0.008

JEMA2712193D 1930 0.008

JEMA2712201D 2010 0.008

JEMA2712209D 2090 0.008

JEMA2712218D 2180 0.008

JEMA2712226D 2260 0.008

JEMA2712235D 2350 0.008

JEMA2712245D 2450 0.008

JEMA2712254D 2540 0.008

JEMA2712264D 2640 0.008

JEMA2712275D 2750 0.008

JEMA2712286D 2860 0.008

JEMA2712297D 2970 0.008

JEMA2712310D 3100 0.008

Lee Microjet

28

B



Internal Plug 303 Cres QQ-S-763C

Spacers 303 Cres QQ-S-763C

Metering Discs 17-7PH Cres AMS 5529

Drilled Screens 303 Cres QQ-S-763C

Etched Screens 304L Cres ASTM A 666

Base Washers 304L Cres ASTM A 666

Braze — AMS 4774

MATERIALS


PERFORMANCE

Lohm Rate Tolerance ................................. ±5%

Maximum Working Pressure ....................... 3000 psid

Nominal Weight ........................................... 1.4 grams

PIN INSERT


Lee Bender JetCAD308

29

B

LEE LOHM MINIMUM NOMINALPART RATE PASSAGE SCREEN HOLE

NUMBER ±5% SIZE (Inches) SIZE (Inches)

JEBA1875190D 1900 0.030 0.020JEBA1875240D 2400 0.030 0.020JEBA1875330D 3300 0.025 0.015JEBA1875370D 3700 0.020 0.015JEBA1875500D 5000 0.020 0.015JEBA1875590D 5900 0.020 0.015JEBA1875710D 7100 0.015 0.008JEBA1875950D 9500 0.015 0.008





Replacement Pin Part Number ............ JETA1870003A


INSTALLATION HOLE

Lee Bender Jet

30

B





Shims 303 Cres QQ-S-763C

Spinner Discs 17-7PH Cres AMS 5528


MATERIALS


2502Short Axial Visco Jet

PIN INSERT

PERFORMANCE





CAD310

31

B




Line Mount Configurations ................... See Page J13

Replacement Pin Part Number ............ CKFA2500003A



INSTALLATION HOLE

LEE MINIMUM NOMINALPART LOHM PASSAGE SCREEN HOLE

NUMBER RATE SIZE (Inches) SIZE (Inches)

VXCA2502680L 680 0.060 0.031VXCA2502910L 910 0.060 0.031VXCA2502120D 1200 0.050 0.031VXCA2502140D 1400 0.050 0.031VXCA2502190D 1900 0.045 0.031VXCA2502210D 2100 0.040 0.031

32

B

Body 303 Cres QQ-S-763CPin 303 Cres QQ-S-763CStack Retainer 303 Cres QQ-S-763CSpacers 303 Cres QQ-S-763CShims 303 Cres QQ-S-763CSpinner Discs 17-7PH Cres AMS 5528Metering Discs 17-7PH Cres AMS 5529Screens 304L Cres ASTM A 666Base Washer 304L Cres ASTM A 666

Braze — AMS 4774

PERFORMANCE




Axial Visco Jet2500Short

PIN INSERT

MATERIALS



CAD311

33

B


INSTALLATION HOLE





Replacement Pin Part Number ............ VXCA2500003A




VXCA2500270D 2700 0.035 0.015VXCA2500330D 3300 0.035 0.015VXCA2500370D 3700 0.035 0.015VXCA2500450D 4500 0.030 0.015VXCA2500560D 5600 0.025 0.015VXCA2500620D 6200 0.025 0.015VXCA2500740D 7400 0.020 0.015VXCA2500820D 8200 0.020 0.015

34

B

PERFORMANCE




2503Long Axial Visco Jet

PIN INSERT

MATERIALS










CAD312

35

B



VXCA2503112D 1120 0.060 0.031VXCA2503140D 1400 0.060 0.031VXCA2503190D 1900 0.050 0.031VXCA2503270D 2700 0.045 0.031VXCA2503320D 3200 0.040 0.031

Axial Visco Jet2503Long

INSTALLATION HOLE





Replacement Pin Part Number ............ CKFA2500003A


36

B



Stack Retainer 303 Cres QQ-S-763C







Braze — AMS 4774

2501Long Axial Visco Jet

PIN INSERT

MATERIALS



PERFORMANCE




CAD313

37

B

Axial Visco Jet2501Long

INSTALLATION HOLE



VXCA2501480D 4 800 0.035 0.015VXCA2501620D 6 200 0.030 0.015VXCA2501740D 7 400 0.025 0.015VXCA2501840D 8 400 0.025 0.015VXCA2501980D 9 800 0.020 0.015VXCA2501110H 11 000 0.020 0.015





Replacement Pin Part Number ............ VXCA2500003A


38

B

Body 304L Cres QQ-S-763


Visco Stack 304L Cres ASTM A 666



Braze — AMS 4774

PERFORMANCE

Lohm Rate Tolerance ........................... ±5% or ±10%

Maximum Working Pressure ................. 3000 psid

Nominal Weight ..................................... 1.7 grams

Note: See pages B40 – B41 for a complete listof Lohm rates and part numbers.

PIN INSERT

MATERIALS



Lee JEVACAD320

39

B





Replacement Pin Part Number ............ JEVA1870003B


INSTALLATION HOLE

DISC INFORMATION NOMINAL SCREEN DATA

TOTAL OPEN SCREENDISC MINIMUM AREA AREA HOLE

STYLE PASSAGE (Square (Square SIZE(Inches) Inches) Inches) (Inches)

JEVA181 0.006 0.062 0.019 0.004JEVA182 0.009 0.062 0.020 0.006JEVA183 0.013 0.062 0.014 0.008JEVA184 0.019 0.062 0.026 0.015JEVA185 0.026 0.062 0.026 0.015

Lee JEVA

40

B

LEE PART NUMBER MINIMUMLOHM PASSAGE


JEVA1855352D JEVA1850352D 3 520 0.026JEVA1855370D JEVA1850370D 3 700 0.026JEVA1855389D JEVA1850389D 3 890 0.026JEVA1855408D JEVA1850408D 4 080 0.026JEVA1855428D JEVA1850428D 4 280 0.026JEVA1855450D JEVA1850450D 4 500 0.026JEVA1855472D JEVA1850472D 4 720 0.026JEVA1855496D JEVA1850496D 4 960 0.026JEVA1855521D JEVA1850521D 5 210 0.026JEVA1855547D JEVA1850547D 5 470 0.026JEVA1855574D JEVA1850574D 5 740 0.026JEVA1855603D JEVA1850603D 6 030 0.026JEVA1855633D JEVA1850633D 6 330 0.026JEVA1855665D JEVA1850665D 6 650 0.026JEVA1855698D JEVA1850698D 6 980 0.026JEVA1855733D JEVA1850733D 7 330 0.026JEVA1845769D JEVA1840769D 7 690 0.019JEVA1845808D JEVA1840808D 8 080 0.019JEVA1845848D JEVA1840848D 8 480 0.019JEVA1845890D JEVA1840890D 8 900 0.019JEVA1845935D JEVA1840935D 9 350 0.019JEVA1845982D JEVA1840982D 9 820 0.019JEVA1845103H JEVA1840103H 10 300 0.019JEVA1845108H JEVA1840108H 10 800 0.019JEVA1845114H JEVA1840114H 11 400 0.019JEVA1845119H JEVA1840119H 11 900 0.019JEVA1845125H JEVA1840125H 12 500 0.019JEVA1845132H JEVA1840132H 13 200 0.019JEVA1845138H JEVA1840138H 13 800 0.019JEVA1845145H JEVA1840145H 14 500 0.019JEVA1845152H JEVA1840152H 15 200 0.019JEVA1845160H JEVA1840160H 16 000 0.019JEVA1845168H JEVA1840168H 16 800 0.019JEVA1845176H JEVA1840176H 17 600 0.019JEVA1835185H JEVA1830185H 18 500 0.013JEVA1835194H JEVA1830194H 19 400 0.013JEVA1835204H JEVA1830204H 20 400 0.013JEVA1835214H JEVA1830214H 21 400 0.013JEVA1835225H JEVA1830225H 22 500 0.013JEVA1835236H JEVA1830236H 23 600 0.013JEVA1835248H JEVA1830248H 24 800 0.013JEVA1835260H JEVA1830260H 26 000 0.013JEVA1835273H JEVA1830273H 27 300 0.013JEVA1835287H JEVA1830287H 28 700 0.013JEVA1835302H JEVA1830302H 30 200 0.013JEVA1835316H JEVA1830316H 31 600 0.013JEVA1835332H JEVA1830332H 33 200 0.013

Lee JEVA

41

B



JEVA1835349H JEVA1830349H 34 900 0.013JEVA1835366H JEVA1830366H 36 600 0.013JEVA1835385H JEVA1830385H 38 500 0.013JEVA1835404H JEVA1830404H 40 400 0.013JEVA1835424H JEVA1830424H 42 400 0.013JEVA1835446H JEVA1830446H 44 600 0.013JEVA1835468H JEVA1830468H 46 800 0.013JEVA1825491H JEVA1820491H 49 100 0.009JEVA1825516H JEVA1820516H 51 600 0.009JEVA1825542H JEVA1820542H 54 200 0.009JEVA1825569H JEVA1820569H 56 900 0.009JEVA1825597H JEVA1820597H 59 700 0.009JEVA1825627H JEVA1820627H 62 700 0.009JEVA1825658H JEVA1820658H 65 800 0.009JEVA1825691H JEVA1820691H 69 100 0.009JEVA1825726H JEVA1820726H 72 600 0.009JEVA1825762H JEVA1820762H 76 200 0.009JEVA1825800H JEVA1820800H 80 000 0.009JEVA1825840H JEVA1820840H 84 000 0.009JEVA1825882H JEVA1820882H 88 200 0.009JEVA1825926H JEVA1820926H 92 600 0.009JEVA1825972H JEVA1820972H 97 200 0.009JEVA1825102K JEVA1820102K 102 000 0.009JEVA1825107K JEVA1820107K 107 000 0.009JEVA1825113K JEVA1820113K 113 000 0.009JEVA1825118K JEVA1820118K 118 000 0.009JEVA1825124K JEVA1820124K 124 000 0.009JEVA1825130K JEVA1820130K 130 000 0.009JEVA1815137K JEVA1810137K 137 000 0.006JEVA1815144K JEVA1810144K 144 000 0.006JEVA1815151K JEVA1810151K 151 000 0.006JEVA1815158K JEVA1810158K 158 000 0.006JEVA1815166K JEVA1810166K 166 000 0.006JEVA1815175K JEVA1810175K 175 000 0.006JEVA1815183K JEVA1810183K 183 000 0.006JEVA1815193K JEVA1810193K 193 000 0.006JEVA1815202K JEVA1810202K 202 000 0.006JEVA1815212K JEVA1810212K 212 000 0.006JEVA1815223K JEVA1810223K 223 000 0.006JEVA1815234K JEVA1810234K 234 000 0.006JEVA1815246K JEVA1810246K 246 000 0.006JEVA1815258K JEVA1810258K 258 000 0.006JEVA1815271K JEVA1810271K 271 000 0.006JEVA1815284K JEVA1810284K 284 000 0.006JEVA1815299K JEVA1810299K 299 000 0.006JEVA1815313K JEVA1810313K 313 000 0.006

Lee JEVA

42

B

Body 303 Cres QQ-S-763CPlug 303 Cres QQ-S-763CPin 303 Cres QQ-S-763CInternal Plug 303 Cres QQ-S-763CVisco Stack 304L Cres ASTM A 666Screens 304L Cres ASTM A 666Base Washer 304L Cres ASTM A 666Braze — AMS 4774

18Series Lee Visco Jet

PIN INSERT

MATERIALS


PERFORMANCE






MINIMUM TOTAL OPEN SCREENDISC PASSAGE AREA AREA HOLE

STYLE SIZE (Square (Square SIZE(Inches) Inches) Inches) (Inches)

VDCA181 0.005 0.062 0.019 0.004VDCA182 0.007 0.062 0.019 0.004VDCA183 0.010 0.062 0.020 0.006VDCA184 0.015 0.062 0.014 0.008

CAD "L"322 .66324 .72

43

B

Lee Visco Jet18Series

INSTALLATION HOLE

LEE PART MIN.NUMBER LOHM MINIMUM "L" "A"

RATE PASSAGE DIM. DIM.±5% ±10% SIZE (In.) (In.) (In.)

VDCA1845112H VDCA1840112H 11 200 0.015 0.66 0.30VDCA1845162H VDCA1840162H 16 200 0.015 0.72 0.40VDCA1835176H VDCA1830176H 17 600 0.010 0.66 0.30VDCA1835240H VDCA1830240H 24 000 0.010 0.66 0.30VDCA1835330H VDCA1830330H 33 000 0.010 0.72 0.40VDCA1835410H VDCA1830410H 41 000 0.010 0.72 0.40VDCA1825800H VDCA1820800H 80 000 0.007 0.66 0.30VDCA1815145K VDCA1810145K 145 000 0.005 0.66 0.30VDCA1815198K VDCA1810198K 198 000 0.005 0.66 0.30VDCA1815243K VDCA1810243K 243 000 0.005 0.72 0.40VDCA1815280K VDCA1810280K 280 000 0.005 0.72 0.40VDCA1815313K VDCA1810313K 313 000 0.005 0.72 0.40


Tool Set Part Number ............................ CUTA1870104CProcedures ............................................. See Pages L21 – L25

Line Mount Configurations ..................... See Pages J6 – J8

Replacement Pin Part Number .............. JETA1870003A

Master Set Part Number ........................ VDCA1871000A

Master Set Description ........................... See Pages B13 – B14


44

B


PERFORMANCELohm Rate Tolerance ............................. ±5% or ±10%Maximum Working Pressure ................... 3000 psidNominal Weight ....................................... 5.8 - 7.7 grams

Body 303 Cres QQ-S-763CVisco Stack 304L Cres ASTM A 666Screens 304L Cres ASTM A 666

304L Cres QQ-W-423Braze — AWS A5.8BNi-7Screen Spacers 410 Cres QQ-S-763Spacers 303 Cres QQ-S-763CWashers 303 Cres QQ-S-763CShims 302 Cres ASTM A 666"A" Washer 303 Cres QQ-S-763CBack Up Rings TFE MS28774-011"O" Ring FKM M83248/2-011

MATERIALSPART MATERIAL SPECIFICATION



MINIMUM TOTAL OPEN SCREENDISC PASSAGE AREA AREA HOLE SIZE

STYLE SIZE (Inches) (Square In.) (Square In.) (Inches)VDCA431 0.005 0.043 0.010 0.001VDCA432 0.015 0.070 0.014 0.010VDCA433 0.031 0.070 0.025 0.020

CAD "L"325 .434327 .569329 .630

45

B


INSTALLATION HOLE


Procedures ............................................. See Page L28

Instructions for High andLow Temperature ................................... See Pages L29 – L31

Line Mount Configurations ..................... See Page J15

LEE PART NUMBER MINIMUM "A"LOHM PASSAGE "L" DEPTH

±5% ±10% RATE SIZE DIM. REAM(Inches) (In.) ± 0.002"

VDCA4335500D VDCA4330500D 5 000 0.031 0.569 0.654VDCA4335700D VDCA4330700D 7 000 0.031 0.630 0.715VDCA4325250H VDCA4320250H 25 000 0.015 0.434 0.519VDCA4325326H VDCA4320326H 32 600 0.015 0.434 0.519VDCA4325460H VDCA4320460H 46 000 0.015 0.434 0.519VDCA4325565H VDCA4320565H 56 500 0.015 0.569 0.654VDCA4325650H VDCA4320650H 65 000 0.015 0.569 0.654VDCA4325730H VDCA4320730H 73 000 0.015 0.569 0.654VDCA4315950K VDCA4310950K 950 000 0.005 0.434 0.519VDCA4315135T VDCA4310135T 1 350 000 0.005 0.569 0.654VDCA4315220T VDCA4310220T 2 200 000 0.005 0.569 0.654

46

B


MATERIALS

PART MATERIAL SPECIFICATIONBody 303 Cres QQ-S-763CVisco Stack 304L Cres ASTM A 666Screens 304L Cres ASTM A 666Spacers 303 Cres QQ-S-763CWashers 303 Cres QQ-S-763CShims 302 Cres ASTM A 666"A" Washer 303 Cres QQ-S-763CBack Up Rings TFE MS28774-015"O" Ring FKM M83248/2-015


PERFORMANCELohm Rate Tolerance ............................. ±5% or ±10%Maximum Working Pressure ................... 3000 psidNominal Weight ....................................... 24.7 - 35.8 grams

CAD "L"330 .702332 .920334 1.029




VDCA681 0.032 0.208 0.079 0.020

VDCA682 0.062 No No NoScreens Screens Screens

47

B


INSTALLATION HOLE

LEE PART NUMBER MINIMUM "A"LOHM PASSAGE "L" DEPTH

±5% ±10%RATE SIZE DIM. REAM

(Inches) (In.) ± 0.002"

VDCA6825137D VDCA6820137D 1 370 0.062 0.702 0.797VDCA6825181D VDCA6820181D 1 810 0.062 0.920 1.015VDCA6815880D VDCA6810880D 8 800 0.032 0.702 0.797VDCA6815124H VDCA6810124H 12 400 0.032 0.702 0.797VDCA6815152H VDCA6810152H 15 200 0.032 0.920 1.015VDCA6815176H VDCA6810176H 17 600 0.032 0.920 1.015VDCA6815196H VDCA6810196H 19 600 0.032 1.029 1.124





48

B

Body 304 Cres QQ-S-763

Separators 304 Cres QQ-S-763

End Pieces 304 Cres QQ-S-763

Visco Disc 304L Cres QQ-S-766

Back Up Rings TFE MS28774-016

"O" Ring FKM M83248/2-016

MATERIALS



PERFORMANCE

Lohm Rate Tolerance .................................. ±5%

Maximum Working Pressure ........................ 3000 psid

Nominal Weight ............................................ 64 - 191 grams

Minimum Passage Size ............................... 0.055 inches


CAD "L"335 .281336 .496337 .711338 .926339 1.141

49

B

INSTALLATION HOLE





LEE "L" "A"PART LOHM DIM. DIM.

NUMBER RATE MAX. MIN.±5% (Inches) (Inches)

VDCA1415400D 4000 0.281 0.341

VDCA1415565D 5650 0.496 0.556

VDCA1415693D 6930 0.711 0.771

VDCA1415800D 8000 0.926 0.986

VDCA1415890D 8900 1.141 1.201


50

B

MATERIALS

PART MATERIAL SPECIFICATIONHEAT

TREAT

Lee 5k Jet

PIN INSERT

Body 304L Cres QQ-S-763 —

Pin 15-5PH Cres AMS 5659 H1075

Screen 15-5PH CresAMS 5659

H1025or 5862

Note: See pages B52 – B53 for a complete listof Lohm Rates and Part Numbers.


CAD345

51

B

Lee 5k Jet


Tool Set Part Number ....................... CUTA1870904C

Procedures ........................................ See Pages L21 – L25

Line Mount Configurations ................ See Pages J8, J20 – J31

Replacement Pin Part Number ......... JHTA1870003A


INSTALLATION HOLE

PERFORMANCE

Lohm Rate Tolerance .................................. ±2% or ±5%

Maximum Working Pressure ........................ 5000 psid

Nominal Weight ............................................ 1.1 grams

52

B

Lee 5k Jet



JHTA1872100D JHTA1875100D 1 000 0.008

JHTA1872110D JHTA1875110D 1 100 0.008

JHTA1872120D JHTA1875120D 1 200 0.008

JHTA1872130D JHTA1875130D 1 300 0.008

JHTA1872140D JHTA1875140D 1 400 0.008

JHTA1872150D JHTA1875150D 1 500 0.008

JHTA1872160D JHTA1875160D 1 600 0.008

JHTA1872170D JHTA1875170D 1 700 0.008

JHTA1872180D JHTA1875180D 1 800 0.008

JHTA1872190D JHTA1875190D 1 900 0.008

JHTA1872200D JHTA1875200D 2 000 0.008

JHTA1872220D JHTA1875220D 2 200 0.008

JHTA1872240D JHTA1875240D 2 400 0.008

JHTA1872260D JHTA1875260D 2 600 0.008

JHTA1872280D JHTA1875280D 2 800 0.008

JHTA1872300D JHTA1875300D 3 000 0.008

JHTA1872320D JHTA1875320D 3 200 0.008

JHTA1872340D JHTA1875340D 3 400 0.008

JHTA1872360D JHTA1875360D 3 600 0.008

JHTA1872380D JHTA1875380D 3 800 0.008

JHTA1872400D JHTA1875400D 4 000 0.008

JHTA1872430D JHTA1875430D 4 300 0.008

53

BLEE PART NUMBER NOMINAL

LOHM SCREEN HOLE±2% ±5% RATE SIZE (Inches)

JHTA1872460D JHTA1875460D 4 600 0.008

JHTA1872500D JHTA1875500D 5 000 0.008

JHTA1872550D JHTA1875550D 5 500 0.006

JHTA1872600D JHTA1875600D 6 000 0.006

JHTA1872650D JHTA1875650D 6 500 0.006

JHTA1872700D JHTA1875700D 7 000 0.006

JHTA1872750D JHTA1875750D 7 500 0.006

JHTA1872800D JHTA1875800D 8 000 0.006

JHTA1872850D JHTA1875850D 8 500 0.006

JHTA1872900D JHTA1875900D 9 000 0.006

JHTA1872950D JHTA1875950D 9 500 0.006

JHTA1872100H JHTA1875100H 10 000 0.006

JHTA1872110H JHTA1875110H 11 000 0.004

JHTA1872120H JHTA1875120H 12 000 0.004

JHTA1872130H JHTA1875130H 13 000 0.004

JHTA1872140H JHTA1875140H 14 000 0.004

JHTA1872150H JHTA1875150H 15 000 0.004

JHTA1872160H JHTA1875160H 16 000 0.004

JHTA1872170H JHTA1875170H 17 000 0.004

JHTA1872180H JHTA1875180H 18 000 0.004

JHTA1872190H JHTA1875190H 19 000 0.004

JHTA1872200H JHTA1875200H 20 000 0.004

Lee 5k Jet

54

B

MATERIALS


Note: See pages B56 – B57 for a complete listof Lohm Rates and Part Numbers.

Lee High Watt JetHighPressure

PIN INSERT

Body 304L Cres QQ-S-763


Screens 440C Cres QQ-S-763

Metering Element 304L Cres QQ-S-763


CAD350

55

B


PERFORMANCE

Lohm Rate Tolerance ........................... ±2% or ±5%

Maximum Working Pressure ................. 8000 psid intermittent5000 psid continuous

Nominal Weight ..................................... 2.0 grams

INSTALLATION HOLE


Tool Set Part Number ...................... CUTA1870210C

Procedures ....................................... See Pages L21 – L25

Line Mount Configurations ............... See Pages J8, J20 – J31

Replacement Pin Part Number ........ JHHA1870003A


56

B

LEE PART NUMBER LOHM NOMINALRATE SCREEN HOLE

±2% SIZE (Inches)

JHHA1872350L 350

JHHA1872375L 375JHHA1872400L 400JHHA1872425L 425 0.024JHHA1872450L 450JHHA1872475L 475JHHA1872500L 500JHHA1872550L 550JHHA1872600L 600JHHA1872650L 650 0.020JHHA1872700L 700JHHA1872750L 750JHHA1872800L 800JHHA1872850L 850JHHA1872900L 900 0.015JHHA1872950L 950JHHA1872100D 1000JHHA1872110D 1100JHHA1872120D 1200JHHA1872130D 1300JHHA1872140D 1400JHHA1872150D 1500 0.012JHHA1872160D 1600JHHA1872170D 1700JHHA1872180D 1800JHHA1872190D 1900JHHA1872200D 2000JHHA1872220D 2200JHHA1872240D 2400JHHA1872260D 2600 0.008JHHA1872280D 2800JHHA1872300D 3000

HighPressure Lee High Watt Jet

57

B

LEE PART NUMBER LOHM NOMINALRATE SCREEN HOLE

±5% SIZE (Inches)

JHHA1875350L 350

JHHA1875375L 375JHHA1875400L 400JHHA1875425L 425 0.024JHHA1875450L 450JHHA1875475L 475JHHA1875500L 500JHHA1875550L 550JHHA1875600L 600JHHA1875650L 650 0.020JHHA1875700L 700JHHA1875750L 750JHHA1875800L 800JHHA1875850L 850JHHA1875900L 900 0.015JHHA1875950L 950JHHA1875100D 1000JHHA1875110D 1100JHHA1875120D 1200JHHA1875130D 1300JHHA1875140D 1400JHHA1875150D 1500 0.012JHHA1875160D 1600JHHA1875170D 1700JHHA1875180D 1800JHHA1875190D 1900JHHA1875200D 2000JHHA1875220D 2200JHHA1875240D 2400JHHA1875260D 2600 0.008JHHA1875280D 2800JHHA1875300D 3000


58

B

Body 304L Cres QQ-S-763C


Retainer 17-4PH Cres AMS 5643



Drilled Screens 303 Cres QQ-S-763C

Etched Screens 304L Cres ASTM A 666


Braze — AMS 4774

HighPressure Lee Bender Jet

PIN INSERT

MATERIALS



PERFORMANCE




CAD352

59

B

Lee Bender JetHighPressure


Tool Set Part Number ...................... CUTA1870109C

Procedures ....................................... See Pages L21 – L25

Line Mount Configurations ............... See Pages J8, J20 – J31

Replacement Pin Part Number ........ JHHA1870003A


INSTALLATION HOLE

LEE LOHM MINIMUM NOMINALPART RATE PASSAGE SCREEN HOLE

NUMBER ±5% SIZE (Inches) SIZE (Inches)

JHBA1875190D 1900 0.030 0.020JHBA1875240D 2400 0.030 0.020JHBA1875330D 3300 0.025 0.015JHBA1875370D 3700 0.020 0.015JHBA1875500D 5000 0.020 0.015JHBA1875590D 5900 0.020 0.015JHBA1875710D 7100 0.015 0.008JHBA1875950D 9500 0.015 0.008

60

B

HighPressure 125 Visco Jet

PIN INSERT

PERFORMANCELohm Rate Tolerance ................................. ±5% or ±10%Maximum Working Pressure ....................... 8000 psidNominal Weight ........................................... 1.0 gram

Braze —

MATERIALS


Body 304L Cres QQ-S-763Pin 17-4PH Cres AMS 5643Visco Stack 304L Cres ASTM A 666Screens 304L Cres ASTM A 666Base Washer 304L Cres ASTM A 666

AMS 4774 andAWS A5.8 BNi-7





VHCA121 0.005 0.028 0.009 0.004

VHCA122 0.007 0.028 0.009 0.004VHCA123 0.010 0.028 0.010 0.006VHCA124 0.015 0.028 0.007 0.006

CAD355

61

B

125 Visco JetHighPressure


Tool Set Part Number ......................... CUTA1250306C

Procedures .......................................... See Pages L21 – L25


INSTALLATION HOLE



VHCA1245112H VHCA1240112H 11 200 0.015VHCA1245162H VHCA1240162H 16 200 0.015VHCA1235176H VHCA1230176H 17 600 0.010VHCA1235240H VHCA1230240H 24 000 0.010VHCA1235330H VHCA1230330H 33 000 0.010VHCA1235410H VHCA1230410H 41 000 0.010VHCA1225800H VHCA1220800H 80 000 0.007VHCA1215145K VHCA1210145K 145 000 0.005VHCA1215198K VHCA1210198K 198 000 0.005VHCA1215243K VHCA1210243K 243 000 0.005VHCA1215280K VHCA1210280K 280 000 0.005VHCA1215313K VHCA1210313K 313 000 0.005

62

B

Body 304L Cres QQ-S-763Pin 17-4PH Cres AMS 5643Spacers 303 Cres QQ-S-763CVisco Stack 304L Cres ASTM A 666Retainer 17-4PH Cres AMS 5643Screens 304L Cres ASTM A 666Base Washer 304L Cres ASTM A 666Braze — AMS 4774


PERFORMANCELohm Rate Tolerance ............................. ±5% or ±10%Maximum Working Pressure ................... 8000 psidNominal Weight ....................................... 2.0 grams

PIN INSERT

MATERIALS






VHCA181 0.005 0.062 0.019 0.004VHCA182 0.007 0.062 0.019 0.004VHCA183 0.010 0.062 0.020 0.006VHCA184 0.015 0.062 0.014 0.008

CAD356

63

B



Tool Set Part Number ..................... CUTA1870109CProcedures ...................................... See Pages L21 – L25

Line Mount Configurations .............. See Pages J8, J20 – J31

Replacement Pin Part Number ....... JHHA1870003A


INSTALLATION HOLE



VHCA1845112H VHCA1840112H 11 200 0.015VHCA1845162H VHCA1840162H 16 200 0.015VHCA1835176H VHCA1830176H 17 600 0.010VHCA1835240H VHCA1830240H 24 000 0.010VHCA1835330H VHCA1830330H 33 000 0.010VHCA1835410H VHCA1830410H 41 000 0.010VHCA1825800H VHCA1820800H 80 000 0.007VHCA1815145K VHCA1810145K 145 000 0.005VHCA1815198K VHCA1810198K 198 000 0.005VHCA1815243K VHCA1810243K 243 000 0.005VHCA1815280K VHCA1810280K 280 000 0.005VHCA1815313K VHCA1810313K 313 000 0.005

64

B

Lee CRO

Restrictor 304L Cres ASTM A 666

MATERIALS


MINIMUMLEE LOHM PASSAGE "L" NOMINAL

PART RATE SIZE DIMENSION WEIGHTNUMBER ±5% (Inches) (Inches) (Grams)

CRDA6215825L 825 0.055 0.100 20.5CRDA6215114D 1140 0.055 0.180 40.0CRDA6215134D 1340 0.055 0.260 60.5

PERFORMANCE



CAD360

C

Flow Controls

C❑ Metered Flow in One Direction andNo Flow in the Other

❑ Poppet Lifts to Wide Open Positionwith only 20 psid

❑ Choice of Four Sizes

❑ Wide Lohm Rate Selection

❑ High Pressure Models Available

❑ Constant Flow Regardless of ∆P

❑ Wide Range of Control

Flow Controls 1

C

2TABLE OF CONTENTS

Restrictor Metered flow in one direction,Cheks no flow in the other ........... 3,

Directional Metered flow in one direction,Flow Control free flow in the other

(one-way restrictor) ......... 4, 8

Floserts Pressure compensatedflow control ................... 5, 16

High Pressure Directional flow controlsFlow Controls for up to 8000 psid ............ 20

Introduction Flow Controls

6 – 7

– 15

– 19

– 25

C

FLOW CONTROLSThe Lee Company makes three different types of flowcontrols; a Restrictor Chek, a Directional Flow Controland a Flosert.

The Lee Restrictor Chek provides metered flow in onedirection and no flow (checked) in the opposite direction.

Lee Directional Flow Controls provide metered flow inone direction and free flow in the opposite direction (thisfunction is sometimes called a one-way restrictor).

Lee Floserts (pressure compensated flow control) pro-vide a constant flow over a wide range of differentialpressures.

RESTRICTOR CHEKLee Restrictor Cheks are miniature inserts available inmetered Lohm rates from 1000 – 10,000 Lohms, and arescreened to protect the orifice. Flow through the orificecreates pressure drop across the ball which moves itcompletely away from the seat. This unique designeliminates silting problems which occur whenever arestrictor is used in series with a check valve. LeeRestrictor Cheks maintain large minimum passagewaysfor reliable performance.

Introduction Flow Controls 3

C

Lee Restrictor Cheks are used wherever a meteredLohm rate is needed in one direction and no flow in theother. They are often used in lines that flow duringoperation and trap fluid upstream upon shutdown.

DIRECTIONAL FLOW CONTROLSLee Directional Flow Controls come in four different freeflow Lohm rates to provide the designer with the opti-mum size insert. In addition, there are two sizes of HighPressure Directional Flow Controls. The Lee DirectionalFlow Control utilizes the full pressure drop across therestrictor to lift the moving element completely awayfrom the seat in the free flow direction. Screens, whenrequired provide further protection from contaminationin both flow directions.

Directional Flow controls are ideal for timing applicationswhere metering on the outlet in both flow directions isessential. As shown in the diagram above, the two flowcontrols maintain high back pressure when the actuatoris moving in either direction, thus preventing cavitation.

Introduction Flow Controls4

C

FLOSERTSLee Floserts are pressure compensated flow controlswhich provide a constant flow over a wide range ofpressure drop across the insert.

The Flosert operates by sensing the flow rate in terms ofa differential pressure across a fixed orifice.

A variable metering orifice automatically adjusts to keepthis pressure, and hence the flow rate constant.

Thirteen flow rates from 0.1 to 1.0 GPM in a 0.281 inchdiameter body (model 2), and eight flow rates from 1.5to 5.0 GPM in a 0.500 inch diameter body (model 1) areavailable.

Floserts are useful for controlling the velocity of anactuator under varying loads. They can increase thestiffness of a hydrostatic bearing or limit the maximumflow rate to control the speed of a pump or motor. Morethan one Flosert will ratio flows or synchronize severaljacks regardless of loads.

Introduction Flow Controls 5

C

6 Restrictor Chek

RCRA1870100D • METERED FLOW REVERSE

CAD501

RCFA1870100D • METERED FLOW FORWARD

PIN INSERT


Body 303 Cres QQ-S-763CPin 303 Cres QQ-S-763CCage 303 Cres QQ-S-763CSpring 17-7PH Cres AMS 5678Ball 440C Cres AMS 5630Screen 304L Cres ASTM A 666

Braze — AMS 4774

Finish: All CRES parts passivated per QQ-P-35.Pins are prewaxed. Do not degrease. Do not lubricate.

Metered Lohm Rate Tolerance ................ ±5% or ±10%Max. leakage in checked direction .......... 1 drop/min. at 5 psid

on MIL-H-83282 at 80˚F. 1 drop = 50 µL 1 drop/hr. at 1000 - 3000 psidMaximum Working Pressure ................... 3000 psidCracking Pressure ................................... 2 - 8 psidNominal Weight ....................................... 2.7 grams

PERFORMANCE

C

Restrictor ChekINSTALLATION HOLE

INSTALLATION AND EXTRACTIONPart Number ............................................ CUTA1870104CInstallation/Extraction Procedures .......... See Pages L21 – L25Line Mount Configurations ...................... See Pages J6 – J8Replacement Pin Part Number ............... JETA1870003A


LEE PART NUMBER METERED NOMINALLOHM SCREEN HOLERATE SIZE (Inches)

Metered Flow ForwardRCFA1875100D RCFA1870100D 1 000 0.008RCFA1875150D RCFA1870150D 1 500 0.008RCFA1875200D RCFA1870200D 2 000 0.008RCFA1875250D RCFA1870250D 2 500 0.008RCFA1875300D RCFA1870300D 3 000 0.008RCFA1875400D RCFA1870400D 4 000 0.006RCFA1875500D RCFA1870500D 5 000 0.006RCFA1875600D RCFA1870600D 6 000 0.006RCFA1875800D RCFA1870800D 8 000 0.004RCFA1875100H RCFA1870100H 10 000 0.004

Metered Flow ReverseRCRA1875100D RCRA1870100D 1 000 0.008RCRA1875150D RCRA1870150D 1 500 0.008RCRA1875200D RCRA1870200D 2 000 0.008RCRA1875250D RCRA1870250D 2 500 0.008RCRA1875300D RCRA1870300D 3 000 0.008RCRA1875400D RCRA1870400D 4 000 0.006RCRA1875500D RCRA1870500D 5 000 0.006RCRA1875600D RCRA1870600D 6 000 0.006RCRA1875800D RCRA1870800D 8 000 0.004RCRA1875100H RCRA1870100H 10 000 0.004

±5% ±10%

7

C

8 Flow Control187Directional

CAD380PIN INSERT


Body 303 Cres QQ-S-763CPin 303 Cres QQ-S-763CSpring Seat 303 Cres QQ-S-763COrifice Plate 303 Cres QQ-S-763CShuttle Plate 303 Cres QQ-S-763CSpring 302 Cres AMS 5688Screen 304L Cres ASTM A 666

Braze — AMS 4774


FCRA1870100D • FREE FLOW REVERSE

FCFA1870100D • FREE FLOW FORWARD

Metered Lohm Rate Tolerance ................. ±5% or ±10%Maximum Working Pressure ..................... 3000 psidCracking Pressure .................................... 2 - 8 psidFree Flow Lohm Rate at ≥25 psid ............. 470 Lohms maximumNominal Weight ......................................... 1.3 grams

PERFORMANCE

C


INSTALLATION HOLE

LEE PART NUMBER

±5% ±10%

METERED FREE FLOW NOMINALLOHM LOHM RATE SCREEN HOLERATE (Max.) SIZE (Inches)

INSTALLATION AND EXTRACTIONTool Set Part Number ........................... CUTA1870104CProcedures ............................................ See Pages L21 – L25Line Mount Configurations .................... See Pages J6 – J8Replacement Pin Part Number ............. JETA1870003A


Free Flow ForwardFCFA1875100D FCFA1870100D 1 000 470 0.008FCFA1875150D FCFA1870150D 1 500 470 0.008FCFA1875200D FCFA1870200D 2 000 470 0.008FCFA1875250D FCFA1870250D 2 500 470 0.008FCFA1875300D FCFA1870300D 3 000 470 0.008FCFA1875400D FCFA1870400D 4 000 470 0.008FCFA1875500D FCFA1870500D 5 000 470 0.006FCFA1875600D FCFA1870600D 6 000 470 0.006FCFA1875800D FCFA1870800D 8 000 470 0.004FCFA1875100H FCFA1870100H 10 000 470 0.004FCFA1875120H FCFA1870120H 12 000 470 0.004FCFA1875150H FCFA1870150H 15 000 470 0.004FCFA1875200H FCFA1870200H 20 000 470 0.004

Free Flow ReverseFCRA1875100D FCRA1870100D 1 000 470 0.008FCRA1875150D FCRA1870150D 1 500 470 0.008FCRA1875200D FCRA1870200D 2 000 470 0.008FCRA1875250D FCRA1870250D 2 500 470 0.008FCRA1875300D FCRA1870300D 3 000 470 0.008FCRA1875400D FCRA1870400D 4 000 470 0.008FCRA1875500D FCRA1870500D 5 000 470 0.006FCRA1875600D FCRA1870600D 6 000 470 0.006FCRA1875800D FCRA1870800D 8 000 470 0.004FCRA1875100H FCRA1870100H 10 000 470 0.004FCRA1875120H FCRA1870120H 12 000 470 0.004FCRA1875150H FCRA1870150H 15 000 470 0.004FCRA1875200H FCRA1870200H 20 000 470 0.004

C


CAD385

FCRA2810250L • FREE FLOW REVERSE

FCFA2810250L • FREE FLOW FORWARD


Body 303 Cres QQ-S-763CPin 303 Cres QQ-S-763CSpring Seat 303 Cres QQ-S-763COrifice Plate 303 Cres QQ-S-763CShuttle Plate 303 Cres QQ-S-763CSpring 17-7PH Cres AMS 5678Screen 304L Cres ASTM A 666

Braze — AMS 4774

PIN INSERT


PERFORMANCEMetered Lohm Rate Tolerance ................. ±5% or ±10%Maximum Working Pressure ..................... 3000 psidCracking Pressure .................................... 2 - 8 psidFree Flow Lohm Rate at ≥ 25 psid ............ 175 Lohms maximumNominal Weight ......................................... 4.7 grams

C

INSTALLATION HOLE

Flow Control281Directional 11

LEE PART NUMBER

±5% ±10%

METERED FREE FLOW NOMINALLOHM LOHM RATE SCREEN HOLERATE (Max.) SIZE (Inches)

INSTALLATION AND EXTRACTIONTool Set Part Number ........................... CUTA2810114CProcedures ............................................ See Pages L21 – L25Line Mount Configurations .................... See Pages J9 – J12Replacement Pin Part Number ............. PRFA2810003A


Free Flow ForwardFCFA2815250L FCFA2810250L 250 175 0.008FCFA2815500L FCFA2810500L 500 175 0.008FCFA2815750L FCFA2810750L 750 175 0.008FCFA2815100D FCFA2810100D 1 000 175 0.008FCFA2815150D FCFA2810150D 1 500 175 0.008FCFA2815200D FCFA2810200D 2 000 175 0.008FCFA2815250D FCFA2810250D 2 500 175 0.008FCFA2815300D FCFA2810300D 3 000 175 0.008FCFA2815400D FCFA2810400D 4 000 175 0.008FCFA2815500D FCFA2810500D 5 000 175 0.006FCFA2815600D FCFA2810600D 6 000 175 0.006FCFA2815800D FCFA2810800D 8 000 175 0.004FCFA2815100H FCFA2810100H 10 000 175 0.004

Free Flow Reverse

FCRA2815500L FCRA2810500L 500 175 0.008FCRA2815750L FCRA2810750L 750 175 0.008FCRA2815100D FCRA2810100D 1 000 175 0.008FCRA2815150D FCRA2810150D 1 500 175 0.008FCRA2815200D FCRA2810200D 2 000 175 0.008FCRA2815250D FCRA2810250D 2 500 175 0.008FCRA2815300D FCRA2810300D 3 000 175 0.008FCRA2815400D FCRA2810400D 4 000 175 0.008FCRA2815500D FCRA2810500D 5 000 175 0.006FCRA2815600D FCRA2810600D 6 000 175 0.006FCRA2815800D FCRA2810800D 8 000 175 0.004FCRA2815100H FCRA2810100H 10 000 175 0.004

C

PERFORMANCE


CAD536




Body 304 Cres QQ-S-763Pin 17-4PH Cres AMS 5643Poppet 15-5PH Cres AMS 5659Spring 17-7PH Cres AMS 5678Spring Seat 303 Cres QQ-S-763C


PIN INSERT

Metered Lohm Rate Tolerance ................ ±5%Maximum Working Pressure .................... 3000 psidCracking Pressure ................................... 2 - 8 psidFree Flow Lohm Rate at ≥ 25 psid ........... 24 Lohms maximumNominal Weight ........................................ 10.0 grams

C

INSTALLATION HOLE


Tool Set Part Number ......................... CUTA3750106CProcedures .......................................... See Pages L21 – L25Line Mount Configurations .................. See Pages J46 – J51Replacement Pin Part Number ........... CKFA3750003A



LEE PART NUMBERFREE FLOW FREE FLOWFORWARD REVERSE

FCFA3755070L FCRA3755070L 70 24FCFA3755080L FCRA3755080L 80 24FCFA3755095L FCRA3755095L 95 24FCFA3755110L FCRA3755110L 110 24FCFA3755130L FCRA3755130L 130 24FCFA3755150L FCRA3755150L 150 24FCFA3755175L FCRA3755175L 175 24FCFA3755200L FCRA3755200L 200 24FCFA3755230L FCRA3755230L 230 24FCFA3755260L FCRA3755260L 260 24

METERED FREE FLOWLOHM RATE LOHM RATE

± 5% (Max.)

C

PERFORMANCE


CAD537




PIN INSERT



Metered Lohm Rate Tolerance ................. ±5%Maximum Working Pressure ..................... 3000 psidCracking Pressure .................................... 2 - 8 psidFree Flow Lohm Rate at ≥ 25 psid ............ 12 Lohms maximumNominal Weight ......................................... 20.0 grams

C

FCFA5005040L FCRA5005040L 40 12FCFA5005045L FCRA5005045L 45 12FCFA5005050L FCRA5005050L 50 12FCFA5005055L FCRA5005055L 55 12FCFA5005060L FCRA5005060L 60 12FCFA5005070L FCRA5005070L 70 12FCFA5005080L FCRA5005080L 80 12FCFA5005095L FCRA5005095L 95 12FCFA5005110L FCRA5005110L 110 12FCFA5005130L FCRA5005130L 130 12FCFA5005150L FCRA5005150L 150 12FCFA5005175L FCRA5005175L 175 12FCFA5005200L FCRA5005200L 200 12FCFA5005230L FCRA5005230L 230 12FCFA5005260L FCRA5005260L 260 12



± 5% (Max.)


INSTALLATION HOLE

Tool Set Part Number ........................ CUTA5000106CProcedures ......................................... See Pages L21 – L25Line Mount Configurations ................. See Pages J46 – J51Replacement Pin Part Number .......... CKFA5000003A



C

CAD390

FLFA2812310D • REGULATED FLOW FORWARD

FLRA2812310D • REGULATED FLOW REVERSE



Body 303 Cres QQ-S-763CPin 303 Cres QQ-S-763CPiston 416 Cres QQ-S-763CSpool 440C Cres QQ-S-763Spring 17-7PH Cres AMS 5678Screen 304L Cres ASTM A 666

Braze — AMS 4774

PIN INSERT

Regulated Flow Tolerance ........................... ±10%Nominal Screen Hole Size ........................... 0.015"Maximum Working Pressure ........................ 3000 psidNominal Weight ........................................... 6.4 grams

PERFORMANCE

281 Flosert16

C

17

REGULATED FLOW NOMINALFLOW REGULATION LOHM RATE

MIL-H-83282 RANGE (psi) NON REGULATING(GPM at 80°F) ∆P Min. ∆P Max. FLOW DIRECTION

Regulated Flow ForwardFLFA2812310D 1.0 200 3000 280FLFA2812390L 0.9 175 3000 300FLFA2812380L 0.8 150 3000 340FLFA2812370L 0.7 125 3000 380FLFA2812360L 0.6 100 3000 425FLFA2812350L 0.5 100 3000 485FLFA2812340L 0.4 100 3000 550FLFA2812335L 0.35 100 3000 625FLFA2812330L 0.3 100 3000 680FLFA2812325L 0.25 100 3000 800FLFA2812320L 0.2 100 3000 850FLFA2812315L 0.15 100 3000 1600FLFA2812310L 0.1 100 3000 1900

Regulated Flow ReverseFLRA2812310D 1.0 200 3000 280FLRA2812390L 0.9 175 3000 300FLRA2812380L 0.8 150 3000 340FLRA2812370L 0.7 125 3000 380FLRA2812360L 0.6 100 3000 425FLRA2812350L 0.5 100 3000 485FLRA2812340L 0.4 100 3000 550FLRA2812335L 0.35 100 3000 625FLRA2812330L 0.3 100 3000 680FLRA2812325L 0.25 100 3000 800FLRA2812320L 0.2 100 3000 850FLRA2812315L 0.15 100 3000 1600FLRA2812310L 0.1 100 3000 1900

LEEPART

NUMBER

INSTALLATION HOLE

Tool Set Part Number ....................................... CUTA2810114CProcedures ........................................................ See Pages L21 – L25Line Mount Configurations ................................ See Pages J9 – J12Replacement Pin Part Number ......................... PRFA2810003A



281 Flosert

C

Regulated Flow Tolerance ................... ±10%Maximum Working Pressure ................ 3000 psidNominal Weight .................................... 28 grams

PERFORMANCE


Body 303 Cres QQ-S-763CPin 15-5PH Cres AMS 5659Sleeve 416 Cres QQ-S-763CSpring 17-7PH Cres AMS 5678Piston 440C Cres QQ-S-763

500 Flosert18CAD395


FLFA5001350D • REGULATED FLOW FORWARD

FLRA5001350D • REGULATED FLOW REVERSE

PIN INSERT

C

Regulated Flow ForwardFLFA5001350D 5.0 150 3000 60FLFA5001345D 4.5 125 3000 60FLFA5001340D 4.0 125 3000 65FLFA5001335D 3.5 100 3000 70FLFA5001330D 3.0 100 3000 80FLFA5001325D 2.5 100 3000 95FLFA5001320D 2.0 100 3000 120FLFA5001315D 1.5 100 3000 150

Regulated Flow ReverseFLRA5001350D 5.0 150 3000 60FLRA5001345D 4.5 125 3000 60FLRA5001340D 4.0 125 3000 65FLRA5001335D 3.5 100 3000 70FLRA5001330D 3.0 100 3000 80FLRA5001325D 2.5 100 3000 95FLRA5001320D 2.0 100 3000 120FLRA5001315D 1.5 100 3000 150

REGULATED FLOW NOMINALFLOW REGULATION LOHM RATE

MIL-H-83282 RANGE (psi) NON REGULATING(GPM at 80°F) ∆P Min. ∆P Max. FLOW DIRECTION

LEEPART

NUMBER

INSTALLATION HOLE

500 Flosert

INSTALLATION AND EXTRACTIONTool Set Part Number ........................... CUTA5000116CProcedures ............................................ See Pages L21 – L25Replacement Pin Part Number ............. CKFA5000003A


19

C

FHRA3755070L • FREE FLOW REVERSE

PERFORMANCE

20 375 Flow ControlHighPressure

CAD547




PIN INSERT

FHFA3755070L • FREE FLOW FORWARD

Metered Lohm Rate Tolerance ............... ±5%Maximum Working Pressure ................... 8000 psidCracking Pressure .................................. 2 - 8 psidFree Flow Lohm Rate at ≥ 25 psid .......... 27 Lohms maximumNominal Weight ....................................... 13 grams

C

FHFA3755070L FHRA3755070L 70 27FHFA3755080L FHRA3755080L 80 27FHFA3755095L FHRA3755095L 95 27FHFA3755110L FHRA3755110L 110 27FHFA3755130L FHRA3755130L 130 27FHFA3755150L FHRA3755150L 150 27FHFA3755175L FHRA3755175L 175 27FHFA3755200L FHRA3755200L 200 27FHFA3755230L FHRA3755230L 230 27FHFA3755260L FHRA3755260L 260 27



± 5% (Max.)

INSTALLATION HOLE

21375 Flow ControlHighPressure

Tool Set Part Number .......................... CUTA3750106CProcedures ........................................... See Pages L21 – L25Line Mount Configurations ................... See Page J46 – J47Replacement Pin Part Number ............ PHRA3750003A



C

PERFORMANCE


Body 304 Cres QQ-S-763Pin 17-4PH Cres AMS 5643Poppet 15-5PH Cres AMS 5659Spring 17-7PH Cres AMS 5678Spring Seat 304 Cres QQ-S-763Orifice Plate 17-4PH Cres AMS 5643Screen 15-5PH Cres AMS 5659

FREE FLOW REVERSE

FREE FLOW FORWARD


22 375 Flow ControlHigh PressureScreened

CAD547PIN INSERT

Metered Lohm Rate Tolerance ................ ±5%Maximum Working Pressure .................... 5000 psidCracking Pressure ................................... 2 - 8 psidFree Flow Lohm Rate at ≥ 25 psid ........... 28 Lohms maximumNominal Weight ........................................ 13 grams

C


METERED FREE FLOW NOMINALLOHM LOHM RATE SCREEN HOLE

RATE ±5% (Max.) SIZE (Inches)

FHFA3755300L FHRA3755300L 300 28 0.024FHFA3755400L FHRA3755400L 400 28 0.024FHFA3755500L FHRA3755500L 500 28 0.024FHFA3755600L FHRA3755600L 600 28 0.020FHFA3755700L FHRA3755700L 700 28 0.020FHFA3755800L FHRA3755800L 800 28 0.015FHFA3755900L FHRA3755900L 900 28 0.015FHFA3755100D FHRA3755100D 1000 28 0.015FHFA3755120D FHRA3755120D 1200 28 0.012FHFA3755140D FHRA3755140D 1400 28 0.012FHFA3755160D FHRA3755160D 1600 28 0.012FHFA3755180D FHRA3755180D 1800 28 0.012FHFA3755200D FHRA3755200D 2000 28 0.012FHFA3755240D FHRA3755240D 2400 28 0.008FHFA3755280D FHRA3755280D 2800 28 0.008FHFA3755320D FHRA3755320D 3200 28 0.008


Tool Set Part Number .......................... CUTA3750106CProcedures ........................................... See Pages L21 – L25Replacement Pin Part Number ............ PHRA3750003A


INSTALLATION HOLE

23375 Flow ControlHigh PressureScreened

C

FHRA5005040L • FREE FLOW REVERSE

PERFORMANCE




FHFA5005040L • FREE FLOW FORWARD

24CAD548

HighPressure 500 Flow Control

PIN INSERT

Metered Lohm Rate Tolerance ................. ±5%Maximum Working Pressure ..................... 8000 psidCracking Pressure .................................... 2 - 8 psidFree Flow Lohm Rate at ≥ 25 psid ............ 15 Lohms maximumNominal Weight ......................................... 29 grams

C

FHFA5005040L FHRA5005040L 40 15FHFA5005045L FHRA5005045L 45 15FHFA5005050L FHRA5005050L 50 15FHFA5005055L FHRA5005055L 55 15FHFA5005060L FHRA5005060L 60 15FHFA5005070L FHRA5005070L 70 15FHFA5005080L FHRA5005080L 80 15FHFA5005095L FHRA5005095L 95 15FHFA5005110L FHRA5005110L 110 15FHFA5005130L FHRA5005130L 130 15FHFA5005150L FHRA5005150L 150 15FHFA5005175L FHRA5005175L 175 15FHFA5005200L FHRA5005200L 200 15FHFA5005230L FHRA5005230L 230 15FHFA5005260L FHRA5005260L 260 15



± 5% (Max.)

Tool Set Part Number .......................... CUTA5000206CProcedures ........................................... See Pages L21 – L25Line Mount Configurations ................... See Page J46 – J47Replacement Pin Part Number ............ CHFA5000003A



25500 Flow ControlHighPressure

INSTALLATION HOLE

D

Nozzles

1

D❑ Hollow-cone, Pressure-atomized Spray

❑ Miniaturized, Economical, Field-proven

❑ All Stainless Steel Construction

❑ Extractable, Reusable

❑ Safety Screen Protection

❑ Accurate, Solid Stream, Lubricating Jet

❑ Tested for Flow and Target-Hitting Ability

❑ Available in Unidirectional orBidirectional Flow

❑ Lube Oil, Cooling Oil, Fuel Applications

❑ Safety Screen Protection Available

Nozzles

2

D

TABLE OF CONTENTS

Lee Spin Provides hollow coneJet pressure-atomized spray .... 4-5

Lee Accurately directsLubrication liquid to targetJet location ............................. 6-17

MINIATURE PRECISION NOZZLES

The Lee Company offers two types of miniature preci-sion nozzles: the Spin Jet and the Lubrication Jet. Bothtypes are constructed entirely from stainless steel forcompatibility with most industrial and aerospace liquids.Both incorporate the unique installation and retentionprinciple used in the already proven and qualified Leevalves and restrictors. Their small size and light weightmake them extremely cost effective.

All Lee nozzles can be installed in any attitude; yousimply install the insert in a reamed hole, and lock andseal it by pressing the pin in the insert. This easyinstallation eliminates costly assemblies, seals, andthreads, yet the nozzles can be readily removed when-ever necessary. Lee nozzles are the most compact,economical, and reliable nozzles available anywhere.

LEE SPIN JETS

Lee Spin Jets utilize unique vortices and flow passagesto provide a finely atomized hollow cone spray pattern.When used with most normal fuels, Spin Jets produce

Introduction Nozzles

3

D

a 70° cone angle spray with differential pressure in the50-200 psi range. With liquids having surface tension inthe 0.002-0.005 lb./ft. range, the droplet size is typicallyless than 150 µm. Four convenient part numbers, span-ning the range from 6000 to 18,000 Lohms, are avail-able, each with a safety screen to protect against rogueparticles. The recommended maximum service tem-perature is 700°F (371°C), and for continuous service is400°F (204°C).

The recommended maximum temperature for using Lee Lubri-cation Jets containing integral safety screens is 700°F (371°C)short term, and 400°F (204°C) for continuous service.

LEE LUBRICATION JETS

Lee Lubrication Jets generate a straight, well-definedstream of fluid to a predetermined target with differen-tial pressures of 10 to 200 psid. These units are ideal fordirecting streams of lubricating oil at critical bearings, orcooling oil at meshing gears, or fuel at the inside ofvaporizing tubes in aircraft combustion chambers.

A total of 43 different standard units are available andare summarized in the following table:

Introduction Nozzles

SCREENED UNSCREENEDLUBRICATION LUBRICATION

JETS JETS

Body Diameter 0.187" 0.125", 0.187", 0.250", 0.343"

Lohm Rate 500 - 700 200 - 2250Lohm Rate Tolerance ±10% ± 15%

Flow DirectionForward or

BidirectionalReverse

Max. Working Pressure 3000 psid 1500 psid

Extraction Threads Yes No

Installation Hole0.0005" 0.0025"Tolerance

4

D

Body 303 Cres QQ-S-763CPin 303 Cres QQ-S-763CSpin Insert 303 Cres QQ-S-763CScreen 304L Cres ASTM A 666Base Washer 304L Cres ASTM A 666

Braze — AWS A5.8 BNi-7



Lohm Rate Tolerance ............................................ ± 10%Differential Pressure (Recommended) ................... 50-200 psidMaximum Working Pressure .................................. 200 psidSpray Cone Angle (Nominal) ................................. 70°Nominal Weight ...................................................... 1.2 grams

PERFORMANCE

PIN INSERT

Lee Spin JetCAD400

5

D

INSTALLATION HOLE

NZSA1801600D 6 000 0.012 0.008 10

NZSA1801900D 9 000 0.010 0.008 7

NZSA1801120H 12 000 0.008 0.006 5

NZSA1801180H 18 000 0.009 0.006 3.5

REF.NOMINAL FLOW RATE

LEE MIN. SCREEN MIL-C-7024PART LOHM PASSAGE HOLE TYPE II @

NUMBER RATE SIZE DIA. 50 psid & 80°F(Inches) (Inches) (pph)

Tool Set Part Number ..................................... CUTA1870104C

Procedures ...................................................... See Page L21-L25

Replacement Pin Part Number ....................... JETA1870003A



Lee Spin Jet

6

D

Body 303 Cres QQ-S-763CPin 17-4PH Cres AMS 5643Screen 304L Cres ASTM A 666Base Washer 304L Cres ASTM A 666

Braze — AMS 4774


PIN INSERT


Lohm Rate Tolerance ............................................ ±10%Differential Pressure (Recommended) ................... 10-200 psidFlow to hit 0.25" diameter target at 2" distance ..... 90%Nominal Weight ...................................................... 1.2 grams

PERFORMANCE

Lubrication JetReverseScreened

CAD415

7

D

INSTALLATION HOLE

NOMINAL REF. FLOW RATELEE LOHM SCREEN MIL-L-7808 @

PART RATE HOLE DIA. 25 psid &NUMBER ±10% (Inches) 200°F (pph)

JELA1803550L 550 0.015 80JELA1803750L 750 0.015 60JELA1803100D 1000 0.008 45JELA1803130D 1300 0.008 35JELA1803160D 1600 0.008 30JELA1803200D 2000 0.008 25

Tool Set Part Number ............................... CUTA1870104C

Procedures ................................................ See Page L21-L25

Replacement Pin Part Number ................. JETA1870003A



Lubrication JetReverseScreened

8

D

PIN INSERT

Lohm Rate Tolerance ............................................ ±10%Differential Pressure (Recommended) ................... 10-200 psidFlow to hit 0.25" diameter target at 2" distance ..... 90%Nominal Weight ...................................................... 1.2 grams

PERFORMANCE

Body 303 Cres QQ-S-763CPin 303 Cres QQ-S-763CScreen 304L Cres ASTM A 666Base Washer 304L Cres ASTM A 666

Braze — AMS 4774


ForwardScreened Lubrication Jet

CAD425

9

D

INSTALLATION HOLE

NOMINAL REF. FLOW RATELEE LOHM SCREEN MIL-L-7808 @

PART RATE HOLE DIA. 25 psid &NUMBER ±10% (Inches) 200°F (pph)

JELA1801500L 500 0.015 85JELA1801900L 900 0.015 50JELA1801150D 1500 0.008 30JELA1801250D 2500 0.008 18JELA1801450D 4500 0.008 10JELA1801750D 7500 0.006 6

Tool Set Part Number ................................ CUTA1870104C

Procedures ................................................. See Page L21-L25

Replacement Pin Part Number .................. JETA1870003A



Lubrication JetForwardScreened

10

D

PIN INSERT

Lohm Rate Tolerance ............................................ ±15%Differential Pressure (Recommended) ................... 10-200 psiMaximum Working Pressure .................................. 1500 psidFlow to hit 0.25" diameter target at 2" distance ..... 90%Nominal Weight ...................................................... 0.18 grams

PERFORMANCE

Body 15-5PH Cres AMS 5659Pin 15-5PH Cres AMS 5659



Lubrication Jet125Unscreened

CAD430

11

D

INSTALLATION HOLE

LEE LOHM REFERENCEPART RATE ORIFICE DIAMETER

NUMBER ±15% (Inches)

JELA1210105D 1050 0.029JELA1210135D 1350 0.025JELA1210175D 1750 0.022JELA1210225D 2250 0.019


Tool Set Part Number ............................ CUTA1250801C

Procedures ............................................. See Pages L21 – L23



12

D

PIN INSERT


PERFORMANCE





CAD431

13

D

INSTALLATION HOLE


NUMBER ± 15% (Inches)

JELA1810450L 450 0.045JELA1810600L 600 0.039JELA1810800L 800 0.034JELA1810105D 1050 0.029JELA1810135D 1350 0.025JELA1810175D 1750 0.022JELA1810225D 2250 0.019


Tool Set Part Number ............................. CUTA1870801C

Procedures .............................................. See Pages L21 – L23



14

D

PIN INSERT


PERFORMANCE




250Unscreened Lubrication Jet

CAD432

15

D

INSTALLATION HOLE



JELA2510200L 200 0.070JELA2510250L 250 0.060JELA2510350L 350 0.051JELA2510450L 450 0.045JELA2510600L 600 0.039JELA2510800L 800 0.034JELA2510105D 1050 0.029JELA2510135D 1350 0.025JELA2510175D 1750 0.022JELA2510225D 2250 0.019






16

D

PIN INSERT


PERFORMANCE





CAD433

17

D

INSTALLATION HOLE



JELA3410200L 200 0.070JELA3410250L 250 0.060JELA3410350L 350 0.051JELA3410450L 450 0.045JELA3410600L 600 0.039JELA3410800L 800 0.034JELA3410105D 1050 0.029JELA3410135D 1350 0.025JELA3410175D 1750 0.022JELA3410225D 2250 0.019


Tool Set Part Number ......................... CUTA3430801C

Procedures .......................................... See Pages L21 – L23



E

Lee Cheks

1

E

❑ Large Choice of Sizes

❑ Available in Forward orReverse Flow

❑ Available as Side Exit

❑ Sharp Edge MetalSeat EliminatesContamination Problems

❑ Zero Leak Version Available

❑ Low Cracking Pressure

❑ No Valve Noise or Wear

❑ Available with Screens

❑ Pilot Operated Version

Lee Cheks

2

E

TABLE OF CONTENTS

Lee 0.187 & 0.250 inch diameterCheks ball-type check valves ............ 6 – 13

0.187 & 0.343 inch diameterside exit check valves .......... 14 – 19

0.187 inch diameter zero leakpoppet-style check valves .... 20 – 25

Lo-Lohm 0.187, 0.250, 0.375 & 0.500 inchCheks diameter poppet-style

check valves......................... 26 – 37

Hi-Q 0.50, 0.75, 1.00 inch diameterCheks poppet-style check valves .... 38 – 45

High 0.125, 0.187, 0.250, 0.375Pressure & 0.500 inch diameter poppet-styleCheks high pressure check valves

for 8,000 psi systems ........... 46 – 63

Pilot 0.250 inch diameterOperated pilot operatedCheks check valves......................... 64 – 65

Introduction Lee Cheks

3

E

Lee Cheks are the smallest insert check valves availableanywhere in the world. One model is only an eighth of aninch in diameter and slightly over a half inch long. Withalmost one million successfully in service, some for overtwenty years, Lee Cheks have proven reliability. EveryChek is 100% performance tested before delivery.Lee Cheks set the standard for size, weight, anddependability.

THE LEE CHEKThe Lee Chek is offered in three basic configurations:

A 0.187 and a 0.250 inch diameter axial flow ball-typedesigned for 3,000 psi systems and available screenedand unscreened, forward and reverse flowing.

A 0.187 and a 0.343 inch diameter with convenient sideexit porting and enhanced silt resistance. The 0.187 inchdiameter is available screened and unscreened, withforward flow only for 4,000 psi systems. The 0.343 inchdiameter is available unscreened, with reverse flow onlyfor 5000 psi systems.

And a 0.187 inch diameter Zero Leak, poppet-style,axial flow design with a choice of three different elas-tomers. Available screened and unscreened, forwardand reverse flowing for 3000 psi systems.


4

E

LO-LOHM CHEKSLee Lo-Lohm Cheks are poppet-style, high flow-gaincheck valves that are wide open at 15 psid and offer thelowest Lohm rate. They come in 0.187, 0.250, 0.375 and0.500 inch diameters, in both forward and reverse flowdirections to meet almost any space requirement. Screensare available on the smallest unit. These miniature all-metal checks are rated for 3,000 psi system pressure(except the 187 size which is rated for 4000 psi systems).

Hi-Q CHEKSLee Hi-Q Chek valves offer the greatest feasible flowcapacity for valve cartridges between 1/2 and 1 inch indiameter. The valves feature a unique cage and poppetassembly that maximizes flow capacity at an effectivelylow cost. A robust design and 100% performance testingensures consistent, long term performance in 4000 psisystems.

HIGH PRESSURE CHEKSLee High Pressure Cheks are poppet-style valves for8,000 psi systems. They are offered in five sizes, startingwith the micro-miniature 0.125 inch, up through 0.500inch. All sizes are available both forward and reverseflowing. Screens are available on the two smallest sizes.

PILOT OPERATED CHEKSThe Lee Pilot Operated Chek is an all metal, pressurepiloted to open, check valve. It is a 0.250 inch diameter,poppet-style valve designed for 3000 psi systems.


5

E

BODY MAX. WORKING MAX. SYSTEM PEAKTYPE DIA. LOHMS PRESSURE (psid) PRESSURE (psi)

Lee Chek 0.187" u: 400 3000 4050Axial Flow s: 460 3000 4050

0.250" u:175 3000 4050s: 235 3000 4050

Lee 0.187" u: 140† 4000 5400Chek s: 150† 4000 5400Side Exit 0.343" u: 30 5000 6750

Lee Zero 0.187" u: 400 3000 4050Leak Chek s: 400 3000 4050

Lee Lo-Lohm 0.187" u: 100 4000 5400Chek s: 140†† 4000 5400

0.250" u: 50 3000 40500.375" u: 24 3000 40500.500" u: 12 3000 4050

Lee Hi-Q 0.500" u: 14 4000 5400Chek 0.750" u: 7.5 4000 5400

1.000" u: 3.5 4000 5400

Lee High 0.125" u: 400 8000 9600Pressure s: 460 8000 9600Chek 0.187" u: 210 8000 9600

s: 250 8000 96000.250" u: 60 8000 96000.375" u: 27 8000 96000.500" u: 15 8000 9600

Lee PilotOperated 0.250" u: 300 3000 4050Chek

u = unscreened s = screened† Flow rate limited (See pages E13 and E15)†† Flow rate limited for screened, forward flow version (See pg. E19)


6

E

LEE PART CRACKING LOHM FLOWNUMBER PRESSURE (psid) RATE DIRECTION

CKFA1876005A 5 ± 3 400 FORWARDCKFA1871001A 1 ± 0.5 400 FORWARDCKRA1876005A 5 ± 3 400 REVERSECKRA1871001A 1 ± 0.5 400 REVERSE

Body 303 Cres QQ-S-763CPin 303 Cres QQ-S-763CSpring 17-7PH Cres AMS 5678Ball 440C Cres AMS 5630Ball Follower 303 Cres QQ-S-763CSpring Seat 303 Cres QQ-S-763CCage 303 Cres QQ-S-763C

CKRA1876005A • FREE FLOW REVERSE



CKFA1876005A • FREE FLOW FORWARD

187 Lee ChekAxialFlow

PIN INSERTCAD500

7

E

PERFORMANCE

Tool Set Part Number ............................ CUTA1870104CProcedures ............................................. See Pages L21 – L25Line Mount Configurations ..................... See Pages J6 – J8Replacement Pin Part Number .............. JETA1870003A



Cracking Pressure ............................ 5 ± 3 or 1 ± 0.5 psidMaximum Leakage in ........................ 1 drop/minute at 5 psid

checked direction 1 drop/hour at 1000 - 3000 psidLohm rate at 20 psid and greater ...... 400 Lohms MaximumMaximum Working Pressure ............. 3000 psidNominal Weight ................................. 1.5 gramsValve performance on MIL-H-83282 at 80°F. 1 drop = 50 µL


INSTALLATION HOLE

8

E

LEE CRACKING SCREENPART PRESSURE LOHM HOLE SIZE FLOW

NUMBER (psid) RATE (Inches) DIRECTION

CKFA1875005A 5 ± 3 460 0.008 FORWARDCKFA1875001A 1 ± 0.5 460 0.008 FORWARDCKRA1875005A 5 ± 3 460 0.008 REVERSECKRA1875001A 1 ± 0.5 460 0.008 REVERSE



Body 303 Cres QQ-S-763CPin 303 Cres QQ-S-763CSpring 17-7PH Cres AMS 5678Ball 440C Cres AMS 5630Ball Follower 303 Cres QQ-S-763CSpring Seat 303 Cres QQ-S-763CCage 303 Cres QQ-S-763CScreen 304L Cres ASTM A 666

Braze — AMS 4774



PIN INSERT

Axial FlowScreened 187 Lee Chek

CAD501

9

EINSTALLATION AND EXTRACTION

PERFORMANCE

Tool Set Part Number ............................ CUTA1870104CProcedures ............................................. See Pages L21 – L25Line Mount Configurations ..................... See Pages J6 – J8Replacement Pin Part Number .............. JETA1870003A




INSTALLATION HOLE

187 Lee ChekAxial FlowScreened

10

E




Body 303 Cres QQ-S-763CPin 303 Cres QQ-S-763CSpring 17-7PH Cres AMS 5678Ball 440C Cres AMS 5630Ball Follower 303 Cres QQ-S-763CSpring Seat 303 Cres QQ-S-763CCage 303 Cres QQ-S-763C



PIN INSERT



CAD510

11


INSTALLATION HOLE

Tool Set Part Number ............................ CUTA2500106CProcedures ............................................. See Pages L21 – L25Line Mount Configurations ..................... See Pages J9 – J12Replacement Pin Part Number .............. CKFA2500003A


PERFORMANCE




12

E



CKFA2505005A 5 ± 3 235 0.008 FORWARDCKFA2505001A 1 ± 0.5 235 0.008 FORWARDCKRA2505005A 5 ± 3 235 0.008 REVERSECKRA2505001A 1 ± 0.5 235 0.008 REVERSE





Body 303 Cres QQ-S-763CPin 303 Cres QQ-S-763CSpring 17-7PH Cres AMS 5678Ball 440C Cres AMS 5630Ball Follower 303 Cres QQ-S-763CSpring Seat 303 Cres QQ-S-763CCage 303 Cres QQ-S-763CScreen 304L Cres ASTM A 666Braze — AMS 4774


CAD511PIN INSERT

13


PERFORMANCE





INSTALLATION HOLE


14

E

PIN INSERT




Body 17-4PH Cres AMS 5643Pin 17-4PH Cres AMS 5643Spring Seat 17-4PH Cres AMS 5643Spring Guide 304 Cres QQ-S-763Ball Follower 304 Cres QQ-S-763Ball 440C Cres AMS 5630Spring 17-7PH Cres AMS 5678

187 Lee ChekSideExit

CAD520


CKFA1876015A 5 ± 3 140 FORWARD

15

EINSTALLATION AND EXTRACTIONTool Set Part Number ............................ CUTA1870306CProcedures ............................................. See Pages L21 – L25Replacement Pin Part Number .............. CKFA1870004A


INSTALLATION HOLE

PERFORMANCE

Cracking Pressure ........................ 5 ± 3 psidMaximum Leakage in .................... 1 drop/minute at 5 psid

checked direction 1 drop/hour at 1000 - 4000 psidLohm rate at 25 psid and greater ..... 140 Lohms MaximumMaximum Flow Rate ..................... 6 GPMMaximum Working Pressure ......... 4000 psid in checked directionNominal Weight ............................. 1.0 grams

Valve performance on MIL-H-83282 at 80°F. 1 drop = 50 µL

187 Lee ChekSideExit

16

EBody 17-4PH Cres AMS 5643Pin 17-4PH Cres AMS 5643Spring Seat 17-4PH Cres AMS 5643Spring Guide 304 Cres QQ-S-763Ball Follower 304 Cres QQ-S-763Ball 440C Cres AMS 5630Springs 17-7PH Cres AMS 5678Screen 304L Cres ASTM A 666

Braze — AMS 4774Post 303 Cres QQ-S-763C



SCREEN PIN INSERT


LEE CRACKING SCREEN MAX.PART PRESSURE LOHM HOLE SIZE FLOW FLOW

NUMBER (psid) RATE (Inches) DIRECTION RATE (GPM)

CKFA1875035A 5 ± 3 150 0.004 FORWARD 4CKFA1875045A 5 ± 3 150 0.006 FORWARD 6CKFA1875055A 5 ± 3 150 0.008 FORWARD 6CKFA1875065A 5 ± 3 150 0.015 FORWARD 6

Note: For additional screen information see Page H45.

Side ExitScreened 187 Lee Chek

CAD521

17

E

INSTALLATION HOLE

Tool Set Part NumberInsert .............................. CUTA1870306CScreen ........................... CUTA1870228C

Procedures ............................................. See Pages L21 – L25Replacement Pin Part Number .............. CKFA1870004A



PERFORMANCE

Cracking Pressure ......................... 5 ± 3 psidMaximum Leakage in ..................... 1 drop/minute at 5 psid

checked direction 1 drop/hour at 1000 - 4000 psidLohm rate at 25 psid and greater ... 150 Lohms MaximumMaximum Working Pressure .......... 4000 psid in checked directionNominal Weight .............................. 1.5 grams


187 Lee ChekSide ExitScreened

18

E MATERIALSPART MATERIAL SPECIFICATION

Body Rear 303 Cres QQ-S-763CBody Front 15-5PH Cres AMS 5659Spring 17-7PH Cres AMS 5078Poppet 15-5PH Cres AMS 5659Nose Seal 6061-T6 AL AMS 4117

PIN PLUG INSERT


CHRA3436305A 5 ± 3 30 REVERSE

CHRA3436305A • FREE FLOW REVERSE

.343 Side Exit Chek


NOTE: .343 diameter Lee Pin/Plug Set sold seperately,see Section A

CAD525

19


INSTALLATION HOLE

PERFORMANCE

Cracking Pressure .............................. 5 ± 3 psidMaximum Leakage in .......................... 1 drop/minute at 5 psid

checked direction 1 drop/hour at 1000 - 5000 psidLohm rate at 15 psid and greater ........ 30 Lohms MaximumMaximum Working Pressure ............... 5000 psidNominal Weight ................................... 3.6 grams (Insert only)


.343 Side Exit Chek

Tool Set Part Number .................................. CUTA3430106CProcedures ............................................ See Pages L21 – L25Replacement Nose Seal Part Number .......... CHRA3430009A


20

EBody 304 Cres QQ-S-763Cage 304 Cres QQ-S-763Poppet 15-5PH Cres AMS 5659Seat 15-5PH Cres AMS 5659Spring 17-7PH Cres AMS 5678Pin 17-4PH Cres AMS 5643Elastomeric Seat Fluorocarbon MIL-R-83485

or MIL-R-83248EPDM MIL-R-83285

Fluorosilicone MIL-R-25980


Each valve containsone of the following

elastomeric materials.

CSFA1876000A • FREE FLOW FORWARD

CSRA1876000A • FREE FLOW REVERSE


PIN INSERT

CAD560

187 Zero Leak Chek

21

E

Cracking Pressure ........................................................ 5 ± 3 psidFree Flow ............... 400 Lohms Max. Restriction when fully openLeakage in Checked Direction ... Zero Leakage from 5-3000 psidMaximum Working Pressure Differential ....................... 3000 psidNominal Weight ............................................................ 2.3 gramsTest Fluid .................................................................... Air at 70°F

INSTALLATION HOLE

INSTALLATION AND EXTRACTIONTool Set Part Number ............................. CUTA1870110CProcedures .............................................. See Pages L21 – L25Line Mount Configurations ...................... See Pages J6 – J8Replacement Pin Part Number ............... CKFA1870005A


LEE CRACKINGPART PRESSURE LOHM SEAT FLOW TEMP.

NUMBER (psid) RATE MATERIAL DIRECTION RANGE (°F)

CSFA1876005A 5 ± 3 400 Fluorocarbon Forward -30 / +390CSRA1876005A 5 ± 3 400 Fluorocarbon Reverse -30 / +390CSFA1876105A 5 ± 3 400 EPDM Forward -55 / +290CSRA1876105A 5 ± 3 400 EPDM Reverse -55 / +290CSFA1876205A 5 ± 3 400 Fluorosilicone Forward -80 / +340CSRA1876205A 5 ± 3 400 Fluorosilicone Reverse -80 / +340

PERFORMANCE

187 Zero Leak Chek

22

E


NOTE: for additional Screen information see page H45.

Body 304 Cres QQ-S-763Cage 304 Cres QQ-S-763Poppet 15-5PH Cres AMS 5659Seat 15-5PH Cres AMS 5659Spring 17-7PH Cres AMS 5678Pin 17-4PH Cres AMS 5643Screen 304L Cres QQ-S-766Braze — AMS 4774Post 303 Cres QQ-S-763CSpring (screen) 17-7PH Cres AMS 5678Elastomeric Seat Fluorocarbon MIL-R-83485




Each valve containsone of the following

elastomeric materials.

PIN INSERT

CSFA1875000A • FREE FLOW FORWARD

CAD561

187 Zero Leak ChekForwardScreened

23

E


INSTALLATION HOLE

Tool Set Part Number: Insert ................... CUTA1870110CScreen ................ CUTA1870228C

Procedures ............................................... See Pages L21 – L25Replacement Pin Part Number ................ CKFA1870005AReplacement Screen Part Number .......... FSSA1870150B


PERFORMANCE

LEE CRACKINGPART PRESSURE

LOHM SEAT FLOW TEMP.


CSFA1875005A 5 ± 3 400 Fluorocarbon Forward -30 / +390CSFA1875105A 5 ± 3 400 EPDM Forward -55 / +290CSFA1875205A 5 ± 3 400 Fluorosilicone Forward -80 / +340

Cracking Pressure ........................................................ 5 ± 3 psid

Free Flow ............... 400 Lohms Max. Restriction when fully openLeakage in Checked Direction ... Zero Leakage from 5-3000 psidScreen Hole Size ................................................. 0.015" NominalMaximum Working Pressure Differential ....................... 3000 psidNominal Weight ................... Valve: 2.3 grams / Screen: .4 gramsTest Fluid .................................................................... Air at 70°F

187 Zero Leak ChekForwardScreened

24

E

PIN INSERT

CSRA1875005A • FREE FLOW REVERSE



Each valve containsone of the followingelastomeric materials.

187 Zero Leak ChekReverseScreened

CAD562

Body 304 Cres QQ-S-763Cage 304 Cres QQ-S-763Poppet 15-5PH Cres AMS 5659Seat 15-5PH Cres AMS 5659Spring 17-7PH Cres AMS 5678Pin 17-4PH Cres AMS 5643Screen 303 Cres QQ-S-763CElastomeric Seat Fluorocarbon MIL-R-83485



25

E

INSTALLATION HOLE

INSTALLATION AND EXTRACTIONTool Set Part Number .............................. CUTA1870110CProcedures ............................................... See Pages L21 – L25Line Mount Configurations ....................... See Pages J6 – J8Replacement Pin Part Number ................ CKFA1870005A


LEE CRACKINGPART PRESSURE

LOHM SEAT FLOW TEMP.


CSRA1875005A 5 ± 3 400 Fluorocarbon Reverse -30 / +390CSRA1875105A 5 ± 3 400 EPDM Reverse -55 / +290CSRA1875205A 5 ± 3 400 Fluorosilicone Reverse -80 / +340

Cracking Pressure ........................................................ 5 ± 3 psid

Free Flow ............... 400 Lohms Max. Restriction when fully openLeakage in Checked Direction ... Zero Leakage from 5-3000 psidScreen Hole Size ................................................. 0.015" NominalMaximum Working Pressure Differential ....................... 3000 psidNominal Weight ................... Valve: 2.3 grams / Screen: .4 gramsTest Fluid .................................................................... Air at 70°F

PERFORMANCE

187 Zero Leak ChekReverseScreened

26

E







PIN INSERT

187 Lo-Lohm ChekCAD530

Body 304 Cres QQ-S-763Pin 17-4PH Cres AMS 5643Poppet 15-5PH Cres AMS 5659Spring 17-7PH Cres AMS 5678Spring Seat 304 Cres QQ-S-763

27


PERFORMANCE





INSTALLATION HOLE

187 Lo-Lohm Chek

28

E


SCREEN PIN INSERT

Note: For additional screen information see page H45.



CKFA1875205A 5 ± 3 140 0.015 FORWARD

CKFA1875201A 1 ± 0.5 140 0.015 FORWARD



ForwardScreened 187 Lo-Lohm Chek

Body 304 Cres QQ-S-763Pin 17-4PH Cres AMS 5643Poppet 15-5PH Cres AMS 5659Springs 17-7PH Cres AMS 5678Spring Seat 304 Cres QQ-S-763Screen 304L Cres ASTM A 666


CAD531

29

E

INSTALLATION HOLE

INSTALLATION AND EXTRACTIONTool Set Part Number: Insert ................. CUTA1870110C

Screen .............. CUTA1870228CInstallation/Extraction Procedures .......... See Pages L21 – L25Replacement Pin Part Number ............... CKFA1870005AReplacement Screen Part Number ......... FSSA1870150B


PERFORMANCE

Cracking Pressure .......................... 5 ± 3 or 1 ± 0.5 psidMaximum Leakage in ...................... 1 drop/minute at 5 psid

checked direction 1 drop/hour at 1000 - 4000 psidLohm rate at 15 psid and greater .... 140 Lohms MaximumMaximum Flow Rate ....................... 8 GPMNom. Screen Hole Size ................... .015 InchMaximum Working Pressure ............ 4000 psid in checked directionNominal Weight ............................... 1.8 grams


187 Lo-Lohm ChekForwardScreened

30

E



CKRA1875205A 5 ± 3 140 0.015 REVERSE

CKRA1875201A 1 ± 0.5 140 0.015 REVERSE


Body 304 Cres QQ-S-763Pin 17-4PH Cres AMS 5643Poppet 15-5PH Cres AMS 5659Spring 17-7PH Cres AMS 5678Screen 303 Cres QQ-S-763CSpring Seat 304 Cres QQ-S-763



PIN INSERT

ReverseScreened 187 Lo-Lohm Chek

CAD532

31

E

INSTALLATION HOLE

PERFORMANCE






ReverseScreened 187 Lo-Lohm Chek

32

E



CKFA2506201A 1 ± 0.5 50 FORWARD

CKRA2506205A 5 ± 3 50 REVERSE

CKRA2506201A 1 ± 0.5 50 REVERSE



PIN INSERT



250 Lo-Lohm Chek



Poppet 15-5PH Cres AMS 5659

Spring 17-7PH Cres AMS 5678

Spring Seat 304 Cres QQ-S-763

CAD535

33


INSTALLATION HOLE

PERFORMANCE



Tool Set Part Number ............................ CUTA2500306CProcedures ............................................. See Pages L21 – L25Line Mount Configurations ....... See Pages J9 – J12, J34 – J45Replacement Pin Part Number .............. CKFA2500005A


250 Lo-Lohm Chek

34

E


CKFA3756201A 1 ± 0.5 24 FORWARD

CKRA3756205A 5 ± 3 24 REVERSE

CKRA3756201A 1 ± 0.5 24 REVERSE



PIN INSERT


Body 304 Cres QQ-S-763Pin 17-4PH Cres AMS 5643Poppet 15-5PH Cres AMS 5659Spring Seat 304 Cres QQ-S-763Spring 17-7PH Cres AMS 5678




35

E

INSTALLATION HOLE

PERFORMANCE






375 Lo-Lohm Chek

36

E




PIN INSERT








Spring Seat 303 Cres QQ-S-763C


37


INSTALLATION HOLE

PERFORMANCE


checked direction 1 drop/hour at 1000 - 3000 psidLohm rate at 15 psid and greater ...... 12 Lohms MaximumMaximum Working Pressure ............. 3000 psidNominal Weight ................................. 20 gramsValve performance on MIL-H-83282 at 80°F. 1 drop = 50 µL



500 Lo-Lohm Chek

38

E



CKFA5006405A 5 ± 3 14 FORWARDCKRA5006405A 5 ± 3 14 REVERSE



500 Hi-Q Chek Insert

PIN INSERT


CAD570

Body, Front 15-5PH Cres AMS 5659Body, Rear 304 Cres QQ-S-763Poppet 440C Cres AMS 5630Spring 17-7PH Cres AMS 5678Cage 304 Cres ASTM A 666Pin 15-5PH Cres AMS 5659

39

E

500 Hi-Q Chek Insert

INSTALLATION HOLE


Cracking Pressure ............................ 5 ± 3 psidMaximum Leakage in ........................ 1 drop/minute at 5 psid




PERFORMANCE

40

EBody 15-5PH Cres AMS 5659Poppet 440C Cres QQ-S-763Spring 17-7PH Cres AMS 5678Retainer 30-8 MO Cres AMS 5629Cage 304 Cres ASTM A 666


CKBA0500605A

LEE PART CRACKING LOHMNUMBER PRESSURE (psid) RATE

CKBA0500605A 5 ± 3 14


500 Hi-Q Chek

Customer Supplied: O-Ring M83461/1-012, Backup M8791/1-012

CAD571

41

E

INSTALLATION HOLE

PERFORMANCE



Note: For Line Mount Configuration see pages J18 - J19.

500 Hi-Q Chek

42

EBody 15-5PH Cres AMS 5659

Poppet 440C Cres QQ-S-763


Retainer 13-8 MO Cres AMS 5629

Cage 304 Cres ASTM A 666



CKBA0750605A 5 ± 3 7.5

CKBA0750605A


750 Hi-Q Chek


CAD572

43

E


checked direction 1 drop/hour at 1000 - 4000 psidLohm rate at 15 psid and greater ...... 7.5 Lohms MaximumMaximum Working Pressure ............. 4000 psidNominal Weight ................................. 30 grams


Note: For Line Mount Configurations see pages J18-J19

INSTALLATION HOLE

PERFORMANCE

750 Hi-Q Chek

44

EBody 15-5PH Cres AMS 5659

Poppet 440C Cres QQ-S-763







CKBA1000605A 5 ± 3 3.5

CKBA1000605A

1000 Hi-Q Chek


CAD573

45

E

INSTALLATION HOLE

PERFORMANCE


checked direction 1 drop/hour at 1000 - 4000 psidLohm rate at 15 psid and greater ...... 3.5 Lohms MaximumMaximum Working Pressure ............. 4000 psidNominal Weight ................................. 55 grams


Note: For Line Mount Configurations see pages J18-J19.

1000 Hi-Q Chek

46

E


CHFA1256505A 5 ± 3 400 FORWARDCHFA1256501A 1 ± 0.5 400 FORWARDCHRA1256505A 5 ± 3 400 REVERSECHRA1256501A 1 ± 0.5 400 REVERSE


CHFA1256505A • FREE FLOW FORWARD


Body 304 Cres QQ-S-763Pin 13-8 MO Cres AMS 5629Poppet 15-5PH Cres AMS 5659Spring 17-7PH Cres AMS 5678Spring Seat 304 Cres QQ-S-763


PIN INSERT

HighPressure 125 Chek

CAD540

47


INSTALLATION HOLE



PERFORMANCE



125 ChekHighPressure

48

EMATERIALS


Body 304 Cres QQ-S-763Pin 13-8 MO Cres AMS 5629Poppet 15-5PH Cres AMS 5659Spring 17-7PH Cres AMS 5678Spring Seat 304 Cres QQ-S-763


PIN INSERT



CHFA1255505A 5 ± 3 460 0.008 FORWARD

CHFA1255501A 1 ± 0.5 460 0.008 FORWARD


125 ChekForward ScreenedHigh Pressure

CAD541

49


INSTALLATION HOLE

PERFORMANCE





Forward ScreenedHigh Pressure 125 Chek

50

E

PIN INSERT




CHRA1255505A 5 ± 3 460 0.008 REVERSE

CHRA1255501A 1 ± 0.5 460 0.008 REVERSE



Body 304 Cres QQ-S-763Pin 13-8 MO Cres AMS 5629Poppet 15-5PH Cres AMS 5659Spring 17-7PH Cres AMS 5678Spring Seat 304 Cres QQ-S-763Screen 15-5PH Cres AMS 5659

125 ChekReverse ScreenedHigh Pressure

CAD542

51

E

INSTALLATION HOLE





PERFORMANCE



52

E





PIN INSERT




CAD543





Spring Seat 304 Cres QQ-S-763

53


INSTALLATION HOLE

PERFORMANCE



Tool Set Part Number ............................ CUTA1870210CProcedures ............................................. See Pages L21 – L25Line Mount Configurations ..................... See Page J8Replacement Pin Part Number .............. JHHA1870003A



54

E



CHFA1875505A 5 ± 3 250 0.015 FORWARD

CHFA1875501A 1 ± 0.5 250 0.015 FORWARD

Note: For additional screen information see page H15.



Body 304 Cres QQ-S-763Pin 17-4PH Cres AMS 5643Poppet 15-5PH Cres AMS 5659Springs 17-7PH Cres AMS 5678Screen 304L Cres ASTM A 666



SCREEN PIN INSERT

Forward ScreenedHigh Pressure 187 Chek

CAD544

55

E

INSTALLATION HOLE

PERFORMANCE




Tool Set Part Number: Insert ................ CUTA1870210CScreen ............. CUTA1870228C

Procedures ............................................. See Pages L21 – L25Replacement Pin Part Number .............. JHHA1870003A


187 ChekForward ScreenedHigh Pressure

56

E

PIN INSERT



CHRA1875505A 5 ± 3 250 0.015 REVERSE

CHRA1875501A 1 ± 0.5 250 0.015 REVERSE


Body 304 Cres QQ-S-763Pin 17-4PH Cres AMS 5643Poppet 15-5PH Cres AMS 5659Spring 17-7PH Cres AMS 5678Spring Seat 304 Cres QQ-S-763Screen 303 Cres QQ-S-763C




CAD545

57

E

INSTALLATION HOLE

PERFORMANCE




Tool Set Part Number ............................ CUTA1870210CProcedures ............................................. See Pages L21 – L25Line Mount Configurations ..................... See Page J8Replacement Pin Part Number .............. JHHA1870003A



58

E



PIN INSERT







CAD546

59

E

INSTALLATION HOLE

INSTALLATION AND EXTRACTIONTool Set Part Number ............................ CUTA2500406CProcedures ............................................. See Pages L21 – L25Line Mount Configurations .................... See Pages J11 – J12,

J34 – J35, J40 – J41Replacement Pin Part Number .............. CHFA2500003A


PERFORMANCE




60

E



PIN INSERT







CAD547

61

E

INSTALLATION HOLE



PERFORMANCE



Tool Set Part Number ............................ CUTA3750306CProcedures ............................................. See Pages L21 – L25Line Mount Configurations ..................... See Pages J34 – J35,

J40 – J41Replacement Pin Part Number .............. PHRA3750003A


62

E



CHFA5006505A 5 ± 3 15 FORWARD

CHFA5006501A 1 ± 0.5 15 FORWARD

CHRA5006505A 5 ± 3 15 REVERSE

CHRA5006501A 1 ± 0.5 15 REVERSE




PIN INSERT



CAD548

63

E

INSTALLATION HOLE


Tool Set Part Number ............................ CUTA5000206CProcedures ............................................. See Pages L21 – L25Line Mount Configurations ..................... See Pages J34 – J35,

J40 – J41Replacement Pin Part Number .............. CHFA5000003A


PERFORMANCE




64

E

PIN INSERT

(Port C to Port A) (Port A to Port C)LEE CRACKING MIN. PILOTED

PART PRESSURE PILOT LOHMFLOW

NUMBER (psid) RATIO RATEDIRECTION

CPRA2506005A 5 ± 3 3:1 300 REVERSE

Body 304 Cres QQ-S-763Springs 17-7PH Cres AMS 5678Poppet 15-5PH Cres AMS 5659Pilot Piston 13-8 MO Cres AMS 5629Pin 17-4PH Cres AMS 5643Piston Seal Teflon MS8791/1

Compression Seal Polyamide - Imide ASTM D 5204


CPRA2506005A • FREE FLOW REVERSE

Finish: All Cres Parts Passivated per QQ-P-35Pins are prewaxed. Do not degrease. Do not lubricate.

250 ChekPilotOperated

CAD555

65

E

PERFORMANCE

INSTALLATION AND EXTRACTIONTool Set Part Number ............................ CUTX0503050BProcedures ............................................. See Pages L21 – L27Replacement Pin Part Number .............. CKFA2500005AReplacement Compression Seal ........... CPRA2500009A


Cracking Pressure: (Port C to Port A, Port B at 0 psig) ......... 5 ± 3 psid

Minimum Pilot Ratio: (Port A Pressure/Port B Pressure,Port C at 0 psig) ........................................................................... 3:1

Piloted Flow Rate: (Port A to Port C) .................. 300 Lohms Maximum

Leakage in Checked Direction: (Port A to Port C,Port B at 0 psig) ........................... 1 drop/minute Maximum at 5 psid

1 drop/hour Maximum at 1000 - 3000 psid

Pilot Piston Leakage: (Port B to Port A and Port C, Port A andPort C at 0 psig) ..................... 1 drop/minute Maximum at 3000 psid

Maximum Working Pressure ................................................. 3000 psid

Nominal Weight ..................................................................... 5.3 grams


INSTALLATION HOLE

250 ChekPilotOperated

F

Relief Valves

F

1

❑ High Capacity Miniature Inserts

❑ Available in Cracking Pressuresfrom 20 - 5400 psid

❑ Models Available for Low orHigh Flow Rates

❑ Optimized for Relieving Small Flows

❑ Low Leakage

❑ No Elastomers

❑ Available for 3000, 4000,and 5000 psi Systems

Relief Valves

F

2TABLE OF CONTENTS

187 0.187" diameter miniature lowPRI pressure relief: 20 - 100 psid,

400 - 460 Lohms .......... 3 – 6, 8 – 11

281 0.281" diameter safetyPRI relief: 80 - 3,600 psid,

220 - 280 Lohms ........ 3 – 6, 12 – 19

375 0.375" diameter, lowMomentum pressure, high flowPRI relief: 50 - 500 psid,

100 Lohms ................. 3 – 6, 20 – 21

500 0.500" diameter, lowMomentum pressure, high flowPRI relief: 50 - 500 psid,

50 Lohms ................... 3 – 6, 22 – 23

281 High 0.281" diameter, highPressure pressure relief: 3,000 - 5900PRI psid, 1500 Lohms ....... 3 – 6, 24 – 25

375 0.375" diameter highHigh pressure relief for 4,000Pressure and 5,000 psi systems,PRI 350 - 400 Lohms ........ 4 – 6, 26 – 27

187 0.187" diameter, thermalTRI pressure relief for 3,000

& 4,000 psi systems ... 4 – 7, 28 – 29

250 0.250" diameter highHigh pressure thermalPressure pressure relief for up toTRI 5,000 psi systems ...... 4 – 7, 30 – 31

Introduction Relief Valves

F

3187 and 281 PRIThe 187 and 281 PRI valves are specifically designed to bethe smallest valves available for safety relief applications.Both are constructed entirely of stainless steel and areavailable screened and unscreened for design flexibility.Built-in damping assures quiet operation.

The 187 PRI is the smallest relief valve, only three six-teenths of an inch in diameter and a little over a half inchlong, covering cracking pressures from 20 to 100 psid. The281 PRI offers 29 standard cracking pressures from 80 to3,600 psid.

375 and 500 MOMENTUM PRIThe 375 and 500 Pressure Relief Valves use the patented“momentum free” design concept. The unique design com-pensates for momentum forces that upset the normal forcebalance of a direct acting valve. These forces are producedby local pressure gradients caused by changes in liquidvelocity. (See “Momentum Forces” on page M22). The resultis a valve that is both linear and stable throughout theoperating range and has low hysteresis, yet is still miniature.The 375 PRI has full open flow capacity of 100 Lohms and the500 PRI has a 50 Lohm capacity. Both are available instandard cracking pressures from 50 to 500 psid.

281 and 375 HIGH PRESSURE PRIThe High Pressure PRI is designed for pressure relief servicewhere operating pressures and pressure spikes are toosevere for conventional safety relief valves. These condi-tions, when encountered by conventional valves can lead toinstability, erosion and other damaging phenomenon.

The 281 High Pressure PRI is designed to overcome suchproblems by utilizing a special poppet design in conjunctionwith a rugged seat design.

The 375 High Pressure PRI is a direct acting 4,000 and 5,000psid relief valve that is stable and has low hysteresis. Thekeys to the valve’s performance are new techniques to


F

4control opening and closing, as well as to minimizefriction. The result is a high performance valve optimizedfor the latest aircraft systems.

This relief valve has been optimized for 4,000 and 5,000psid systems with two standard models for each systempressure. One has a minimum cracking pressure 200 psiabove system pressure, the other shuts off 200 psiabove system pressure.

187 TRI and 250 HIGH PRESSURE TRIThe Lee TRI has been designed to relieve fluid pressurecaused by thermal expansion. When a sealed containeris completely filled with fluid, thermal expansion cancause container rupture or seal failure. The Lee TRIeliminates this hazard.

Because many systems need to relieve only a few dropsof fluid to return to their design pressure, the Lee 187 TRIhas been optimized for relieving small flows. A high Lohmrate restrictor is used in series with a relief valve to limitthe flow rate. This restricts the flow rate sufficiently toensure shut off above system pressure. An advancedtechnology ceramic ball and seat material provides thetoughness and dimensional stability needed for a tightshutoff. The incorporation of an integral 15µm CRESfilter upstream of the valve seat solves the low flowcontamination problem. The Lee TRI is not recom-mended for general pressure relief service. Excess totalflow through this valve may cause clogging of the integralfilter.

Lee also offers a 250 High Pressure TRI that is a blendof the 281 High Pressure PRI and 187 TRI technologies.This valve is intended for thermal relief applicationswhere the thermal relief valve will experience severepressure spikes or pressure change rates in excess of25,000 psi per second. The valves tight hysteresis andrugged design make it the preferred selection for thesetypes of applications.


F

5SELECTING A RELIEF VALVELee relief valves come in a wide range of styles. Eachstyle has been developed to satisfy specific relief needscommonly found in hydraulic systems. These may varywidely from the intermittently exercised safety “pop-off”application, to the continuously running pressurizingvalve or the special requirements relieving a few drop-lets of oil from a trapped volume being heated.

Since these applications are very different it is importantthat the correct valve is selected to ensure properfunctioning of the system. This introduction will help youto make that selection.

SELECTION CRITERIAPreliminary selection criteria are the Lohm rate at the“flow-point” (calculated from the flow and differentialpressure using the Lohm law) and the cracking pres-sure. Use the chart to find the valve types with a suitablerange of cracking pressures. Then choose a valve typewith a Lohm rate lower than the calculated number.


F

6

CHARACTERISTICS

LOHMS SUITABLE FORPRES. AT MIN. METERING THERMAL

VALVE TYPICAL BAND* VALVE PARTLY PRESSURE

TYPE APPLICATIONS % LIFT** OPEN RELIEF

187 PRI 1) General L.P. relief 40 1500 Yes No2) Pressurizing valve3) As a check valve

281 PRI 1) Safety "pop-off" relief 40 1500 No No2) Cross port load

alleviation375 1) Filter by-pass relief 35 500 Yes NoMomentum 2) Lubrication systemsPRI 3) Fuel systems500 1) Filter by-pass relief 35 350 Yes NoMomentum 2) Lubrication systemsPRI 3) Fuel systems281 1) Combination thermal 25 Not No YesHigh pressure relief and LimitedPressure low flow reliefPRI 2) General low-flow relief187 1) Thermal pressure 25 Not Yes YesTRI relief only Limited375 High 1) General H.P. relief 28 1500 Yes NoPressure 2) Cross port loadPRI alleviation250 High 1) H.P. thermal 25 Not Yes YesPressure pressure LimitedTRI relief only

* Pressure Band defined as:pressure at flow point – pressure at shut off

cracking pressure

** Lohms at minimum valve lift is derived from the minimum valve openingnecessary to avoid silting.

x 100( )

The final selection involves matching the valve’s operatingcharacteristics with the desired function in the hydraulic system.The principal characteristics of each valve type are tabulatedbelow.


F

7ADDITIONAL CONSIDERATIONS FORTHERMAL PRESSURE RELIEFGiven a system volume and maximum temperature rise rate,you can find the relief flow rate caused by thermal expansion ofthe fluid. The Nomogram is for Skydrol 500, but may be usedwith other fluids having approximately the same coefficient ofcubical thermal expansion (MIL-H-5606). Other fluid flows mustbe calculated using the formula and coefficients found on pagesM24 – M25.

Compare the flow rate calculated with the flow at the Flow Pointfor a TRI valve with a suitable cracking pressure (see Table onpage F26 or F30). If the calculated flow rate is less than the oneshown in the table, the Lee TRI will limit thermally inducedpressure in your system to no more than the Flow Pointpressure shown.

LEE TRI FLOW NOMOGRAMFOR SKYDROL 500 OR MIL-H-5606 AT 100˚F


F

8

LEE PART NUMBER CRACKINGFORWARD REVERSE PRESSURE (psid)

PRFA1872020L PRRA1872020L 20PRFA1872040L PRRA1872040L 40PRFA1872060L PRRA1872060L 60PRFA1872080L PRRA1872080L 80PRFA1872100L PRRA1872100L 100

PRRA1872020L • RELIEF FLOW REVERSE

PRFA1872020L • RELIEF FLOW FORWARD

PIN INSERT


Body 303 Cres QQ-S-763CPin 17-4PH Cres AMS 5643Spring 17-7PH Cres AMS 5678Ball 440C Cres AMS 5630Cage 303 Cres QQ-S-763CSpring Seat 303 Cres QQ-S-763CBall Follower 303 Cres QQ-S-763C


187 PRICAD500

F

9INSTALLATION HOLE

Tool Set Part Number ........................... CUTA1870104CProcedures ............................................ See Pages L21 – L25Line Mount Configurations .................... See Pages J6 – J8Replacement Pin Part Number ............. JETA1870004A



PERFORMANCE

Tolerance on Cracking Pressure ..................... ± 10%Full Open Lohm Rate ....................................... 400 Lohms (max.)Lohm Rate at 125% of Actual Crack. ............... 1100 Lohms (max.)Restriction at Min. Recommended Valve Lift ... 1500 Lohms (max.)Reseat Leakage (90% of Actual Crack.) .......... 10 drops/min.(max.)Shut off Leakage (85% of Actual Crack.) ......... 10 drops/hour(max.)Maximum Working Pressure ............................ 3000 psidNominal Weight ................................................ 1.5 grams


187 PRI

F

10

Body 303 Cres QQ-S-763CPin 17-4PH Cres AMS 5643Spring 17-7PH Cres AMS 5678Ball 440C Cres AMS 5630Screen 304L Cres ASTM A 666

Braze — AMS 4774Cage 303 Cres QQ-S-763CSpring Seat 303 Cres QQ-S-763CBall Follower 303 Cres QQ-S-763C

LEE PART NUMBER CRACKING SCREEN HOLE

FORWARD REVERSE PRESSURE (psid) SIZE (Inches)

PRFA1875020L PRRA1875020L 20 0.008PRFA1875040L PRRA1875040L 40 0.008PRFA1875060L PRRA1875060L 60 0.008PRFA1875080L PRRA1875080L 80 0.008PRFA1875100L PRRA1875100L 100 0.008


PIN INSERT




Screened 187 PRICAD501

F

11INSTALLATION HOLE

PERFORMANCE

Tolerance on Cracking Pressure ...................... ± 10%Full Open Lohm Rate ........................................ 460 Lohms (max.)Lohm Rate at 125% of Actual Crack. ................ 1500 Lohms (max.)Restriction at Min. Recommended Valve Lift .... 1500 Lohms (max.)Reseat Leakage (90% of Actual Crack.) ........... 10 drops/min.(max.)Shut off Leakage (85% of Actual Crack.) .......... 10 drops/hour(max.)Screen Hole Size .............................................. 0.008" NominalMaximum Working Pressure ............................. 3000 psidNominal Weight ................................................ 1.7 grams


Tool Set Part Number ............................. CUTA1870104CProcedures .............................................. See Pages L21 – L25Line Mount Configurations ...................... See Pages J6 – J8Replacement Pin Part Number ............... JETA1870004A



Screened 187 PRI

F

12


See pages F14-F15 for performance data and part numbers.

PIN INSERT

Body 303 Cres QQ-S-763CPin 303 Cres AMS 5643Tube 304 Cres QQ-S-763Spring 17-7PH Cres AMS 5678Ball 440C Cres AMS 5630Ball Follower 303 Cres QQ-S-763CSpring Seat 303 Cres QQ-S-763C




281 PRICAD600

F

13INSTALLATION HOLE

Tool Set Part Number ............................. CUTA2810114CProcedures .............................................. See Pages L21 – L25Line Mount Configurations ...................... See Pages J9 – J12Replacement Pin Part Number ............... PRFA2810003A



PERFORMANCE

Leakage at Minimum Cracking Pressure .. 1 drop/minute (max.)Leakage at Shut-off ................................... 20 drops/minute(max.)Restriction at MinimumRecommended Valve Lift .......................... 1500 LohmsMaximum Working Pressure ..................... 3000 psidSystem Peak Pressure ............................. 5000 psiNominal Weight ......................................... 4.5 grams


281 PRI

F

14

MINIMUMCRACKINGPRESSURE

(psid)

PRFA2812080L PRRA2812080L 80PRFA2812120L PRRA2812120L 120PRFA2812200L PRRA2812200L 200PRFA2812300L PRRA2812300L 300PRFA2812400L PRRA2812400L 400PRFA2812500L PRRA2812500L 500PRFA2812600L PRRA2812600L 600PRFA2812700L PRRA2812700L 700PRFA2812800L PRRA2812800L 800PRFA2812900L PRRA2812900L 900PRFA2812100D PRRA2812100D 1000PRFA2812110D PRRA2812110D 1100PRFA2812120D PRRA2812120D 1200PRFA2812140D PRRA2812140D 1400PRFA2812160D PRRA2812160D 1600PRFA2812180D PRRA2812180D 1800PRFA2812200D PRRA2812200D 2000PRFA2812220D PRRA2812220D 2200PRFA2812240D PRRA2812240D 2400PRFA2812250D PRRA2812250D 2500PRFA2812260D PRRA2812260D 2600PRFA2812280D PRRA2812280D 2800PRFA2812300D PRRA2812300D 3000PRFA2812310D PRRA2812310D 3100PRFA2812320D PRRA2812320D 3200PRFA2812330D PRRA2812330D 3300PRFA2812340D PRRA2812340D 3400PRFA2812350D PRRA2812350D 3500PRFA2812360D PRRA2812360D 3600

LEE PART NUMBER

FORWARD REVERSE

281 PRI

F

15

MAX.LOHMRATE

281 PRI

FLOW POINT MINIMUM MIN. RECOMMENDEDMIL-H-83282 SHUTOFF VALVE LIFT

MIN. AT PRESSURE MAX. MIN.GPM (psid) (psid) Lohms GPM

220 0.9 100 68 1500 0.2220 1.1 150 100 1500 0.2220 1.5 250 170 1500 0.3220 1.8 375 255 1500 0.3220 2.1 500 340 1500 0.4220 2.4 625 425 1500 0.4220 2.6 750 510 1500 0.4220 2.8 875 595 1500 0.5220 3.0 1000 680 1500 0.5220 3.2 1125 765 1500 0.5220 3.4 1250 850 1500 0.5220 3.5 1375 935 1500 0.6220 3.7 1500 1020 1500 0.6220 4.0 1750 1190 1500 0.6220 4.3 2000 1360 1500 0.7220 4.5 2250 1530 1500 0.7220 4.8 2500 1700 1500 0.8220 5.0 2750 1870 1500 0.8220 5.2 3000 2040 1500 0.8220 5.4 3125 2125 1500 0.8220 5.5 3250 2210 1500 0.9220 5.7 3500 2380 1500 0.9220 5.9 3750 2550 1500 0.9280 4.7 3875 2635 1500 0.9280 4.8 4000 2720 1500 0.9280 4.9 4125 2805 1500 1.0280 5.0 4250 2890 1500 1.0280 5.0 4375 2975 1500 1.0280 5.1 4500 3060 1500 1.0

F

16

See pages F18-F19 for performance data and part numbers.

PIN INSERT

Body 303 Cres QQ-S-763CPin 303 Cres QQ-S-763CTube 304 Cres QQ-S-763Spring 17-7PH Cres AMS 5678Ball 440C Cres AMS 5630Screen 304L Cres ASTM A 666

Braze — AMS 4774Ball Follower 303 Cres QQ-S-763CSpring Seat 303 Cres QQ-S-763C





Screened 281 PRICAD605

F

17INSTALLATION HOLE


PERFORMANCE

Leakage at Minimum Cracking Pressure .. 1 drop/minute (max.)Leakage at Shut-off ................................... 20 drops/minute (max.)Restriction at MinimumRecommended Valve Lift .......................... 1500 LohmsScreen Hole Size ...................................... 0.008" NominalMaximum Working Pressure ..................... 3000 psidSystem Peak Pressure ............................. 5000 psiNominal Weight ......................................... 6.0 grams


Tool Set Part Number .......................... CUTA2810114CProcedures ........................................... See Pages L21 – L25Line Mount Configurations ................... See Pages J9 – J12Replacement Pin Part Number ............ PRFA2810003A


Screened 281 PRI

F

18 Screened 281 PRI

MINIMUMCRACKINGPRESSURE

(psid)

PRFA2815080L PRRA2815080L 80PRFA2815120L PRRA2815120L 120PRFA2815200L PRRA2815200L 200PRFA2815300L PRRA2815300L 300PRFA2815400L PRRA2815400L 400PRFA2815500L PRRA2815500L 500PRFA2815600L PRRA2815600L 600PRFA2815700L PRRA2815700L 700PRFA2815800L PRRA2815800L 800PRFA2815900L PRRA2815900L 900PRFA2815100D PRRA2815100D 1000PRFA2815110D PRRA2815110D 1100PRFA2815120D PRRA2815120D 1200PRFA2815140D PRRA2815140D 1400PRFA2815160D PRRA2815160D 1600PRFA2815180D PRRA2815180D 1800PRFA2815200D PRRA2815200D 2000PRFA2815220D PRRA2815220D 2200PRFA2815240D PRRA2815240D 2400PRFA2815250D PRRA2815250D 2500PRFA2815260D PRRA2815260D 2600PRFA2815280D PRRA2815280D 2800PRFA2815300D PRRA2815300D 3000PRFA2815310D PRRA2815310D 3100PRFA2815320D PRRA2815320D 3200PRFA2815330D PRRA2815330D 3300PRFA2815340D PRRA2815340D 3400PRFA2815350D PRRA2815350D 3500PRFA2815360D PRRA2815360D 3600

LEE PART NUMBER

FORWARD REVERSE

F

19Screened 281 PRI

MAX.LOHMRATE

FLOW POINT MINIMUM MIN. RECOMMENDEDMIL-H-83282 SHUTOFF VALVE LIFT

MIN. AT PRESSURE MAX. MIN.GPM (psid) (psid) Lohms GPM

300 0.7 100 68 1500 0.2300 0.8 150 100 1500 0.2300 1.1 250 170 1500 0.3300 1.3 375 255 1500 0.3300 1.6 500 340 1500 0.4300 1.7 625 425 1500 0.4300 1.9 750 510 1500 0.4300 2.1 875 595 1500 0.5300 2.2 1000 680 1500 0.5300 2.4 1125 765 1500 0.5300 2.5 1250 850 1500 0.5300 2.6 1375 935 1500 0.6300 2.7 1500 1020 1500 0.6300 2.9 1750 1190 1500 0.6300 3.2 2000 1360 1500 0.7300 3.4 2250 1530 1500 0.7300 3.5 2500 1700 1500 0.8300 3.7 2750 1870 1500 0.8300 3.9 3000 2040 1500 0.8300 4.0 3125 2125 1500 0.8300 4.0 3250 2210 1500 0.9300 4.2 3500 2380 1500 0.9300 4.3 3750 2550 1500 0.9350 3.8 3875 2635 1500 0.9350 3.8 4000 2720 1500 0.9350 3.9 4125 2805 1500 1.0350 4.0 4250 2890 1500 1.0350 4.0 4375 2975 1500 1.0350 4.1 4500 3060 1500 1.0

F

20

MIN. FLOW POINT MIN.LEE PART NUMBER CRACK SHUT-OFF

PRESS. LOHM MIN. AT PRESS.FORWARD REVERSE (psid) RATE GPM (psid) (psid)

PRFA3756050L PRRA3756050L 50 100 1.7 63 45PRFA3756080L PRRA3756080L 80 100 2.1 100 72PRFA3756120L PRRA3756120L 120 100 2.6 150 108PRFA3756200L PRRA3756200L 200 100 3.4 250 180PRFA3756300L PRRA3756300L 300 100 4.2 375 270PRFA3756400L PRRA3756400L 400 100 4.8 500 360PRFA3756500L PRRA3756500L 500 100 5.4 625 450



PIN INSERT

Body 304 Cres QQ-S-763Pin 17-4PH Cres AMS 5643Poppet 15-5PH Cres AMS 5659Spring Seat 304 Cres QQ-S-763Spring 17-7PH Cres AMS 5678Seat 440C Cres AMS 5630



375 PRICAD536

F

21

Leakage at Minimum Cracking Pressure .. 5 drops/minute (max.)Leakage at Shut-off ................................... 20 drops/minute (max.)Restriction at MinimumRecommended Valve Lift .......................... 500 LohmsMaximum Working Pressure ..................... 3000 psidNominal Weight ......................................... 10.0 grams


INSTALLATION HOLE

INSTALLATION AND EXTRACTIONTool Set Part Numbers: Forward ........... CUTA3750106C

Reverse ........... CUTA3750214CProcedures .............................................. See Pages L21 – L25Replacement Pin Part Number ............... CKFA3750003A


PERFORMANCE

375 PRI

F

22PIN INSERT

Body 304 Cres QQ-S-763Pin 15-5PH Cres AMS 5659Poppet 15-5PH Cres AMS 5659Spring Seat 303 Cres QQ-S-763CSpring 17-7PH Cres AMS 5678Seat 440C Cres AMS 5630




PRFA5006050L PRRA5006050L 50 50 3.4 63 45PRFA5006080L PRRA5006080L 80 50 4.2 100 72PRFA5006120L PRRA5006120L 120 50 5.2 150 108PRFA5006200L PRRA5006200L 200 50 6.8 250 180PRFA5006300L PRRA5006300L 300 50 8.4 375 270PRFA5006400L PRRA5006400L 400 50 9.6 500 360PRFA5006500L PRRA5006500L 500 50 10.8 625 450




500 PRICAD537

F

23INSTALLATION HOLE

PERFORMANCE

Tool Sets Part Numbers: Forward .......... CUTA5000106CReverse .......... CUTA5000116C

Procedures .............................................. See Pages L21-L25Replacement Pin Part Number ............... CKFA5000003A



Leakage at Minimum Cracking Pressure ... 10 drops/minute (max.)Leakage at Shut-off .................................... 20 drops/minute (max.)Restriction at MinimumRecommended Valve Lift ........................... 350 LohmsMaximum Working Pressure ...................... 3000 psidNominal Weight .......................................... 20.0 grams


500 PRI

F

24PIN INSERT




PHFA2815300D PHRA2815300D 3000 1500 0.90 3600 2850PHFA2815320D PHRA2815320D 3200 1500 0.90 3850 3000PHFA2815340D PHRA2815340D 3400 1500 0.95 4050 3200PHFA2815420D PHRA2815420D 4200 1500 1.0 4750 3700PHFA2815450D PHRA2815450D 4500 1500 1.0 5100 4000PHFA2815470D PHRA2815470D 4700 1500 1.1 5300 4200PHFA2815520D PHRA2815520D 5200 1500 1.1 5800 4550PHFA2815570D PHRA2815570D 5700 1500 1.2 6350 5000PHFA2815590D PHRA2815590D 5900 1500 1.2 6600 5200

281 PRIHighPressure


PHFA2815320DRELIEF FLOW FORWARD

PHRA2815320DRELIEF FLOW REVERSE

CAD641

Body 15-5PH Cres AMS 5659Pin 15-5PH Cres AMS 5659Seat 440C Cres AMS 5630Ball WC —Spring Seat 303 Cres QQ-S-763CTube 304 Cres QQ-S-763Ball Follower 303 Cres QQ-S-763CSpring 17-7PH AMS 5678Screen 304L Cres ASTM A 666

Braze — AMS 4774

F

25INSTALLATION HOLE

PERFORMANCE

Leakage at Minimum Cracking Pressure .. 10 drops/minute (max.)Leakage at Shut-off ................................... 10 drops/minute (max.)Screen Hole Size ...................................... 0.004" NominalMaximum Working Pressure ..................... 5000 psidSystem Peak Pressure ............................. 7500 psiNominal Weight ......................................... 6.0 grams


INSTALLATION AND EXTRACTIONTool Set Part Number ........................... CUTA2810114CProcedures ............................................ See Pages L21 – L25Line Mount Configurations .................... See Pages J11 – J12Replacement Pin Part Number ............. SHBA2810003A

For boss size see page L19. For oversize see page L23

281 PRIHighPressure

F

26PIN INSERT

MIN. FLOW POINT MIN.LEE CRACK SHUT-OFF

PART PRESSURE LOHM MIN. AT PRESS.NUMBER (psid) RATE GPM (psid) (psid)

PHRA3750042H 4200 400 4.0 5200 4000PHRA3750044H 4400 400 4.1 5400 4200PHRA3750052H 5200 350 4.9 6550 5000PHRA3750054H 5400 350 5.0 6750 5200

PHRA3750042H • RELIEF FLOW REVERSE


375 PRIHighPressure


Body 15-5PH Cres AMS 5659Pin 17-4PH Cres AMS 5643Poppet 15-5PH Cres AMS 5659Seat 440C Cres AMS 5630Spring 17-7PH Cres AMS 5678Ball 440C Cres AMS 5630Retainer 304 Cres QQ-S-763Guide 17-4PH Cres AMS 5643

CAD650

F

27

Leakage at Minimum Cracking Pressure .. 40 drops/minute (max.)Leakage at Shut-off ................................... 40 drops/minute (max.)Restriction at MinimumRecommended Valve Lift .......................... 1500 LohmsMaximum Working Pressure ..................... 5000 psidSystem Peak Pressure ............................. 6750 psiNominal Weight ......................................... 15.5 grams


INSTALLATION HOLE


PERFORMANCE

Tool Set Part Number ............................. CUTA3750114CProcedures .............................................. See Pages L21 – L25Replacement Pin Part Number ............... PHRA3750003A


375 PRIHighPressure

F

28PIN INSERT


PART PRESSURE LOHM MIN. AT PRESS.NUMBER (psid) RATE ml/min. (psid) (psid)

PRTA1871350D 3500 325 000 15 4050 3200PRTA1871470D 4700 325 000 17 5300 4200

PRTA1871350D • RELIEF FLOW REVERSE

Body 304 Cres QQ-S-763Pin 17-4PH Cres AMS 5643Spring Seat 304 Cres QQ-S-763Spring 17-7PH Cres AMS 5678Ball Follower 17-4PH Cres AMS 5643Ball Ceramic —Seat Ceramic —Orifice 17-4PH Cres AMS 5643Filter 316 Cres 15 µm Nominal



187 TRICAD630

F

29

Leakage at Minimum Cracking Pressure .. 4 drops/minute (max.)Leakage at Shut-off ................................... 40 drops/hour (max.)

after a 2 minute waitIntegral Filtration ....................................... 15µm NominalMaximum Working Pressure ..................... 4000 psidSystem Peak Pressure ............................. 5400 psiNominal Weight ......................................... 2.6 grams


INSTALLATION HOLE


PERFORMANCE

Tool Set Part Number .......................... CUTA1870104CProcedures .......................................... See Pages L21 – L25Line Mount Configurations ................... See Pages J6 – J8Replacement Pin Part Number ............ JEVA1870003A


187 TRI

F

30

PHTA2501470D • RELIEF FLOW REVERSE

PIN INSERT


PHTA2501350D 3500 105 000 50 4050 3200PHTA2501470D 4700 122 000 50 5300 4200PHTA2501580D 5800 136 000 50 6650 5200


PART PRESSURE LOHM MIN. AT PRESS.NUMBER (psid) RATE ml/min. (psid) (psid)

HighPressure 250 TRI

Body 304 Cres QQ-S-763Pin 17-4PH Cres AMS 5678Seat 440C Cres AMS 5630Ball Tungsten Carbide —Spring Seat 303 Cres QQ-S-763CTube 304 Cres QQ-S-763Ball Follower 303 Cres QQ-S-763CSpring 17-7PH AMS 5678Screen 316 Cres —


CAD636

F

31

Leakage at Minimum Cracking Pressure .. 3 drops/minute (max.)Leakage at Shut-off ................................... 3 drops/minute (max.)

after a 2 minute waitIntegral Filtration ....................................... 10µm NominalMaximum Working Pressure ..................... 5000 psidSystem Peak Pressure ............................. 7500 psiNominal Weight ......................................... 4.5 grams


INSTALLATION HOLE


PERFORMANCE

Tool Set Part Number ........................... CUTA2500406CProcedures ............................................ See Pages L21 – L25Line Mount Configurations .................... See Pages J11 – J12Replacement Pin Part Number ............. CHFA2500003A


250 TRIHighPressure

36

G

Lee Shuttle Valves

1

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❑ Miniature Insert Fits in theHead of an Actuator

❑ Eliminates Common Mode Failures

❑ Non-interflow Design

❑ No Elastomeric Seals Required

❑ Low Leakage or Zero Leakage

Lee Shuttle Valves

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TABLE OF CONTENTSSpring Biased 0.187", 0.281" & 0.500" DiameterShuttle Valves Spring Biased Shuttle Valves

for 4000 psi systems ........................ 6 – 13

High Pressure 0.187", 0.281" & 0.500" DiameterSpring Biased Spring Biased Shuttle ValvesShuttle Valves for 5000 psi systems ...................... 14 – 19

Detented 0.281" & 0.500" DiameterShuttle Valves Detented Shuttle Valves in

All-Metal or Zero Leak Versions ..... 20 – 27

Selective 0.187", 0.250" & 0.500" DiameterShuttle Valves Non-Biased Shuttle Valves ............ 28 – 33

Inverse 0.500" Diameter Inverse ShuttleShuttle Valves Valves for up to 5000 psi systems ... 34 – 35

The Lee Shuttle Valve is offered in four configurations. Onetype is the spring biased shuttle valve with the emergencyport normally closed. Another type is the detented shuttlevalve where the poppet latches to close off either theemergency port or the normal port. Also there are selectiveshuttle valves with a non-biased, loose ball design. Finallythere are inverse shuttle valves where the lower pressureinlet port is open to the common port instead of the higherpressure inlet port.

Lee Shuttle Valves are designed to isolate the normal fromthe emergency hydraulic system during normal operation.When pressure is lost in the normal system and emergencypressure is applied, the poppet shuttles across to block thenormal port allowing flow to the cylinder. Lee Spring Biasedand Detented Shuttle Valves are of the "non-interflow' type,which means the normal port closes before the emergencyport opens. At no time are all 3 ports open simultaneously.The interflow leak is limited to less than 3 mL per cyclepermitted by MIL-V-19068. The requirement for this valve iscommonly found in aircraft landing gear hydraulic systemsshown in a typical circuit on the opposite page.

"N" PORTNORMAL

"E" PORTEMERGENCY

"S" PORT - SERVICE

Introduction Shuttle Valves

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DOORACTUATOR

GEAR RETRACT

GEAR EXTEND

281FLOW

CONTROL

HIGHWATTJET

500 SHUTTLE VALVE

GEARUP

LOCKGEARDOWNLOCK

187 SHUTTLEVALVE

EMERGENCY GEAR EXTEND

GEARACTUATOR

187 SHUTTLEVALVE

DOOR OPEN

DOOR CLOSE

HIGHWATT JET

HIGHWATT JET

281SHUTTLE

VALVE

HIGHWATT JET

DOORLOCK

CLOSED

DOORLOCKOPEN

LANDING GEAR(Shown Retracted)


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Lee Spring Biased Shuttle Valves can be used to reducethe flow required to extend a large unequal area actua-tor, where reduced actuation force may be permissiblein one direction. When the retract line is pressurized thevalve shuttles across to isolate the retract line from theextend line. When the extend line is pressurized thevalve blocks the retract line allowing flow from thesmaller area retract side of the piston to flow to theextend side. Only a small "make-up" flow is requiredfrom the main hydraulic system.

Lee Detented Shuttle Valves are intended for use insystems where bidirectional flow is required betweenthe "S" and "E" ports, such as in most brake circuits.These applications require a detented/latching poppetdesign. A zero leak version of the detented shuttle is alsoavailable. This design is essential for systems using agas emergency system to back up the primary hydraulicsystem.

The Lee Inverse Shuttle Valve operates in a manneropposite to that of a Spring Biased Shuttle Valve. Ratherthan sensing and allowing the higher pressure side toflow, it selects the lower pressure and allows it to flowinstead. For example, if the pressure at port A is greaterthan the pressure at port B, port A closes and forcesopen port B, allowing flow between B and C. The

RETRACTEXTEND


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opposite is true if the pressure at port B is greater thanat A. It is also possible to flow out port A and Bsimultaneously when C is the inlet. This valve can beused in a variety of different applications such as sens-ing the lower pressure of two different lines or providingan anti-cavitation and anti-pressure intensification func-tion when used in hydrostatic actuation systems.

Lee Shuttle Valves are miniature inserts that are sosmall they fit right in the head of an actuator, savingspace and weight, as well as protecting them fromexternal physical damage. With direct communicationfrom the "S" port into the actuator, without externalplumbing, common mode failures are virtually elimi-nated.

As with all Lee inserts, they require no O-rings orelastomeric seals. Since the shuttle valve is a three portinsert, an additional seal beyond the normal locking endis required. The "nose seal" works in the same manneras a locking end except a tapered section of the insertbody acts as the tapered pin. The nose seal rests on a45˚ shoulder and is expanded as the body is presseddown into the installation hole.

Some sizes of the spring biased shuttle valves areavailable with filter screens which prevent large con-taminants generated in the actuator from getting into thevalve or the hydraulic system.


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Body – Rear 304L Cres QQ-S-763Body – Front 15-5PH Cres AMS 5659Pin 17-4PH Cres AMS 5643Spring 17-7PH Cres AMS 5678Poppet 440C Cres AMS 5630Nose Seal 6061-T6 Al AMS 4117Barrel Screen 15-5PH Cres AMS 5659Screens 304L Cres QQ-S-766

Base Washers 304L Cres QQ-S-766Braze — AMS 4774

PIN INSERT


Finish: All Cres Parts Passivated per QQ-P-35,All Aluminum Parts Alodine per MIL-C-5541

Pins are prewaxed. Do not degrease. Do not lubricate.

SVBA1870170D

187Spring Biased Shuttle Valve

CAD700

7

GINSTALLATION AND EXTRACTION

Tool Set Part Number ............................. CUTA1870137CProcedures .............................................. See Pages L21 – L27Replacement Pin Part Number ............... CKFA1870005AReplacement Nose Seal Part Number .... SVBA1870009B

For Boss size see page L19. For oversize see page L23.

INSTALLATION HOLE

Flow Rate:Normal (N to S or S to N) ................. 700 Lohms Max. Restriction

(.22 GPM min. at 50 psid)Emergency (E to S) .......................... 700 Lohms Max. Restriction

(.22 GPM min. at 50 psid)Maximum Rated Flow ................................................... 1.3 GPMShuttling Pressure ....... 15 psid (Minimum) 40 psid (Maximum)Leakage: (N to E or E to N .................. 5 Drops/Hour (Maximum)

at 4000 psid) after 2 Minute waitScreen Hole Size ................................ 0.008" Nom.Maximum Working Pressure ............... 4000 psiNominal Weight ................................... 1.5 grams


PERFORMANCE

Shuttle Valve187Spring Biased

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PIN INSERT

SVBA2810313D

Body – Rear 304L Cres QQ-S-763Body – Front 15-5PH Cres AMS 5659Pin 303 Cres QQ-S-763CSpring 17-7PH Cres AMS 5678Poppet 440C Cres AMS 5630Nose Seal 6061-T6 Al AMS 4117





CAD710

9


INSTALLATION HOLE

PERFORMANCEFlow Rate:

Normal (N to S or S to N) .................. 130 Lohms Max. Restriction(1.2 GPM min. at 50 psid)

Emergency (E to S) ........................... 130 Lohms Max. Restriction(1.2 GPM min. at 50 psid)

Maximum Rated Flow ................................................... 7.2 GPMShuttling Pressure ....... 15 psid (Minimum) 40 psid (Maximum)Leakage: (N to E or E to N .................. 5 Drops/Hour (Maximum)

at 4000 psid) after 2 Minute waitMaximum Working Pressure ............... 4000 psiNominal Weight ................................... 4.0 grams


Tool Set Part Number ............................. CUTA2810137CProcedures .............................................. See Pages L21 – L27Replacement Pin Part Number ............... PRFA2810003AReplacement Nose Seal Part Number .... SVBA2810009B


Shuttle Valve281Spring Biased

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SVBA2810118D

PIN INSERT

281 ScreenedSpring Biased Shuttle Valve

Body – Rear 304L Cres QQ-S-763Body – Front 15-5PH Cres AMS 5659Pin 303 Cres QQ-S-763CSpring 17-7PH Cres AMS 5678Poppet 440C Cres AMS 5630Nose Seal 6061-T6 Al AMS 4117Barrel Screen 15-5PH Cres AMS 5659Screens 304L Cres QQ-S-766





CAD715

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INSTALLATION HOLE

INSTALLATION AND EXTRACTIONTool Set Part Number ............................. CUTA2810137CProcedures .............................................. See Pages L21 – L27Replacement Pin Part Number ............... PRFA2810003AReplacement Nose Seal Part Number .... SVBA2810009B


PERFORMANCE

Flow Rate:Normal (N to S or S to N) .................. 180 Lohms Max. Restriction

(0.85 GPM min. at 50 psid)Emergency (E to S) ........................... 180 Lohms Max. Restriction

(0.85 GPM min. at 50 psid)Maximum Rated Flow ................................................... 6.0 GPMShuttling Pressure ....... 15 psid (Minimum) 40 psid (Maximum)Leakage: (N to E or E to N .................. 5 Drops/Hour (Maximum)

at 4000 psid) after 2 Minute waitScreen Hole Size ................................ 0.008"Maximum Working Pressure ............... 4000 psiNominal Weight ................................... 5.0 grams


Shuttle Valve281 ScreenedSpring Biased

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PIN INSERT

SVBA5000335L


Body – Rear 15-5PH Cres AMS 5659Body – Front 15-5PH Cres AMS 5659Pin 15-5PH Cres AMS 5659Spring 17-7PH Cres AMS 5678Poppet 440C Cres AMS 5630Nose Seal 6061-T6 Al AMS 4117




CAD720

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INSTALLATION HOLE


INSTALLATION AND EXTRACTIONTool Set Part Number ............................. CUTA5000137CProcedures .............................................. See Pages L21 – L27Replacement Pin Part Number ............... SVBA5000003AReplacement Nose Seal Part Number .... SVBA5000009B



Normal (N to S or S to N) .................... 35 Lohms Max. Restriction(4.4 GPM min. at 50 psid)

Emergency (E to S) ............................. 35 Lohms Max. Restriction(4.4 GPM min. at 50 psid)

Maximum Rated Flow ................................................. 20.4 GPMShuttling Pressure ....... 15 psid (Minimum) 40 psid (Maximum)Leakage: (N to E or E to N ................... 5 Drops/Hour (Maximum)

at 4000 psid) after 2 Minute waitMaximum Working Pressure ................ 4000 psiNominal Weight .................................... 17 grams


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Body – Rear 304L Cres QQ-S-763Body – Front 15-5PH Cres AMS 5659Pin 17-4PH Cres AMS 5643Spring 17-7PH Cres AMS 5678Poppet 440C Cres AMS 5630Nose Seal 6061-T6 Al AMS 4117Barrel Screen 15-5PH Cres AMS 5659Screens 304L Cres QQ-S-766


PIN INSERT




SHBA1870170D

187 High PressureSpring Biased Shuttle Valve

CAD730

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INSTALLATION HOLE

INSTALLATION AND EXTRACTIONTool Set Part Number ............................. CUTA1870137CProcedures .............................................. See Pages L21 – L27Replacement Pin Part Number ............... JHHA1870003AReplacement Nose Seal Part Number .... SVBA1870009B



(.22 GPM min. at 50 psid)Emergency (E to S) ........................... 700 Lohms Max. Restriction


at 4000 psid) after 2 Minute waitScreen Hole Size ................................ 0.008" Nom.Maximum Working Pressure ............... 5000 psiNominal Weight ................................... 1.5 grams


PERFORMANCE

Shuttle Valve187 High PressureSpring Biased

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PIN INSERT

Body – Rear 304L Cres QQ-S-763Body – Front 15-5PH Cres AMS 5659Pin 15-5PH Cres AMS 5659Spring 17-7PH Cres AMS 5678Poppet 440C Cres AMS 5630Nose Seal 6061-T6 Al AMS 4117Barrel Screen 15-5PH Cres AMS 5659Screens 304L Cres QQ-S-766Base Washers 304L Cres QQ-S-766Braze — AMS 4774




SHBA2810118D


CAD732

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INSTALLATION HOLE

Tool Set Part Number ............................. CUTA2810137CProcedures .............................................. See Pages L21 – L27Replacement Pin Part Number ............... SHBA2810003AReplacement Nose Seal Part Number .... SVBA2810009B


PERFORMANCE


(.85 GPM min. at 50 psid)Emergency (E to S) ........................... 180 Lohms Max. Restriction


at 4000 psid) after 2 Minute waitScreen Hole Size ................................ 0.008"Maximum Working Pressure ............... 5000 psiNominal Weight ................................... 5.0 grams



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PIN INSERT

SHBA5000335L


Body – Rear 304L Cres QQ-S-763Body – Front 15-5PH Cres AMS 5659Pin 17-4PH Cres AMS 5643Spring 17-7PH Cres AMS 5678Poppet 440C Cres AMS 5630Nose Seal 6061-T6 Al AMS 4117




CAD734

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INSTALLATION HOLE


Normal (N to S or S to N) ................... 35 Lohms Max. Restriction(4.4 GPM min. at 50 psid)

Emergency (E to S) ............................ 35 Lohms Max. Restriction(4.4 GPM min. at 50 psid)

Maximum Rated Flow ................................................. 20.4 GPMShuttling Pressure ....... 15 psid (Minimum) 40 psid (Maximum)Leakage: (N to E or E to N ................... 5 Drops/Hour (Maximum)

at 4000 psid) after 2 Minute waitMaximum Working Pressure ................ 5000 psiNominal Weight .................................... 17 grams


INSTALLATION AND EXTRACTIONTool Set Part Number ............................. CUTA5000237CProcedures .............................................. See Pages L21 – L27Replacement Pin Part Number ............... CHFA5000003AReplacement Nose Seal Part Number .... SVBA5000009B



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PIN INSERT

SVDA2812311D

Shuttle Valve281Detented

Body – Rear 15-5PH Cres AMS 5659Body – Front 15-5PH Cres AMS 5659Pin 17-4PH Cres AMS 5643Spring 17-7PH Cres AMS 5678Poppet 440C Cres QQ-S-763Compression Seal Polyimide —Ball 440C Cres AMS 5630




CAD740

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INSTALLATION HOLE


(A to C or B to C) ............................. 110 Lohms Max. Restriction(1.4 GPM min. at 50 psid)

Shuttling Pressure ..... 25 psid (Minimum) 100 psid (Maximum)Leakage: (A to B or B to A .................. 1 Drop/Hour (Maximum)

at 1000-4000 psid) after 2 Minute waitLeakage: (A to B or B to A .................. 1 Drop/Minute (Maximum)

at 5 psid) after 2 Minute waitMaximum Working Pressure ............... 4000 psiNominal Weight ................................... 4.0 grams


Tool Set Part Number ............................. CUTA2810137CProcedures .............................................. See Pages L21 – L27Replacement Pin Part Number ............... SHBA2810003AReplacement Compression Seal

Part Number .................................... SVDA2810009A



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PIN INSERT

SVDA5002330L


Body – Rear 15-5PH Cres AMS 5659Body – Front 15-5PH Cres AMS 5659Pin 17-4PH Cres AMS 5643Spring 17-7PH Cres AMS 5678Poppet 440C Cres QQ-S-763Compression Seal Polyamide-Imide MIL-P-46179Ball 440C Cres AMS 5630




CAD742

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INSTALLATION HOLE


(A to C or B to C) ............................... 30 Lohms Max. Restriction(5.1 GPM min. at 50 psid)

Shuttling Pressure ..... 25 psid (Minimum) 100 psid (Maximum)Leakage: (A to B or B to A .................. 1 Drop/Hour (Maximum)

at 1000-5000 psid) after 2 Minute waitLeakage: (A to B or B to A .................. 1 Drop/Minute (Maximum)

at 5 psid) after 2 Minute waitMaximum Working Pressure ............... 5000 psiNominal Weight ................................... 17 grams


Tool Set Part Number ............................. CUTA5000337CProcedures .............................................. See Pages L21 – L27Replacement Pin Part Number ............... SVBA5000003AReplacement Compression

Seal Part Number ............................. SVDA5000009A



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SVDA2811311D

PIN INSERT

281 ZeroLeak Detented Shuttle Valve

Body – Rear 15-5PH Cres AMS 5659Body – Front 15-5PH Cres AMS 5659

Body – Center 15-5PH Cres AMS 5659Pin 17-4PH Cres AMS 5643Spring 17-7PH Cres AMS 5678

Seal Retainers 15-5PH Cres AMS 5659

Seat Polyimide —Poppet 440C Cres AMS 5630Compression Seal Polyimide —Ball 440C Cres AMS 5630




CAD745

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PERFORMANCE

Flow Rate:(A to C or B to C) ............................. 110 Lohms Max. Restriction

(1.4 GPM min. at 50 psid)Shuttling Pressure ..... 25 psid (Minimum) 100 psid (Maximum)Leakage: (A to B or B to A ..................... Zero Bubbles/Min. of N2

at 500-4000 psid) after 2 Minute waitMaximum Working Pressure .................. 4000 psiNominal Weight ...................................... 4.0 grams


INSTALLATION HOLE

Tool Set Part Number ............................. CUTA2810137CProcedures .............................................. See Pages L21 – L27Replacement Pin Part Number ............... SHBA2810003AReplacement Compression

Seal Part Number ............................ SVDA2810009A


Shuttle Valve281 ZeroLeak Detented

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PIN INSERT

SVDA5001335L


Body – Rear 15-5PH Cres AMS 5659Body – Front 15-5PH Cres AMS 5659

Body – Center 15-5PH Cres AMS 5659Pin 15-5PH Cres AMS 5659Spring 17-7PH Cres AMS 5678

Seal Retainers 15-5PH Cres AMS 5659

Seat Polyimide —Poppet 440C Cres AMS 5630Compression Seal Polyamide-Imide ASTM D 5204Ball 440C Cres AMS 5630




CAD747

27


Tool Set Part Number ............................. CUTA5000337CProcedures .............................................. See Pages L21 – L27Replacement Pin Part Number ............... SVBA5000003AReplacement Compression



INSTALLATION HOLE


(A to C or B to C) ............................... 35 Lohms Max. Restriction(4.4 GPM min. at 50 psid)

Shuttling Pressure ..... 25 psid (Minimum) 100 psid (Maximum)Leakage: (A to B or B to A .................. Zero Bubbles/Min. of N2

at 500-5000 psid) after 2 Minute waitMaximum Working Pressure ............... 5000 psiNominal Weight ................................... 17 grams



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PIN INSERT



Body – Rear 303 Cres QQ-S-763Body – Front 303 Cres QQ-S-763Pin 17-4PH Cres AMS 5643Ball 440C Cres AMS 5630


SVSA1870135D

Shuttle Valve187Selective

CAD750

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INSTALLATION HOLE


PERFORMANCE

Flow Rate:(A to C or B to C) ............................. 350 Lohms Max. Restriction

(0.4 GPM min. at 50 psid)Shuttling Pressure ........................................... 1 psid (Maximum)Leakage: (A to B or B to A ................... 1 ml/Minute (Maximum)

at 3000 psid) after 2 Minute waitMaximum Working Pressure ................ 3000 psiNominal Weight .................................... 1.5 grams


Tool Set Part Number ............................. CUTA1870104CProcedures .............................................. See Pages L21 – L27Replacement Pin Part Number ............... JETA1870003A



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PIN INSERT

SVSA2500320D


Body – Rear 304 Cres QQ-S-763Body – Front 304 Cres QQ-S-763Pin 17-4PH Cres AMS 5643Ball 440C Cres AMS 5630Compression Seal Polyamide-Imide ASTM D 5204




CAD751

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INSTALLATION HOLE


(A to C or B to C) ..................... 200 Lohms Maximum Restriction(0.8 GPM min. at 50 psid)

Shuttling Pressure ..................... 1 psid (Maximum)Leakage: (A to B or B to A ........ 1ml/Minute (Maximum)

at 5000 psid) after 2 Minute waitMaximum Working Pressure ..... 5000 psiNominal Weight ......................... 4.0 grams


INSTALLATION AND EXTRACTIONTool Set Part Number ............................. CUTX0503050BProcedures .............................................. See Pages L21 – L27Replacement Pin Part Number ............... CHFA2500003AReplacement Compression

Seal Part Number ............................. CPRA2500009A



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PIN INSERT

SVSA5000330L


Body – Rear 15-5PH Cres AMS 5659Body – Front 15-5PH Cres AMS 5659Pin 17-4PH Cres AMS 5643Ball 440C Cres AMS 5630Compression Seal Polyamide-Imide MIL-P-46179




CAD753

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INSTALLATION HOLE


(A to C or B to C) ........................ 30 Lohms Maximum Restriction(5.1 GPM min. at 50 psid)

Leakage: (A to B or B to A ........... 1ml/Minute (Maximum)at 5000 psid) after 2 Minute wait

Maximum Working Pressure ........ 5000 psiNominal Weight ............................ 17 grams


INSTALLATION AND EXTRACTIONTool Set Part Number ............................. CUTA5000337CProcedures .............................................. See Pages L21 – L27Replacement Pin Part Number ............... SVBA5000003AReplacement Compression




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FLOW FLOWA C, B C C A, C B

(at 300 psid) (at 50 psid)

LOHMS GPM LOHMS GPM(Ref.) ±20% (Ref.) (Min.)

SVIA5000350L 50 7.5 35 4.4

SVIA5000375L 75 5.0 35 4.4

SVIA5000310D 100 3.8 35 4.4

PIN INSERT

SVIA5000350L

500Inverse Shuttle Valve

LEEPART NUMBER

Body 304 Cres QQ-S-763Pin 15-5PH Cres AMS 5659Springs 17-7PH Cres AMS 5678Spring Seats 304 Cres QQ-S-763Poppets 15-5PH Cres AMS 5659




CAD758

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PERFORMANCEShuttling Pressure:

A closed (Flow B C) .........................................PA - 6 ≥ PB

B closed (Flow A C) ............................................. PB ≥ PA

Leakage: (A to C or B to C .................. 10 drops/Minute (Max.)at 25 psid) after 2 Minute wait

Maximum Working Pressure ............... 5000 psiNominal Weight ................................... 32 grams


INSTALLATION HOLE

INSTALLATION AND EXTRACTIONTool Set Part Number ............................. CUTA5000206CProcedures .............................................. See Pages L21 – L27Replacement Pin Part Number ............... CHFA5000003A


Shuttle Valve500Inverse

H

Lee Safety Screens

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Lee Safety Screens

❑ Simple, Economical Construction

❑ 6 Methods of Retention forDesign Flexibility

❑ All Stainless Steel Construction

❑ Hole Sizes from .004" to .020"

❑ Rugged, High Strength, One-Piece Design

❑ No Burst or Collapse at7500 psid Fully Clogged

❑ Machined and Drilled fromSolid Stainless Steel Bar Stock

❑ High Contamination Carrying Capacityfor Maximum Protection

❑ Low Lohm, High Flow Capability

❑ Over 150 Standard Versions forDesign Flexibility

❑ Hole Sizes from .003" to .015"

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TABLE OF CONTENTSIntroduction

Relative Rating System forSafety Screens (ROB Numbers) ..................... 3 – 7Filters vs Safety Screens ..................................... 8Clogging .............................................................. 9Location ............................................................. 10Pressure Ratings ....................................... 11 – 12Hole Sizes .................................................. 13 – 14Open Area ......................................................... 14Flow Rating, Cold Start ...................................... 15Construction Methods ................................ 16 – 17Installation Techniques .............................. 18 – 21

Etched Safety ScreensFlange Mounted - FSJ ............................... 24 – 29Boss Mounted - FSB ................................. 30 – 33Insert Retained - FSC ................................ 34 – 37L-4 - FSL .................................................... 38 – 41Spring Retained - FSS ............................... 42 – 45

HI-BAR Safety ScreensFlange Mounted - FSHF ............................ 48 – 55Boss Mounted - FSHB ............................... 56 – 76Boss Access - BAS .................................... 78 – 85Rosán Adapter – FSI ............................... 86 – 101

Special Products ................................... 102 – 103

Introduction Safety Screens

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A RELATIVE RATING SYSTEM FORSAFETY SCREENS

Reprinted in part from 2 articles published in MachineDesign, submitted by R. Kolp, Vice President, Research andDevelopment, The Lee Company.

THE PROBLEMThe need to protect orifices, relief valves, and other sensitivehydraulic components from contamination is widely recog-nized, but contaminant size has a lot to do with the type ofprotection needed. Critical components are often relativelyimmune to low levels of small-size contaminants, but a singlelarge particle can cause sudden failure - possibly with cata-strophic effects. While filters maintain fluid cleanliness duringoperation, large particles, which are built into the system orintroduced later, require a different approach. Here, safetyscreens provide an added level of protection.

Unfortunately, there are no standard methods to comparethe performance of one safety screen to another. This isin contrast to the well-established design and selectionmethods available for rating filter performance, includingbeta ratings and bubble point testing. As a result, hydrau-lic system designers often must resort to costly testingprograms or haphazard trial and error methods to selectthe proper screen.

THE SOLUTIONTo bridge this technology gap, a "resistance to blockage"factor has been developed to explain screen design. Thisfactor relates, without complex analysis or elaborate testing,the roles that the size and number of holes in a screen playin overall performance.

For example, deciding whether a screen with 2000 holes,0.008" in diameter will last longer than one with 1000, 0.015"holes can cause a lot of headaches. To answer such questions,the Resistance to Blockage (ROB) factor was developed.


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The blockage factor is calculated from a volume of fluid withknown contamination required to block a screen. Becausemost safety screens have holes ≥ 0.004" (100 µ), contamina-tion specifications such as NAS 1638 and ISO 4406 are of nouse (the largest particles they deal with are 100 µ). ThusMIL-STD 1246, which deals with large particle contamina-tion, was chosen as the baseline for comparison. Using MIL-STD 1246 Class 200 fluid, the blockage factor is defined.

ROB =

wheren = 10

and d = hole size, µ, and N = number of holes in a screen.

A master screen with ROB = 1 is defined as having 1000 holesall 100 µ in size. Taking a ratio of any other screen to themaster gives a comparison of the Resistance to Blockage.

Because a ratio is involved, a lot of errors cancel. Factorssuch as the flow rate and mode of clogging may beunknown, but both screens are affected in the samerelative manner. For example, if comparing two screensand the fluid is cleaner than Class 200, both will last longerthan with Class 200 fluid, but they will still clog at the sameratio. About the only data needed are the size and numberof holes.

In all systems, the more known about the fluid environment, themore accurate a design can be. However, lacking detailedknowledge of a system, the ROB factor is a lot better thanguessing because it offers a ranking system independent ofmany system variables.

N

63.25 n

(4.9029 – 0.926 log 2 d)

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ROB numbers provide a reliable means of comparing onescreen design to others. The following table gives a singleorifice ROB number based simply on the diameter of the hole.When multiplied by the number of holes in a screen, thescreen ROB number is obtained.

Screen ROB # = Single orifice ROB # x # of holes.

The screen ROB number is an indication of the relativeresistance to blockage of the screen, independent of the typeof contamination or the flow rate. A higher number indicatesa more blockage resistant screen.

Using the preceding example, it can be seen how easilythe ROB number table (page 6) or graph (page 7) allowscomparison of various screens.

Example: Which screen will be more resistant to block-age? A screen with 2000, 0.008" diameter holes or ascreen with 1000, 0.015" diameter holes?

Solution: From the table look up an 0.008" diameter hole.Its ROB number is 0.0169. Multiplying by 2000 yields thescreen ROB number of 34.

Referring to the table again, for a 0.015" diameter hole thesingle orifice ROB number is found to be 0.291. Againmultiplying by the number of holes (1000) gives the screenROB number of 291. Therefore, in this case, the screen withfewer, larger diameter holes has a higher resistance toblockage.

Alternatively, the Safety Screen Numbers graph on page H7may be used. Simply locate the intersection of the number ofholes and hole size to determine the ROB number.

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Hole Size Single OrificeInch Micron ROB Number

0.002 51 0.0000979

0.003 76 0.000376

0.004 102 0.00106

0.005 127 0.00248

0.006 152 0.00511

0.007 178 0.00963

0.008 203 0.0169

0.009 229 0.0281

0.010 254 0.0448

0.011 279 0.0687

0.012 305 0.1023

0.013 330 0.1482

0.014 356 0.210

0.015 381 0.291

0.016 406 0.397

See Engineering Section, pages M58–M59 for complete ROB

Number Table.

TABLE OF SINGLE ORIFICE ROB NUMBERSFOR SAFETY SCREEN ANALYSIS

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SAFETY SCREEN ROB NUMBERS

8

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Introduction Safety ScreensFILTERS vs. SAFETY SCREENS

All hydraulic systems contain some contamination, and largeparticles are possibly present at start-up or will be introducedduring its lifetime. The particles can be machining chips,Teflon® tape, weld flash, O-ring chips, wear particles, anddebris from failing components. These particles enter thesystem through various means, including:

• Built into new or recently overhauled components.• During introduction of make-up fluid.• Making or breaking line connections.• Component failure.

Often, large particle contamination is the result of some-thing as innocuous as a mechanic snagging a piece of papertowel inside a pipe while cleaning the system.

Filters come in a wide variety of types, sizes, and capacities,and they address a wide ranging size of particle contamina-tion. Typically, filters collect particles less than 100 µ in size.Most often, a single filter is used, but some systems haveseveral located throughout the circuit. In most cases, thefluid contaminants being filtered have circulated throughthe various hydraulic components.

Unfortunately, in aircraft, machine tools, and other largesystems, sensitive components such as check valves,restrictors, and relief valves are often located far from thesystem filter. Thus, they have little protection from largecontaminants. Further, the components are often in hard toreach locations, and failure results in extensive and costlydowntime. Large particles can cause component failure byblocking a flow restrictor or holding open a check valve.Safety screens, either integral to the individual componentor located immediately upstream, provide an added marginof safety.

9

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Introduction Safety ScreensCLOGGING

As a safety screen accumulates particles, the pressure drop willslowly increase until the screen is almost fully clogged. Thenthe pressure drop increases dramatically. For example, con-sider a clean safety screen in a 3000 psi hydraulic system.At its normal flow rate the screen pressure drop is 6 psi. Thatsame screen will see a pressure drop of only 150 psi when 80%clogged. However, at 95% clogged, the differential pressurejumps to 2500 psi. This phenomenon is represented by thefollowing formula:

∆P =

Where ∆PO is the pressure drop across the screenwhen it is clean

This rapid build up of pressure can be withstood by Lee HI-BARScreens which should be specified whenever clogging caninduce a high differential pressure.

∆PO

(1- % clogged)2

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Introduction Safety ScreensLOCATION

The location of a safety screen within a system is a veryimportant design consideration. The safety screen should belocated as close as possible to the critical component it is toprotect. This will allow all of the flow entering this component,and only that flow, to be filtered by the safety screen. Safetyscreens are limited in their filtering capacity and therefore,every effort must be made by the designer to ensure that onlythe flow entering the critical component will pass through thesafety screen. If the flow through a critical component isbidirectional then a safety screen should be located at eachinlet. This design practice is followed with all Lee restrictorsand valves where safety screen protection is required.

Common Nomenclature:

1st Tier Screen Main System Filter

2nd Tier Screen Located in critical flow partsi.e., actuator inlet screens

3rd Tier Screen Located directly on criticalcomponents

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Introduction Safety ScreensPRESSURE RATINGS

The burst or collapse pressure rating of a safety screen is acritical but sometimes overlooked safety screen design con-sideration. The Lee Company defines burst as a rupture in theoutward direction, while collapse is the first sign of permanentdeformation in the inward direction. Although the safetyscreen may not rupture, The Lee Company takes a veryconservative view and considers any sign of deformation afailure. If a safety screen becomes partially or fully clogged,and it is not strong enough to withstand the differentialpressure, the results of this failure could become cata-strophic. When a safety screen ruptures, a sudden, heavyconcentration of dirt flushes downstream, possibly with frag-ments of the screen itself, most likely disabling sensitivedownstream components. This is a "hard" failure as opposedto a "soft" failure in which the flow through a Lee HI-BARsafety screen is gradually reduced (possibly leading to zeroflow). A contamination induced malfunction caused by aruptured safety screen is also unpredictable and can occurwithout warning since safety screens are not equipped with∆P indicators or bypass relief valves.

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Introduction Safety ScreensPRESSURE RATINGS cont.

However infrequent, safety screen failure does happen andtherefore The Lee Company recommends at minimum, thatthe burst or collapse pressure rating of a second tier safetyscreen equal full system pressure. Selecting a safety screenwith a burst and collapse pressure greater than systempressure is conservative design practice. The military speci-fication MIL-H-5440H, "Hydraulic Systems, Aircraft, Designand Installation Requirements For" makes the followingrecommendation for second tier screens (Paragraph3.11.13.1): "It is recommended that second tier screens, asdefined by AIR4057 should, when fully clogged, withstand aproof pressure test without collapse, rupture, or permanentdeformation." Many of today's military and commercial air-craft manufacturers are even specifying second tier safetyscreen burst and collapse pressure requirements equal to theproof pressure of the system. The Lee Company's HI-BARsafety screen product line is designed to meet these require-ments with the rated burst and collapse pressures exceeding7500 psid in both flow directions!

Third tier screens (mounted directly on components) typicallyhave lower burst and collapse ratings.

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Introduction Safety ScreensHOLE SIZES

The safety screen hole size should be based on the minimumpassage size, such as a valve opening or clearance, or orificediameter. Typically, the safety screen hole size is chosen toequal 30 to 70 percent of the minimum passage size. Forexample, a 0.012" diameter orifice might be protected with asafety screen having 0.004" or 0.008" holes, used down-stream of a system filter with a 15 µm rating. It is good designpractice to make certain that the smallest passageways ofcritical components are always maximized. The Lee Com-pany offers a full range of restrictors and valves with opti-mized clearances that are presented in the Lee TechnicalHydraulic Handbook. Lee multi-orifice restrictors, such as theLee Visco Jet

®, provide a high level of restriction to fluid flowusing a tortuous flow path and large minimum passage sizes.Lee Visco Jet

® minimum passage sizes range from 0.005" to0.062" as compared to 0.0015" to 0.026", respectively, forthe equivalent single orifice restriction, greatly reducing con-tamination sensitivity.

The hole size of the safety screen should also be chosen tobe larger than any upstream filter, to prevent clogging by fineparticles normally removed by these filters. There mayoften be three or more levels of filtration or "tiers" that fluidmust flow through before reaching a critical component.For example, in a typical hydraulic system, the systemfluid will first flow through a main system filter (first tier)then branch off to a control valve which has an inlet safetyscreen (second tier). The holes sizes of each subsequenttier should be coarser than the previous one to prevent theaccumulation of contamination at any one level.

14

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Introduction Safety ScreensSTANDARD LEE HOLE SIZES

Etched Safety Screens are available from The Lee Companyin four standard sizes: 0.004", 0.006", 0.008", and 0.015"nominal. HI-BAR screens are available as standard itemswith nominal hole sizes of 0.003", 0.004", 0.006", 0.008" and0.015", and hole sizes as small as 0.002" are also possiblefor special applications.

OPEN AREA

The term "open area" is a useful measure of contaminationholding capacity. When comparing screens of similar holesizes, open area gives a quick indication of the dirt holdingcapacity of one design versus another. It is simply theproduct of the number of holes times the area of a nominalhole. The ratio of open area to total area is called "percentopen area". A high percent open area indicates a potentiallyweaker screen design that is less able to withstand highdifferential pressures.

When a Safety Screen is used to protect an orifice, the openarea of the screen is compared to the open area of the orifice.By taking a simple ratio of the screen open area to the orificearea one can gauge the potential pressure drop across thescreen relative to the orifice.

Open area should only be used when comparing screens ofsimilar hole size and shape. To compare screens withdifferent hole sizes, ROB numbers should be used. Forexample: If two screens have the same open area, onescreen with 0.004" holes and the other with 0.008" holes, thescreen with the larger holes will have 3.9 times the resistanceto blockage as the smaller hole screen!

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Introduction Safety ScreensFLOW RATING

All Lee Safety Screens have a maximum flow rate specifiedexcept HI-BAR screens. These Safety Screens are notlimited by flow and are specifically designed to withstand fullsystem pressure fully clogged up to 7500 psid. This meansHI-BAR Safety Screens can be designed into a 5000 psidsystem and withstand the proof pressure of 7500 psid withoutcollapse or burst while fully clogged in either direction.

COLD START

The flow capacity of a Safety Screen during cold-start mustalso be considered. A cold-start refers to the unusually highpressure drop that occurs through all components includingsafety screens when a system is first started up and the fluidis cold and viscous. The system designer should realize thatdue to the effects of viscosity, a Safety Screen during cold-start may have a pressure drop many times greater thanoperation at normal temperatures. Therefore, a maximumallowable pressure drop across the Safety Screen at therated flow for this condition must be specified.

Typical performance of a 20 Lohm Safety Screen.

16

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Introduction Safety ScreensCONSTRUCTION METHODS FORETCHED SCREENS

Lee Etched Safety Screens are constructed from photo-chemically etched stainless steel stock that is formed andbrazed to a base washer (flange) or insert locking end.

Etched Safety Screens can be formed in two ways; "radialpleated" and "circular pleated". Radial pleated screens arefound on the etched flange and boss mount safety screens,and screened inserts. Circular pleated screens are a pat-ented method of increasing screen open area for a given sizeand are used on the TWIS and L-4 safety screens.

All standard Lee Etched Screens are made from 304Lstainless steel stock. Discs with the etched hole pattern areformed into cups with convoluted sides, to provide the opti-mum amount of protection with the least possible volume.With strict attention to cleanliness throughout the process,these cups are then brazed without flux to a 304L basewasher in a reducing atmosphere of dry hydrogen. Rigorousprocess control and regular microstructural examinationsensure the integrity of Lee Etched Safety Screens. The silverbraze material used conforms with the SAE AerospaceMaterial Specification 4774. Its major characteristics are asfollows:

COMPOSITION NOMINAL VALUES

Silver 63.0%

Copper 28.5%

Tin 6.0%

Nickel 2.5%

RECOMMENDATIONS MAXIMUM TEMPERATURE

Short Term Service 700°F (371°C)

Long Term Service 400°F (204°C)

17

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MAXIMUMSERVICE TEMP.

TYPICAL MATERIALS

MATERIAL HEAT TREAT

15-5PH Cres H1025 900°F (482°C)

303 Cres N/A 400°F (204°C)

2024 Alum T651 300°F (149°C)

CONSTRUCTION METHODS FORDRILLED SCREENS

Lee Drilled Safety Screens are machined from solid barstock, typically 15-5 precipitation hardening stainless steel,although other materials such as 300 series stainless steelsor aluminum alloys may be used for special applications.Individually drilled and deburred by proprietary manufactur-ing processes, these Safety Screens feature an extremelyrobust, one-piece design without joints or seams.

18

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FLANGE MOUNTEDThis is perhaps the most common installation technique as itis simple and economical.

BOSS MOUNTEDA common installation technique that permits removal. Someform of anti-rotation locking is recommended.


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INSERT RETAINEDUtilizing the proven Lee Insert Principle, this technique isideal for simple installation directly into a fluid passageway.

L - 4Featuring three locking fingers that are expanded outwardlocking the screen in a fluid passageway, the L- 4 techniquepermits easy removal for inspection or cleaning. Ideal forbidirectional flow.


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SPRING RETAINEDAn inexpensive mounting technique suitable for unidirectionalflow. The spring O.D. is slightly larger than the I.D. of themounting hole. A special tool is used to twist the spring intothe hole.

TWIS®

Easily removable, the "TWIS" style of installation is readilytwisted in or out of the bore for inspection or cleaning.Unidirectional flow.


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BOSS ACCESSA convenient mounting technique that permits easy removalfor cleaning or inspection.


ROSÁN ADAPTEROften used as inlet screens to actuators, optimizing spaceand weight. Available in MS-flareless, and dynamic beamseal Rosán style adapters complete from The Lee Company.

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Lee Safety Screens22

23

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Lee Safety Screens

ETCHED SAFETY SCREENS

Flange Mounted

Boss Mounted

Insert Retained

L- 4

Spring Retained

TWIS

24

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FSJA GROUP

Lee Safety Screens

25

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FLANGE MOUNTEDSAFETY SCREENS

❑ Simple, economical flange mounted design

❑ 14 standard versions for design flexibility

❑ Maximum open screen area

❑ All stainless steel construction

❑ Hole sizes from 0.004" to 0.020"

Lee Safety Screens

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FlangeMount 1300 Safety Screen

Finish: All Cres Parts Passivated per QQ-P-35.* Collapse . . . first sign of deformation when clogged.


Screen 304L CRES ASTM A 666Base Washer 304L CRES ASTM A 666

Braze Silver Alloy AMS 4774

ROB

NUMBER

PERFORMANCELEE LOHM FLOW BURST COLLAPSE

PART RATE RATE PRESSURE PRESSURENUMBER (nom.) gpm (max.) psid (min.) psid (min.)*

FSJA1300040A 250 2.0 1800 750 1.6FSJA1300060A 250 2.0 2400 1100 3.6FSJA1300080A 250 2.5 3000 3000 4.2FSJA1300150A 250 2.5 3000 2200 44

SPECIFICATIONS (nom.)

LEE HOLE HOLE OPEN TOTAL NUMBERPART SIZE SIZE AREA AREA OF

NUMBER in µm in2 in2 HOLES

FSJA1300040A 0.004 100 0.019 0.062 1500FSJA1300060A 0.006 150 0.020 0.062 700FSJA1300080A 0.008 200 0.014 0.062 250FSJA1300150A 0.015 380 0.026 0.062 150

CAD800

27

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ROB

NUMBER











CAD801

28

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ROB

NUMBER











CAD802

29

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MATERIALPART MATERIAL SPECIFICATION PASSIVATE

Screen 304 CRES QQ-S-763C QQ-P-35

ROB

NUMBER



FSJA1301150A 250 4.0 3000 3000 7.9FSJA1301200A 250 5.0 3000 3000 32




FSJA1301150A 0.015 380 0.005 0.026 27FSJA1301200A 0.020 510 0.009 0.026 27

* Collapse . . . first sign of deformation when clogged.

CAD805

30

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Lee Safety ScreensFSBA, FSBM GROUP

31

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BOSS MOUNTEDSAFETY SCREENS

❑ Easy to install boss mounted design





❑ Low Lohm, high flow capability

Lee Safety Screens

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Safety Screen

ROB

NUMBER




FSBA4370041A 0.004 100 0.09 0.30 7500FSBA4370061A 0.006 150 0.10 0.30 3500FSBA4370081A 0.008 200 0.09 0.30 1800FSBA4370151A 0.015 380 0.11 0.30 620



FSBA4370041A 20 8.0 400 100 8.0FSBA4370061A 20 9.0 800 275 18FSBA4370081A 20 12 1000 500 30FSBA4370151A 20 12 800 275 180

04 BossMount


Screen 304L CRES ASTM A 666Base 304L CRES QQ-S-763Braze Silver Alloy AMS 4774


CAD840

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Safety Screen

ROB

NUMBER



NUMBER in µm mm2 mm2 HOLES

FSBM1000101A 0.004 100 58.0 193 7500FSBM1000151A 0.006 150 64.5 193 3500FSBM1000201A 0.008 200 58.0 193 1800FSBM1000381A 0.015 380 71.0 193 620


PART RATE RATE PRESSURE PRESSURENUMBER (nom.) L/min (max.) kPa (min.) kPa (min.)*

FSBM1000101A 20 30 2760 690 8.0FSBM1000151A 20 34 5515 1895 18FSBM1000201A 20 46 6895 3450 30FSBM1000381A 20 46 5515 1895 180

Metric10 Boss Mount


Screen 304L CRES ASTM A 666Base 304L CRES QQ-S-763Braze Silver Alloy AMS 4774


CAD845

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FSCA GROUP

Lee Safety Screens

35

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INSERT RETAINEDSAFETY SCREENS

❑ Reliable Lee Insert retention





Lee Safety Screens

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FSCA1870040A 250 2.0 1800 750 1.6FSCA1870060A 250 2.0 2400 1100 3.6FSCA1870080A 250 2.5 3000 3000 4.2FSCA1870150A 250 2.5 3000 2200 44

Safety ScreenInsertRetained

PIN INSERT

ROB

NUMBER

MATERIALSPART MATERIAL SPECIFICATIONBody 304L CRES QQ-S-763Pin 17-4PH CRES AMS 5643

Screen 304L CRES ASTM A 666Braze Silver Alloy AMS 4774




FSCA1870040A 0.004 100 0.019 0.062 1500FSCA1870060A 0.006 150 0.020 0.062 700FSCA1870080A 0.008 200 0.014 0.062 250FSCA1870150A 0.015 380 0.026 0.062 150

Installation/Extraction Tool Set Part Number ................... CUTA1870128CReplacement Pin Part Number ........................................ JEHA1870003AInstallation and Extraction Procedures ............................ See pages L21–L23* Collapse . . . first sign of deformation when clogged.

Finish: All CresParts Passivatedper QQ-P-35.

Pins arepre-waxed.Do not degrease.Do not lubricate.

CAD810

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Safety ScreenInsertRetained

PIN INSERT

ROB

NUMBER



FSCA1871150A 200 4.0 3000 3000 7.9FSCA1871200A 200 5.0 3000 3000 32




FSCA1871150A 0.015 380 0.005 0.034 27FSCA1871200A 0.020 510 0.009 0.034 27

MATERIALSPART MATERIAL SPECIFICATIONBody 303 CRES QQ-S-763CPin 17-4PH CRES AMS 5643

Installation/Extraction Tool Set Part Number ................... CUTA1870128CReplacement Pin Part Number ........................................ JEHA1870003AInstallation and Extraction Procedures ............................ See pages L21–L23* Collapse . . . first sign of deformation when clogged.

Finish: All CresParts Passivatedper QQ-P-35.Pins are pre-waxed.Do not degrease.Do not lubricate.

CAD815

38

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FSLA GROUP

Lee Safety Screens

39

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L-4SAFETY SCREENS

❑ Easily locks into position

❑ Low cost installation hole,no support shoulder required

❑ Unique, high capacity screen design




Lee Safety Screens

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187 L-4 Safety Screen



FSLA1870040A 85 4.0 500 150 5.4FSLA1870060A 85 6.0 500 200 11FSLA1870080A 85 8.0 500 350 21FSLA1870150A 85 8.0 500 350 131

ROB

NUMBER




FSLA1870040A 0.004 100 0.06 0.22 5100FSLA1870060A 0.006 150 0.06 0.22 2250FSLA1870080A 0.008 200 0.06 0.22 1250FSLA1870150A 0.015 380 0.08 0.22 450

MATERIALSPART MATERIAL SPECIFICATIONBody 416 CRES QQ-S-763CPin 420 CRES QQ-S-763



Installation/Extraction Tool Set Part Number ................... CUTA1870528CInstallation and Extraction Procedures ............................ See pages L33–L34* Collapse . . . first sign of deformation when clogged.

CAD830

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FSLA2810040A 40 10 450 150 9.5FSLA2810060A 40 10 500 150 20FSLA2810080A 40 10 500 200 34FSLA2810150A 40 10 500 175 247

ROB

NUMBER




FSLA2810040A 0.004 100 0.11 0.37 9000FSLA2810060A 0.006 150 0.11 0.37 4000FSLA2810080A 0.008 200 0.10 0.37 2000FSLA2810150A 0.015 380 0.15 0.37 850

MATERIALSPART MATERIAL SPECIFICATIONBody 416 CRES QQ-S-763CPin 420 CRES QQ-S-763



Installation/Extraction Tool Set Part Number ................... CUTA2810528CInstallation and Extraction Procedures ............................ See pages L33–L34* Collapse . . . first sign of deformation when clogged.

281 L-4 Safety ScreenCAD835

42

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FSSA GROUP

Lee Safety Screens

43

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SPRING RETAINEDSAFETY SCREENS

❑ Easily installed and extracted





Lee Safety Screens

44

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Safety Screen



FSSA1700040A 250 2.0 N/A 750 1.6FSSA1700060A 250 2.0 N/A 1100 3.6FSSA1700080A 250 2.5 N/A 3000 4.2FSSA1700150A 250 2.5 N/A 2200 44

ROB

NUMBER

MATERIALSPART MATERIAL SPECIFICATIONSpring 302 CRES QQ-W-423Screen 304L CRES ASTM A 666

Base Washer 304L CRES ASTM A 666Braze Silver Alloy AMS 4774




FSSA1700040A 0.004 100 0.019 0.062 1500FSSA1700060A 0.006 150 0.020 0.062 700FSSA1700080A 0.008 200 0.014 0.062 250FSSA1700150A 0.015 380 0.026 0.062 150


Installation/Extraction Tool Set Part Number ................... CUTA1700128CInstallation and Extraction Procedures ............................ See page L35* Collapse . . . first sign of deformation when clogged.

SpringRetained

CAD820

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Twis Safety Screen

ROB

NUMBER



FSSA1870040B 80 4.0 N/A 125 5.4FSSA1870060B 80 6.0 N/A 150 11FSSA1870080B 80 8.0 N/A 150 21FSSA1870150B 80 8.0 N/A 300 131




FSSA1870040B 0.004 100 0.06 0.22 5100FSSA1870060B 0.006 150 0.07 0.22 2250FSSA1870080B 0.008 200 0.06 0.22 1250FSSA1870150B 0.015 380 0.08 0.22 450

MATERIALSPART MATERIAL SPECIFICATIONSpring 17-7PH CRES AMS 5678Post 303 CRES QQ-S-763C



Installation/Extraction Tool Set Part Number ................... CUTA1870228CInstallation and Extraction Procedures ............................ See page L35* Collapse . . . first sign of deformation when clogged.

CAD825

47

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Lee Safety Screens

HI-BAR SAFETY SCREENS

Flange Mounted

Boss Mounted

Boss Access

Rosán Adapter

48

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FSHF GROUP

Lee Safety Screens

49

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Lee Safety Screens

FLANGE MOUNTEDHI-BAR

SAFETY SCREENS

❑ Rugged, high strength,flange mount design

❑ No burst or collapseat 7500 psid fully clogged

❑ Machined and drilled from solid bar stock

❑ Stainless steel construction


❑ High contamination carrying capacityfor maximum protection

❑ Low Lohm, high flow capacity


50

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HI-BAR 130Flange Mount Safety Screen

ROBNUMBER

PERFORMANCELEE LOHM BURST / COLLAPSE

PART RATE PRESSURENUMBER (nom.) psid (min.)

FSHF1300010A 350 7500 0.2FSHF1300015A 350 7500 0.6FSHF1300020A 300 7500 0.8

FSHF1300040A 250 7500 7.3

SPECIFICATIONS (nom.)LEE HOLE HOLE OPEN TOTAL NUMBER

PART SIZE SIZE AREA AREA OFNUMBER in µm in2 in2 HOLES

FSHF1300010A 0.004 100 0.003 0.02 200FSHF1300015A 0.006 150 0.003 0.02 110FSHF1300020A 0.008 200 0.003 0.02 45FSHF1300040A 0.015 380 0.004 0.02 25


Screen 15-5PH CRES AMS 5659 QQ-P-35

CAD860

51

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AMS 5604or AMS 5643


Screen 17-4PH CRES AMS QQ-P-35



FSHF2300007A 0.003 75 0.007 0.06 990FSHF2300010A 0.004 100 0.010 0.06 795FSHF2300015A 0.006 150 0.010 0.06 350FSHF2300020A 0.008 200 0.010 0.06 200FSHF2300040A 0.015 380 0.013 0.06 70

ROBNUMBER



FSHF2300007A 120 7500 0.4FSHF2300010A 95 7500 0.8FSHF2300015A 95 7500 1.8FSHF2300020A 95 7500 3.4

FSHF2300040A 90 7500 20

CAD865

52

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Safety ScreenHI-BAR 330Flange Mount

AMS 5604or AMS 5643


Screen 17-4PH CRES QQ-P-35




ROBNUMBER



FSHF3300007A 50 7500 0.8FSHF3300010A 50 7500 1.9FSHF3300015A 45 7500 4.0FSHF3300020A 45 7500 7.4

FSHF3300040A 45 7500 46

CAD861

53

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FSHF3800007A 30 7500 1.2FSHF3800010A 30 7500 2.6FSHF3800015A 30 7500 5.6FSHF3800020A 30 7500 10FSHF3800040A 30 7500 71






ROBNUMBER

AMS 5604or AMS 5643

CAD862

54

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FSHF4950010A 20 7500 5.1FSHF4950015A 20 7500 11FSHF4950020A 20 7500 20

FSHF4950040A 20 7500 115

ROBNUMBER

AMS 5604or AMS 5643

CAD863

55

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FSHF6700010A 10 7500 9.3FSHF6700015A 10 7500 20FSHF6700020A 10 7500 37FSHF6700040A 10 7500 230






ROBNUMBER

AMS 5604or AMS 5643


CAD864

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FSHB GROUP

Lee Safety Screens

57

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Lee Safety Screens

BOSS MOUNTEDHI-BAR

SAFETY SCREENS

❑ Rugged, high strength, boss mounteddesign



❑ 15-5PH stainless steel construction





58

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FSHB2500107A 60 7500 0.7FSHB2500110A 60 7500 1.7FSHB2500115A 60 7500 3.6FSHB2500120A 60 7500 6.7FSHB2500140A 60 7500 40



FSHB2500107A 0.003 75 0.014 0.11 1980FSHB2500110A 0.004 100 0.020 0.11 1590FSHB2500115A 0.006 150 0.020 0.11 700FSHB2500120A 0.008 200 0.020 0.11 395FSHB2500140A 0.015 380 0.025 0.11 140


Screen 15-5PH CRES AMS 5659 AMS QQ-P-35

ROBNUMBER

HI-BAR 250Boss Mount Safety Screen

CAD878

59

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Safety Screen


Screen 15-5PH CRES AMS 5659 AMS QQ-P-35






FSHB3120107A 45 7500 1.0FSHB3120110A 45 7500 2.3FSHB3120115A 45 7500 3.1FSHB3120120A 45 7500 9.1FSHB3120140A 45 7500 59

ROBNUMBER

HI-BAR 312Boss Mount

CAD879

60

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FSHB4370107A 18 7500 2.7FSHB4370110A 18 7500 5.9FSHB4370115A 18 7500 13FSHB4370120A 18 7500 23FSHB4370140A 18 7500 148






ROBNUMBER


CAD870

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Safety Screen





FSHB4370207A 0.003 75 0.08 0.62 11 320FSHB4370210A 0.004 100 0.12 0.62 9 550FSHB4370215A 0.006 150 0.12 0.62 4 245FSHB4370220A 0.008 200 0.12 0.62 2 390FSHB4370240A 0.015 380 0.15 0.62 850



FSHB4370207A 18 7500 4.2FSHB4370210A 18 7500 10FSHB4370215A 18 7500 22FSHB4370220A 18 7500 40FSHB4370240A 18 7500 247

ROBNUMBER


CAD871

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FSHB5620107A 0.003 75 0.10 0.76 14 150FSHB5620110A 0.004 100 0.15 0.76 11 935FSHB5620115A 0.006 150 0.15 0.76 5 305FSHB5620120A 0.008 200 0.15 0.76 2 985FSHB5620140A 0.015 380 0.19 0.76 1 075



ROBNUMBER


CAD872

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Safety Screen





FSHB5620207A 0.003 75 0.16 1.22 22 635FSHB5620210A 0.004 100 0.24 1.22 19 100FSHB5620215A 0.006 150 0.24 1.22 8 490FSHB5620220A 0.008 200 0.24 1.22 4 775FSHB5620240A 0.015 380 0.30 1.22 1 700




ROBNUMBER


CAD873

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FSHB6871115A 6 7500 49FSHB6871120A 6 7500 90FSHB6871140A 6 7500 560

Safety ScreenHI-BAR 687Boss Mount



FSHB6871115A 0.006 150 0.27 1.37 9550FSHB6871120A 0.008 200 0.27 1.37 5370FSHB6871140A 0.015 380 0.34 1.37 1925



ROBNUMBER

CAD876

65

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FSHB7500115A 0.006 150 .31 1.57 10 965FSHB7500120A 0.008 200 .31 1.57 6 165FSHB7500140A 0.015 380 .39 1.57 2 210





FSHB7500115A 5 7500 56FSHB7500120A 5 7500 104FSHB7500140A 5 7500 643

ROBNUMBER


CAD874

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FSHB8121115A 4 7500 70FSHB8121120A 4 7500 131



FSHB8121115A 0.006 150 0.39 1.96 13 795FSHB8121120A 0.008 200 0.39 1.96 7 760



ROBNUMBER

CAD877

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Safety ScreenHI-BAR 875 Boss Mount





FSHB8750115A 0.006 150 0.42 2.12 14 855FSHB8750120A 0.008 200 0.42 2.12 8 355



FSHB8750115A 4 7500 76FSHB8750120A 4 7500 141

ROBNUMBER

CAD875

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H


PART RATE PRESSURENUMBER (nom.) bar (min.)

FSHB1003107M 20 520 2.1FSHB1003110M 20 520 4.8FSHB1003115M 20 520 10FSHB1003120M 20 520 19FSHB1003140M 20 520 119


PART SIZE SIZE AREA AREA OFNUMBER in µm mm2 mm2 HOLES

FSHB1003107M 0.003 75 26 190 5700FSHB1003110M 0.004 100 37 190 4565FSHB1003115M 0.006 150 37 190 2030FSHB1003120M 0.008 200 37 190 1140FSHB1003140M 0.015 380 47 190 410



ROBNUMBER

Safety ScreenHI-BAR MJ10Boss Mount

CAD880

69

H









ROBNUMBER


CAD881

70

H

HI-BAR MJ12Boss Mount Safety Screen









ROBNUMBER

CAD882

71

H






FSHB1203207M 0.003 75 65 490 14 255FSHB1203210M 0.004 100 95 490 11 720FSHB1203215M 0.006 150 95 490 5 210FSHB1203220M 0.008 200 95 490 2 930FSHB1203240M 0.015 380 120 490 1 050



FSHB1203207M 15 520 5.4FSHB1203210M 15 520 12FSHB1203215M 15 520 27FSHB1203220M 15 520 50FSHB1203240M 15 520 305

ROBNUMBER

CAD883

72

H




FSHB1403110M 11 520 10FSHB1403115M 11 520 23FSHB1403120M 11 520 42FSHB1403140M 11 520 255



FSHB1403110M 0.004 100 81 410 9995FSHB1403115M 0.006 150 81 410 4440FSHB1403120M 0.008 200 81 410 2500FSHB1403140M 0.015 380 100 410 875



ROBNUMBER

CAD884

73

H






FSHB1603115M 0.006 150 120 590 6580FSHB1603120M 0.008 200 120 590 3700FSHB1603140M 0.015 380 150 590 1315



FSHB1603115M 8 520 33FSHB1603120M 8 520 61FSHB1603140M 8 520 380

ROBNUMBER

CAD885

74

H




FSHB1803115M 6 520 47FSHB1803120M 6 520 88FSHB1803140M 6 520 535



FSHB1803115M 0.006 150 170 860 9320FSHB1803120M 0.008 200 170 860 5245FSHB1803140M 0.015 380 210 860 1840



ROBNUMBER

CAD886

75

H






FSHB2003115M 0.006 150 230 1160 12 610FSHB2003120M 0.008 200 230 1160 7 095



FSHB2003115M 5 520 64FSHB2003120M 5 520 120

ROBNUMBER

CAD887

76

H




FSHB2203115M 4 520 77FSHB2203120M 4 520 140



FSHB2203115M 0.006 150 270 1400 14 805FSHB2203120M 0.008 200 270 1400 8 325



ROBNUMBER

CAD888

77

H

Notes

78

H

Lee Safety ScreensBASA, BASK GROUP

79

H

HI-BAR BOSS ACCESSSAFETY SCREENS

❑ Unique, high strength, one-piece,threaded design

❑ Easy access for inspection and cleaning



❑ 15-5PH and 17-4PHstainless steel construction

❑ MS & Rosán Adapter fitting ends available



Lee Safety Screens

80

H



Safety ScreenHI-BAR 312 MSBoss Access



BASA3121100A 0.004 100 0.04 0.19 2900BASA3121151A 0.006 150 0.04 0.19 1300BASA3121201A 0.008 200 0.04 0.19 730BASA3121402A 0.015 380 0.05 0.19 300

ROBNUMBER



BASA3121100A 60 7500 3.1BASA3121151A 60 7500 6.6BASA3121201A 60 7500 12BASA3121402A 60 7500 87

CAD850

81

H



CAD851

HI-BAR 437 MSBoss Access Safety Screen



BASA4371100A 0.004 100 0.09 0.44 6800BASA4371151A 0.006 150 0.09 0.44 3100BASA4371201A 0.008 200 0.09 0.44 1700BASA4371402A 0.015 380 0.13 0.44 710



BASA4371100A 20 7500 7.2BASA4371151A 20 7500 16BASA4371201A 20 7500 29BASA4371402A 20 7500 207

ROBNUMBER

82

H

HI-BAR 562 MSBoss Access Safety Screen



BASA5621101A 0.004 100 0.15 0.78 12 000BASA5621151A 0.006 150 0.15 0.78 5 400BASA5621201A 0.008 200 0.15 0.78 3 000BASA5621402A 0.015 380 0.21 0.78 1 200



BASA5621101A 12 7500 13BASA5621151A 12 7500 28BASA5621201A 12 7500 51BASA5621402A 12 7500 349

ROBNUMBER



CAD852

83

H

HI-BAR 312 ASBoss Access Safety Screen

MATERIALSPART MATERIAL SPECIFICATION PASSIVATE

Screen 17-4PH CRES AMS 5643 QQ-P-35Locking Ring A286 AMS 5731 QQ-P-35



BASK3121100A 0.004 100 0.03 0.16 2385BASK3121151A 0.006 150 0.03 0.16 1060BASK3121201A 0.008 200 0.03 0.16 595BASK3121402A 0.015 380 0.04 0.16 225



BASK3121100A 60 7500 2.6BASK3121151A 60 7500 5.4BASK3121201A 60 7500 10BASK3121402A 60 7500 65

ROBNUMBER

CAD853

84

H



BASK4371100A 20 7500 6.7BASK4371151A 20 7500 14BASK4371201A 20 7500 27BASK4371402A 20 7500 164



Safety ScreenHI-BAR 437 ASBoss Access



BASK4371100A 0.004 100 0.08 0.40 6365BASK4371151A 0.006 150 0.08 0.40 2830BASK4371201A 0.008 200 0.08 0.40 1590BASK4371402A 0.015 380 0.10 0.40 565

ROBNUMBER

CAD854

85

H



BASK5621101A 12 7500 12BASK5621151A 12 7500 25BASK5621201A 12 7500 47BASK5621402A 12 7500 297



Safety ScreenHI-BAR 562 ASBoss Access



BASK5621101A 0.004 100 0.14 0.72 11 140BASK5621151A 0.006 150 0.14 0.72 4 950BASK5621201A 0.008 200 0.14 0.72 2 785BASK5621402A 0.015 380 0.18 0.72 1 020

ROBNUMBER

CAD855

86

H

FSIJ, FSIK, FSIL GROUP

Lee Safety Screens

87

H

HI-BARSAFETY SCREENS

IN ROSÁN ADAPTERS

❑ Specially designed Rosán Adapterswith integral screens

❑ 100% proof pressure tested

❑ 15-5PH stainless steelhigh strength screen design


❑ Lightweight titanium adapter

❑ Dynamic Beam Seal andFlareless Tube ends available

Lee Safety Screens

88

H

HI-BAR Dynamic Beam SealSafety Screen Adapter

CAD950

MATERIALSPART MATERIAL SPECIFICATION FINISH

Adapter 6AL-4V Ti AMS 4967 MIL-L-8937Locking Ring A286 CRES AMS 5731 QQ-P-35




FSIK0604040A 35 7500 3.5FSIK0604060A 35 7500 7.6FSIK0604080A 35 7500 14FSIK0604150A 35 7500 90

ROBNUMBER



FSIK0604040A 0.004 100 0.04 0.23 3340FSIK0604060A 0.006 150 0.04 0.23 1485FSIK0604080A 0.008 200 0.04 0.23 835FSIK0604150A 0.015 380 0.06 0.23 310

89

H


Adapter 6AL-4V Ti AMS 4967 MIL-L-8937Locking Ring A286 CRES AMS 5731 QQ-P-35




FSIK0806040A 0.004 100 0.09 0.50 7320FSIK0806060A 0.006 150 0.09 0.50 3255FSIK0806080A 0.008 200 0.09 0.50 1830FSIK0806150A 0.015 380 0.12 0.50 680



FSIK0806040A 20 7500 7.8FSIK0806060A 20 7500 17FSIK0806080A 20 7500 31FSIK0806150A 20 7500 198

ROBNUMBER


CAD952

90

H



FSIK1008060A 10 7500 25FSIK1008080A 10 7500 46FSIK1008150A 10 7500 294



FSIK1008060A 0.006 150 0.14 0.74 4810FSIK1008080A 0.008 200 0.14 0.74 2705FSIK1008150A 0.015 380 0.18 0.74 1010


Adapter 6AL-4V Ti AMS 4967 MIL-L-8937Locking Ring A286 AMS 5731 QQ-P-35


ROBNUMBER


CAD954

91

H






FSIK1210060A 0.006 150 0.28 1.51 9825FSIK1210080A 0.008 200 0.28 1.51 5525FSIK1210150A 0.015 380 0.36 1.51 2050



FSIK1210060A 8 7500 50FSIK1210080A 8 7500 93FSIK1210150A 8 7500 596

ROBNUMBER


CAD956

92

HSPECIFICATIONS (nom.)



FSIL0604040A 0.004 100 0.04 0.23 3340FSIL0604060A 0.006 150 0.04 0.23 1485FSIL0604080A 0.008 200 0.04 0.23 835FSIL0604150A 0.015 380 0.06 0.23 310




ROBNUMBER

HI-BAR Flareless TubeSafety Screen Adapter



FSIL0604040A 35 7500 3.5FSIL0604060A 35 7500 7.6FSIL0604080A 35 7500 14FSIL0604150A 35 7500 90

CAD960

93

H






FSIL0806040A 0.004 100 0.09 0.50 7320FSIL0806060A 0.006 150 0.09 0.50 3255FSIL0806080A 0.008 200 0.09 0.50 1830FSIL0806150A 0.015 380 0.12 0.50 680



FSIL0806040A 20 7500 7.8FSIL0806060A 20 7500 17FSIL0806080A 20 7500 31FSIL0806150A 20 7500 198

ROBNUMBER


CAD962

94

HSPECIFICATIONS (nom.)



FSIL1008060A 0.006 150 0.14 0.74 4810FSIL1008080A 0.008 200 0.14 0.74 2705FSIL1008150A 0.015 380 0.18 0.74 1010



FSIL1008060A 10 7500 25FSIL1008080A 10 7500 46FSIL1008150A 10 7500 294




ROBNUMBER


CAD964

95

H






FSIL1210060A 8 7500 50FSIL1210080A 8 7500 93FSIL1210150A 8 7500 596



FSIL1210060A 0.006 150 0.28 1.51 9825FSIL1210080A 0.008 200 0.28 1.51 5525FSIL1210150A 0.015 380 0.36 1.51 2050

ROBNUMBER


CAD966

96

H

HI-BAR Metric Dynamic Beam SealSafety Screen Adapter



FSIJ1206040A 35 520 3.5FSIJ1206060A 35 520 7.6FSIJ1206080A 35 520 14FSIJ1206150A 35 520 90



FSIJ1206040A 0.004 100 27 148 3340FSIJ1206060A 0.006 150 27 148 1485FSIJ1206080A 0.008 200 27 148 835FSIJ1206150A 0.015 380 35 148 310




ROBNUMBER

CAD970

97

H









FSIJ1208040A 35 520 3.5FSIJ1208060A 35 520 7.6FSIJ1208080A 35 520 14FSIJ1208150A 35 520 90


ROBNUMBER

CAD971

98

H



FSIJ1610040A 20 520 7.8FSIJ1610060A 20 520 17FSIJ1610080A 20 520 31FSIJ1610150A 20 520 198








ROBNUMBER

CAD972

99

H






FSIJ1812060A 0.006 150 90 477 4810FSIJ1812080A 0.008 200 90 477 2705FSIJ1812150A 0.015 380 116 477 1010



FSIJ1812060A 10 520 25FSIJ1812080A 10 520 46FSIJ1812150A 10 520 294


ROBNUMBER

CAD973

100

H











ROBNUMBER

CAD974

100

101

H

101











ROBNUMBER

CAD975

102

H

102

The Lee Company is pleased to design any special safetyscreen product to fill your needs. In fact, approximately 50% ofour screens are special products designed to meet the require-ments of a specific application.

Safety ScreensSpecialProducts

103

H

103

The Lee Company's new capabilities of machining and drillingholes in shapes from stainless steel yield one piece HI-BARsafety screens. The result – outstanding high strength designseliminating multiple component assemblies.

Safety ScreensSpecialProducts

I

Piloting Solenoid Valve

1

I


❑ Ultra-Compact Design SavesSpace and Weight

❑ High Performance-EfficientForce/Stroke Relationship

❑ Low Power Consumption

❑ Positive Pull-In At HighTemperatures and Low Pressures

❑ Lee MultiSeal™ Saves Space,Weight and Machining Costs

❑ O-Rings and Back-Up Rings areEliminated with Lee MultiSeal

❑ Reliable, Low Leakage, MiniatureValve Element

2

I

Piloting Solenoid ValveTABLE OF CONTENTS

Single Coil Normally Closed and Normally OpenSolenoid Valves 3000, 4000 & 5000 psi ............................. 4 – 7

Dual Coil Normally Closed and Normally OpenSolenoid Valves 3000, 4000 & 5000 psi ........................... 8 – 11

The Lee Miniature Piloting Solenoid Valve was designed anddeveloped for use in aerospace hydraulic and fuel systems,oil tool applications, and other challenging high pressureapplications. Incorporating innovative design and advancedtechnology it has set a new bench mark in space and weightsavings, and power consumption. The lightest version weighsunder 0.14 lbs. (2.3 oz.) and uses only 7.8 watts at 28 Vdc.Each subcomponent and manufacturing process has beenoptimized to ensure a design with the highest performance,longest life, and highest reliability – all within the smallestenvelope possible.

MAGNETIC CIRCUITExtensive use of magnetic finite element analysis hasresulted in a low power consumption solenoid force motorwith an unusually flat force/stroke relationship. This ensurespositive "Pull-In" even under the worst case conditions ofdegraded supply pressure and high ambient temperature,while also exceeding a stringent minimum "Drop-Out"specification.

HYDRAULIC PILOT VALVEThe miniature valve element is based on the proven low-leakage, high reliability designs used, extensively, in Leecheck and shuttle valves. The valve is protected by an integralsafety screen (hole size .004 inches) and has demonstratedconsistent performance over 2,500,000 cycles during quali-fication testing.

LEE MULTISEAL*The MultiSeal™ is a new sealing concept based on thecontrolled expansion of a cylindrical polyamide-imide sealing

3

I

element, eliminating conventional O-Rings and Anti-Extru-sion Rings. The MultiSeal™ radically simplifies port layout,offers significant space savings, reduced machining costsand higher reliability than traditional sealing methods. Tomeet the rigorous demands of the aerospace industry, theMultiSeal has completed extensive qualification testing. Thisincluded 10,000,000 impulse cycles (0-7500-0 PSI) at 275°F.Full details have been published in SAE paper #912134"Total Flexibility in Cartridge Valve Porting Through Innova-tive Sealing Technology".

STANDARD DESIGNSNormally closed and normally open, 2 position, 3-way sole-noid valves are offered as standard versions in single anddual coil 28 Vdc designs. Each of these are available for 3000psi, 4000 psi, or 5000 psi systems with Lohm rates of 1800and 2200 Lohms. They are designed for operation in atemperature range of -65°F to 275°F. All versions utilize athreaded captive retainer for easy installation and extractionand have either lead wires or an integral MIL-C-38999connector.

SPECIAL DESIGNSThe Lee Company also offers special solenoid valve designsfor 12 to 50 volt nominal systems. Higher pressure versions(greater than 5000 psi) and lower pressure versions (lessthan 3000) psi are also available, as are versions offeringgreater flow than the 1800 Lohm piloting designs. Highertemperature solenoid valves operating up to ambient tem-peratures of 392°F (200°C) can also be supplied. Otheravailable options include integral diodes and other specialconnector types.


*Patented

4

ILEE PART NUMBER RATED

NORMALLY CLOSED NORMALLY OPEN PRESSURESDBB21310*3A** SDBB21310*2A** 3000 psiSDBB21310*3E** SDBB21310*2E** 3000 psiSDBB21311*3A** SDBB21311*2A** 4000 psiSDBB21311*3E** SDBB21311*2E** 4000 psiSDBB21312*3A** SDBB21312*2A** 5000 psiSDBB21312*3E** SDBB21312*2E** 5000 psi


Replacement MultiSeal Part Number ...... SDBB2130108A orSDBB2130208A (5000psi)

Recommended Installation Torque ......... 25 ft-lbs

*Test Fluid: O = Skydrol, 1 = MIL-H-5606** A = Lead Wire Version, E = Connector Version

CAD450

CAD455

5

I


6

I

FINISH

CRES PARTS: Passivate/QQ-P-35SOFT MAGNETIC MATERIAL: Nickel Plate/AMS 2404RETAINER: Anodize/MIL-A-8625 Type IIINSULATION: PS 816

MATERIALSBODY AND BALL SEAT: 15-5 PH CRES/AMS 5659MULTISEAL: Polyamide-Imide/MIL-P-46179BALL AND PIN: 440C CRES/AMS 5630SPRING: 302 CRES/AMS 5688FLANGES, PLUNGERS AND COVER:

Si Iron BFM/ASTM-A867FILTER SCREEN ASSY: 304L CRES/QQ-S-766BOBBIN: 304L CRES/QQ-S-763SPACER: 302 CRES/QQ-S-766SHAFT: 440C CRES/QQ-S-763RETAINER: 2024 T-351 AL/QQ-A-225/6RETAINING RING: 302 CRES/ASTM A313COIL: Copper Magnet Wire J-W-1177/15 CL220 M2LEAD WIRE: 22 AWG/MIL-W-22759/11FCONNECTOR: Shell: 304L, Pins: Gold Plated,

Seal: Fluorosilicone ElastomerSHRINK TUBE: MIL-I-23053/8 & /12INSULATION TAPE: Kapton, Polyimide/MIL-P-46112BSOLDER: Sn95/QQ-S-571BRAZE: AMS 4774POTTING COMPOUND: Stycast 2762FT, Catalyst 17


7

I

Piloting Solenoid ValveOPERATING TEMPERATURE:

Ambient: -65°F to 275°FFluid: -65°F to 275°F

LEAKAGE:Internal: 2 cc/minute max. at rated pressureExternal: 0 cc

LOHM RATES:3000 psi rated valve: 1800 Lohms4000 psi rated valve: 2200 Lohms5000 psi rated valve: 2200 Lohms

ELECTRICAL:Current Drain: 0.28 amps at 28 Vdc at 70°F (7.8 Watts)Max. Operating Voltage: 32.2 VdcPull-In Voltage: 18 Vdc max. at 275°F and rated pressureMinimum Drop Out Voltage:

3.0 Vdc at 70°F and rated pressureResistance: 92-108 Ohms at 70°FResponse Time:

Pull-In (at rated pressure):0.015 seconds max., normally closed version0.040 seconds max., normally open version

Drop-out (at rated pressure):0.015 seconds max., normally open version0.035 seconds max., normally closed version

Stabilization Temperature: 225°F max. with 28 Vdcapplied, suspended in 70°F to 110°F still air,continuously energized

Insulation Resistance: 100 Megohms min. with 500Vdc applied for 60 seconds

Dielectric Strength: 1500 Vrms min. at 60 Hz for 60 seconds

SCREEN HOLE SIZE:.004 inches nominal

WEIGHT:.14 lbs. max. lead wire style.15 lbs. max. connector style

8

I


DUAL COIL

LEE PART NUMBER RATEDNORMALLY CLOSED NORMALLY OPEN PRESSURE

SDBB21320*3A SDBB21320*2A 3000 psi

SDBB21321*3A SDBB21321*2A 4000 psi

SDBB21322*3A SDBB21322*2A 5000 psi

Replacement MultiSeal Part Number ... SDBB2130108A orSDBB2130208A (5000psi)

Recommended Installation Torque ...... 25 ft-lbs

*Test Fluid: O = Skydrol, 1 = MIL-H-5606

CAD460

9

I

Piloting Solenoid ValveDUAL COIL

10

I

FINISH

CRES PARTS: Passivate/QQ-P-35SOFT MAGNETIC MATERIAL: Nickel Plate/AMS 2404RETAINER: Anodize/MIL-A-8625 Type IIINSULATION: PS 816

MATERIALSBODY AND BALL SEAT: 15-5 PH CRES/AMS 5659MULTISEAL: Polyamide-Imide/MIL-P-46179BALL AND PIN: 440C CRES/AMS 5630SPRING: 302 CRES/AMS 5688FLANGES, PLUNGERS AND COVER: Si Iron BFM/ASTM-A867FILTER SCREEN ASSY: 304L CRES/QQ-S-766BOBBIN: 22-13-5/AMS 5764SPACER: 302 CRES/QQ-S-766SHAFT: 440C CRES/QQ-S-763RETAINER: 2024 T-351 AL/QQ-A-225/6RETAINING RING: 302 CRES/ASTM A313COIL: Copper Magnet Wire J-W-1177/15 CL220 M2SEPARATOR: ARAMID/MIL-I-24204LEAD WIRE: 22 AWG/MIL-W-22759/11FSHRINK TUBE: MIL-I-23053/8 & /12INSULATION TAPE: Kapton, Polyimide/MIL-P-46112BSOLDER: Sn95/QQ-S-571BRAZE: AMS 4774POTTING COMPOUND: Stycast 2762FT, Catalyst 17


11

I


OPERATING TEMPERATURE:Ambient: -65°F to 275°FFluid: -65°F to 275°F

LEAKAGE:Internal: 2 cc/minute max. at rated pressureExternal: 0 cc

LOHM RATES:3000 psi rated valve: 1800 Lohms4000 psi rated valve: 2200 Lohms5000 psi rated valve: 2200 Lohms

ELECTRICAL:Current Drain: 0.35 amps at 28 Vdc at 70°F (9.8 Watts)

Max. Operating Voltage: 32.2 VdcPull-In Voltage: 18 Vdc max. at 275°F and rated

pressure to either coilMinimum Drop Out Voltage: Both coils energized

1.5 Vdc at 70°F and rated pressureResistance: 74-86 Ohms at 70°F

Response Time:Pull-In (at rated pressure):

0.015 seconds max., normally closed version0.040 seconds max., normally open version

Drop-out (at rated pressure):0.015 seconds max., normally open version0.035 seconds max., normally closed version

Stabilization Temperature: 285°F max. with 28 Vdcapplied to both coils, suspended in 70°F to 110°F still air,continuously energized

Insulation Resistance: 100 Megohms min. with 500Vdc applied for 60 seconds

Dielectric Strength: 1500 Vrms min. at 60 Hz for 60 seconds

SCREEN HOLE SIZE:.004 inches nominal

WEIGHT:.20 lbs. max.

J

Lee Line Mounts

1

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UNIONS❑ Specially Designed to Accept

Most Lee Inserts

❑ Available in Three Styles:Flared, Flareless andDynamic Beam Seal

❑ Stainless Steel or TitaniumConstruction

❑ Distinctive Appearance andPermanent Marking

LINE MOUNT❑ Axial Visco Jets in

Convenient Line Mount

❑ 43, 68, and 14 SeriesVisco Jets in Line Mount

❑ Hi-Q Line Mount Chek Valve

ROSÁN ADAPTERS❑ Integral Restrictors, Safety

Screens and Valves inRosán Adapters

❑ Constructed using Light-weight Titanium Adapters

❑ Unique Blue Locking RingMakes Identification Easy

Lee Line Mounts

2

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TABLE OF CONTENTS

Lee Inserts In UnionsDash 4 Unions ................................................. 6 – 8Dash 6 Unions ............................................... 9 – 11Dash 4 to Dash 6 Unions .................................... 12

Lee Line Mount ComponentsAxial Visco Jets ........................................... 13 – 1443, 68, 14 Series Visco Jets ........................ 15 – 17Hi-Q Chek Valve .......................................... 18 – 19

Lee Components in Rosán Adapters

Lee RestrictorsDynamic Beam Seal Tube End ................ 20 – 23Flareless Tube End .................................. 24 – 27Metric Dynamic Beam Seal Tube End ..... 28 – 31

Lee Inlet Safety Screens ............................. 32 – 33

Lee ValvesInlet Cheks

Dynamic Beam Seal Tube End ............ 34 – 35Flareless Tube End .............................. 36 – 37Metric Dynamic Beam Seal Tube End ... 38 – 39

Return CheksDynamic Beam Seal Tube End ............ 40 – 41Flareless Tube End .............................. 42 – 43Metric Dynamic Beam Seal Tube End . 44 – 45

Flow ControlsDynamic Beam Seal Tube End ............ 46 – 47Flareless Tube End .............................. 48 – 49Metric Dynamic Beam Seal Tube End ... 50 – 51

Introduction Line Mounts

3

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LEE UNIONSVirtually every .187 , .250 and .281 inch diameter Leeinsert is offered already installed in appropriately sizedflared, flareless or dynamic beam seal unions. Theseunions are made of 304 stainless steel (code "J" inmilitary standards) or 6AL-4V Titanium (code "T"). AllLee Unions have a unique hex wrench arrangement todistinguish them from simple unions and permanentexternal marking to identify the insert.

The configuration of these unions has been carefullychosen to accommodate most of the .187, .250 and .281inch Lee inserts, and yet maintain both minimum enve-lope and weight. These units incorporate the high-root-radius UNJF threads to minimize stress concentrationswith Class 3A tolerances. All fitting-end dimensions are,except for the internal diameters, in general accordancewith the appropriate AS33514E4 and E6, AS4395E04and E06, and MIL-F-85720/1-04 and –06 specifications.

Every Lee Union with insert installed is proof pressuretested; flared and flareless to 6000 psid and dynamicbeam seal to 16,000 psid. Maximum working differentialpressure is a function of the particular Lee insert speci-fied (refer to the appropriate insert section).

LINE MOUNT RESTRICTORSAll of the standard cartridge 43, 68, and 14 Series ViscoJets, and all of the standard Axial Visco Jets, are alsoavailable built into unions with AS4395E04 flared ends.Different style or size ends are available on a specialorder basis.


4

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LEE COMPONENTS IN ROSAN ADAPTERSVirtually all Lee miniature components, including checkvalves, flow controls, restrictors and screens, are avail-able already installed or built into Rosán Adapters. Designengineers can now take advantage of the unused spacein their Rosán Adapters to save space and weight in theirmanifolds.

The Lee Company offers all these products in RosánAdapters with three different tube ends: dynamic beamseal, flareless and metric dynamic beam seal (8° 30' lip-seal). Dynamic beam seal and flareless tube versionsrange in size from –4 to –10 (1/4 to 5/8 inch) and metriclip-seal versions range from 6 to 16mm nominal tubeO.D. Titanium has been selected as the adapter materialfor the lowest possible weight (see chart on oppositepage). All Rosán Adapters containing Lee componentshave blue lock rings to distinguish them from ordinaryAdapters, and permanent external marking to identify thefunction of the product inside.

LEE RESTRICTORSLee miniature restrictors are available in both one-way(flow controls) and two-way configurations. Lee Flow Con-trols are built directly into Rosán Adapters for low pressuredrop in the free flow direction. The two-way restrictorsare Lee 5k Jets, Lee High Pressure High Watt Jets,Bender Jets, and Visco Jets installed as inserts in RosánAdapters.

INLET SCREENSLee Inlet Safety Screens feature all stainless steelconstruction. They are rated for use in 5000 psi systemsand will withstand a proof pressure of 7500 psi in eitherdirection without burst or collapse when fully clogged.

´

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Lee Inlet Safety Screens have large open area for maximum dirtcarrying capacity and good low temperature performance.Additionally, the large open area guarantees the lowest pos-sible pressure drop under all flow conditions.

LEE CHEK VALVESMiniature Lee Chek valves are built directly into Rosán Adaptersfor the lowest possible pressure drop, and are available in bothinlet and return line configurations. The inlet Cheks are availablewith an inlet safety screen that can be easily removed for cleaningor inspection. Simply reinstall the cleaned screen with a new pin,without removing the adapter.


RESTRICTORTUBE INLET RETURN FLOW INLETSIZE CHEK CHEK CONTROL SCREEN

DYNAMIC BEAM SEAL TUBE

04 16.1 — — 12.0 13.006 28.9 23.8 21.1 — 22.008 49.5 44.5 40.6 — 41.510 76.0 71.3 60.1 — 63.5

FLARELESS TUBE

04 17.0 — — 12.0 14.506 31.5 26.3 22.5 — 23.508 54.5 47.5 43.1 — 45.710 81.5 75.3 62.3 — 70.0

METRIC DYNAMIC BEAM SEAL TUBE

06 23.6 — — 14.0 15.008 25.6 24.4 — — 21.510 34.6 — 24.6 — 30.012 — 45.0 — — 40.014 69.2 — 59.2 — 58.516 — 71.0 — — 73.0

NOMINAL WEIGHTS OF LEE PRODUCTSIN ROSAN ADAPTERS (grams)´

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STYLE "B"FLARED

ENDS SIMILARTO AS4395E04

STYLE "C"FLARELESS


STANDARD CONFIGURATIONSSTANDARD INSERT STANDARD INSERT CONVERTED PREFIX

PRODUCT LINE PART # PREFIX FLARED FLARELESS

Material ................................................ 304 Cres (QQ-S-763)Proof Pressure ..................................... 6000 psiNominal Weight "B" .............................. 23.3 gramsNominal Weight "C" ............................. 28.9 grams

Dash 4 Lee UnionsStainlessSteel

Lee Jet JETA JETB JETCHigh Watt Jet JEHA JEHB JEHCBender Jet JEBA JEBB JEBCJeva JEVA JEVB JEVC18 Series Visco Jet VDCA VDCB VDCCRestrictor Chek RCRA RCRB RCRC187 Flow Control FCRA FCRB FCRC187 Lee Chek CKRA CKRB CKRC187 Lo-Lohm Chek CKRA CKRB CKRC187 Zero Leak Chek CSRA CSRB CSRC187 Lee PRI PRFA PRFB PRFCLee TRI PRTA PRTB PRTC

Example: Insert Part Number JETA1872800L becomes JETB1872800L in a "B" Union.NOTE: AS4395 supercedes MS24385; AS33514 supercedes MS33514.

CAD900

CAD901

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Dash 4 Titanium Lee Unions

STYLE "F"FLARELESS

ENDSSIMILARTOAS33514E4

STYLE "E"FLARED


Lee Jet JETA JETE JETFHigh Watt Jet JEHA JEHE JEHFBender Jet JEBA JEBE JEBFJeva JEVA JEVE JEVF18 Series Visco Jet VDCA VDCE VDCFRestrictor Chek RCRA RCRE RCRF187 Flow Control FCRA FCRE FCRF187 Lee Chek CKRA CKRE CKRF187 Lo-Lohm Chek CKRA CKRE CKRF187 Zero Leak Chek CSRA CSRE CSRF187 Lee PRI PRFA PRFE PRFFLee TRI PRTA PRTE PRTF

Example: Insert Part Number JETA1872800L becomes JETE1872800L in an "E" Union.NOTE: AS4395 supercedes MS24385; AS33514 supercedes MS33514.



Material ................................................ 6AL-4V Ti (AMS 4965)Proof Pressure ..................................... 6000 psiNominal Weight "E" .............................. 12.3 gramsNominal Weight "F" .............................. 15.3 grams

CAD902

CAD903

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STYLE "G"DYNAMICBEAM SEAL

ENDS SIMILARTO MIL-F-85720/1-04

Lee Jet JETA JETGHigh Watt Jet JEHA JEHGBender Jet JEBA JEBGJeva JEVA JEVG18 Series Visco Jet VDCA VDCGRestrictor Chek RCRA RCRG187 Flow Control FCRA FCRG187 Lee Chek CKRA CKRG187 Lo-Lohm Chek CKRA CKRG187 Zero Leak Chek CSRA CSRG187 Lee PRI PRFA PRFGLee TRI PRTA PRTG5K Jet JHTA JHTGHigh Pressure High Watt JHHA JHHGHigh Pressure Bender Jet JHBA JHBGHigh Pressure Visco Jet VHCA VHCGHigh Pressure 187 Chek CHRA CHRG

Example: Insert Part Number JETA1872800L becomes JETG1872800L in a "G" Union.

Material ................................................ 6AL-4V Ti (AMS 4965)Proof Pressure ..................................... 16,000 psiNominal Weight .................................... 19.9 grams

STANDARD CONFIGURATIONSSTANDARD INSERT STANDARD INSERT CONVERTED

PRODUCT LINE PART # PREFIX PREFIX


CAD905

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Dash 6

281 Flow Control FCRA FCRB FCRC281 Flosert FLFA FLFB FLFC250 Lee Chek CKRA CKRB CKRC250 Lo-Lohm Chek CKRA CKRB CKRC281 Kilowatt Jet JEKA JEKB JEKC281 PRI PRFA PRFB PRFC

Example: Insert Part Number FCRA2815250L becomes FCRB2815250L in a "B" Union.Note: AS4395 supercedes MS24385; AS33514 supercedes MS33514.

Material ................................................ 304 Cres (QQ-S-763)Proof Pressure ..................................... 6000 psiNominal Weight "B" .............................. 57.7 gramsNominal Weight "C" ............................. 53.6 grams



STYLE "C"FLARELESS


STYLE "B"FLARED

ENDSSIMILARTO AS4395E06

Lee UnionsStainlessSteel

CAD910

CAD911

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250 Lee Chek CKRA CKRE CKRF250 Lo-Lohm Chek CKRA CKRE CKRF281 Flow Control FCRA FCRE FCRF281 Flosert FLFA FLFE FLFF281 Kilowatt Jet JEKA JEKE JEKF281 PRI PRFA PRFE PRFF

Example: Insert Part Number FCRA2815250L becomes FCRE2815250L in an "E" Union.Note: AS4395 supercedes MS24385; AS33514 supercedes MS33514.



Material ................................................ 6AL-4V Ti (AMS 4965)Proof Pressure ..................................... 6000 psiNominal Weight "E" .............................. 31.0 gramsNominal Weight "F" .............................. 29.9 grams


STYLE "E" ENDS SIMILARFLARED TO AS4395E06

CAD912

STYLE "F" ENDS SIMILARFLARELESS TO AS33514E6

CAD913

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STYLE "G"DYNAMICBEAM SEAL

ENDSSIMILAR TOMIL-F-85720/1-06



250 Lee Chek CKRA CKRG250 Lo-Lohm Chek CKRA CKRG250 High Pressure Chek CHRA CHRG250 High Pressure TRI PHTA PHTG281 Flow Control FCRA FCRG281 Flosert FLFA FLFG281 Kilowatt Jet JEKA JEKG281 PRI PRFA PRFG281 High Pressure PRI PHFA PHFG

Example: Insert Part Number FCRA2815250L becomes FCRG2815250L in a "G" Union.

STANDARD CONFIGURATIONSSTANDARD INSERT STANDARD INSERT CONVERTED

PRODUCT LINE PART # PREFIX PREFIX

CAD915

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Dash 6 to 4 Lee Unions

STYLE "H" DYNAMIC ENDS SIMILAR TOBEAM SEAL MIL-F-85720/1-04 & -06


250 Lee Chek CKFA/CKRA CKFH CKRH250 Lo-Lohm Chek CKFA/CKRA CKFH CKRH250 High Pressure Chek CHFA/CHRA CHFH CHRH250 High Pressure TRI PHFA/PHRA PHFH PHRH281 Flow Control FCFA/FCRA FCFH FCRH281 Flosert FLFA/FLRA FLFH FLRH281 PRI PRFA/PRRA PRFH PRRH281 High Pressure PRI PHFA/PHRA PHFH PHRH281 Kilowatt Jet JEKA JEKH*

Example: Insert Part Number FCRA2815250L becomes FCRH2815250L in an "H" Union.To change Flow Directions FCRH2815250L becomes FCFH2815250L.

*Bidirectional Flow

STANDARD CONFIGURATIONSSTANDARD STANDARD

INSERT INSERT PART #PRODUCT LINE PREFIX

CONVERTED PREFIX

FORWARD REVERSE

CAD920

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LEE LOHM NOM. PASSAGE NOM. SCREENPART NUMBER RATE SIZE (Inches) HOLE SIZE (Inches)

VXLA2500680L 680 0.060 0.031VXLA2500910L 910 0.060 0.031VXLA2500120D 1200 0.050 0.031VXLA2500140D 1400 0.050 0.031VXLA2500190D 1900 0.045 0.031VXLA2500210D 2100 0.040 0.031VXLA2500270D 2700 0.035 0.015VXLA2500330D 3300 0.035 0.015VXLA2500370D 3700 0.035 0.015VXLA2500450D 4500 0.030 0.015VXLA2500560D 5600 0.025 0.015VXLA2500620D 6200 0.025 0.015VXLA2500740D 7400 0.020 0.015VXLA2500820D 8200 0.020 0.015

Note: AS4395 supercedes MS24385.

PERFORMANCELohm Rate Tolerance ................................... ±5%Maximum Working Pressure ......................... 3000 psidProof Pressure .............................................. 6000 psiNominal Weight ............................................. 30.0 grams


Fitting 304 Cres QQ-S-763Stack Retainer 303 Cres QQ-S-763CSpacers 303 Cres QQ-S-763CShims 303 Cres QQ-S-763CSpinner Discs 17-7PH Cres AMS 5528Metering Discs 17-7PH Cres AMS 5529Pin 17-4PH Cres AMS 5643Screens 303 Cres QQ-S-763C

304L Cres ASTM A 666Braze — AMS 4774

Finish: All Cres 1Passivated per QQ-P-35.

Line MountAxialVisco Jet

CAD940

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END SIMILAR END SIMILARTO AS4395E04 TO AS4396E04


PERFORMANCE

LEE LOHM MIN. PASSAGE NOM. SCREENPART NUMBER RATE SIZE (Inches) HOLE SIZE (Inches)VXLA2501112D 1 120 0.060 0.031VXLA2501140D 1 400 0.060 0.031VXLA2501190D 1 900 0.050 0.031VXLA2501270D 2 700 0.045 0.031VXLA2501320D 3 200 0.040 0.031VXLA2501480D 4 800 0.035 0.015VXLA2501620D 6 200 0.030 0.015VXLA2501740D 7 400 0.025 0.015VXLA2501840D 8 400 0.025 0.015VXLA2501980D 9 800 0.020 0.015VXLA2501110H 11 000 0.020 0.015

AxialVisco Jet Line Mount

Note: AS4395 supercedes MS24385; AS4396 supercedes MS24386.

Lohm Rate Tolerance ................................... ±5%Maximum Working Pressure ......................... 3000 psidProof Pressure .............................................. 6000 psiNominal Weight ............................................. 40.0 grams

CAD945

Fitting 304 Cres QQ-S-763Stack Retainer 303 Cres QQ-S-763CSpacers 303 Cres QQ-S-763CShims 303 Cres QQ-S-763CSpinner Discs 17-7PH Cres AMS 5528Metering Discs 17-7PH Cres AMS 5529

Screens 303 Cres QQ-S-763C304L Cres ASTM A 666

Pin 17-4PH Cres AMS 5643Braze — AMS 4774

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Line Mount43 SeriesVisco Jet

VDLA4336500D 5 000 0.031 0.020VDLA4336700D 7 000 0.031 0.020VDLA4326250H 25 000 0.015 0.010VDLA4326326H 32 600 0.015 0.010VDLA4326460H 46 000 0.015 0.010VDLA4326565H 56 500 0.015 0.010VDLA4326650H 65 000 0.015 0.010VDLA4326730H 73 000 0.015 0.010VDLA4316950K 950 000 0.005 0.002VDLA4316135T 1 350 000 0.005 0.002VDLA4316220T 2 200 000 0.005 0.002

LEE LOHM MIN. PASSAGE NOM. SCREENPART NUMBER RATE SIZE (Inches) HOLE SIZE (Inches)


PERFORMANCELohm Rate Tolerance ................................... ±5%Maximum Working Pressure ......................... 3000 psidProof Pressure .............................................. 6000 psiNominal Weight ............................................. 41.1 grams

Fittings 304L Cres QQ-S-763Visco Stack 304L Cres ASTM A 666Spacers 304L Cres ASTM A 666Screens 304L Cres ASTM A 666Housing 304L Cres AMS 5647

Braze —AMS 4774 &AMS 4777



CAD925

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Fittings 304L Cres QQ-S-763Visco Stack 304L Cres ASTM A 666Spacers 304L Cres ASTM A 666Screens 304L Cres ASTM A 666

AMS 5647,Housing 304L Cres ASTM A 269 or

QQ-S-763Braze — AMS 4774





Lohm Rate Tolerance ................................... ±5%Maximum Working Pressure ......................... 3000 psidProof Pressure .............................................. 6000 psiNominal Weight ............................................. 80.0 grams

PERFORMANCE

LEE "L" MINIMUM NOMINALPART LOHM DIM. PASSAGE SCREEN HOLE

NUMBER RATE (Inches) SIZE (Inches) SIZE (Inches)

VDLA6826137D 1 370 2.04 0.062 No ScreenVDLA6826181D 1 810 2.26 0.062 No ScreenVDLA6816880D 8 800 2.04 0.032 0.020VDLA6816124H 12 400 2.04 0.032 0.020VDLA6816152H 15 200 2.26 0.032 0.020VDLA6816176H 17 600 2.26 0.032 0.020VDLA6816196H 19 600 2.37 0.032 0.020


CAD930

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Housing 304 Cres QQ-S-763Visco Stack 304 Cres AMS 5370

Lock Nuts —MS21042-3 or

MS21043-3

Bolts —MS9556 or

MS9732



PERFORMANCELohm Rate Tolerance ................................... ±5%Maximum Working Pressure ......................... 3000 psidProof Pressure .............................................. 6000 psi

VDLA1415400D 4000 1.82 0.055 236VDLA1415565D 5650 2.04 0.055 268VDLA1415693D 6930 2.25 0.055 299VDLA1415800D 8000 2.45 0.055 331VDLA1415890D 8900 2.66 0.055 363

LEE "L" MINIMUM NOMINALPART LOHM DIM. PASSAGE WEIGHT

NUMBER RATE (Inches) SIZE (Inches) (Grams)


CAD935

18

JMATERIALS


Fitting 316 Cres AMS 5648

Poppet 440C QQ-S-763




CADDIMENSIONS

TUBE SIZE A B C D

08 1.500 1.000 .56 .750-16UNJF-3A 976

12 1.750 1.375 .69 1.0625-12UNJ-3A 977

16 2.125 1.625 .69 1.3125-12UNJ-3A 978

Hi-QChek Valve Line Mount

Finish: All Cres Parts Passivated per QQ-P-35.Note: AS33514 superceds MS33514

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Hi-QChek Valve Line Mount

PERFORMANCELEE TUBE LOHM

PART NUMBER SIZE RATE

CKBC0500605A 08 14

CKBC0750605A 12 7.5

CKBC1000605A 16 3.5


checked direction 1 drop/hour at 1000-4000 psidMaximum Working Pressure ............... 4 000 psidProof Pressure .................................... 8 000 psiBurst Pressure .................................. 16 000 psi

Valve Performance on MIL-H-83282 at 80°F. 1 drop = 50 µL

20

JVISCO JET LOHM RATE MIN. PASSAGE NOM. SCREEN

PART NUMBER ±5% SIZE (Inches) HOLE SIZE (Inches)

VHCK0604112H 11 200 0.015 0.008VHCK0604162H 16 200 0.015 0.008VHCK0604176H 17 600 0.010 0.006VHCK0604240H 24 000 0.010 0.006VHCK0604330H 33 000 0.010 0.006VHCK0604410H 41 000 0.010 0.006VHCK0604800H 80 000 0.007 0.004VHCK0604145K 145 000 0.005 0.004VHCK0604198K 198 000 0.005 0.004VHCK0604243K 243 000 0.005 0.004VHCK0604280K 280 000 0.005 0.004VHCK0604313K 313 000 0.005 0.004

RestrictorsDynamicBeam Seal

PERFORMANCELohm Rate Tolerance ............................................... ±5%Maximum Working Pressure ..................................... 5 000 psidProof Pressure ...... 10 000 psi Burst Pressure ..... 20 000 psi


Body 304L Cres QQ-S-763Pin 17-4PH Cres AMS 5643Spacers 303 Cres QQ-S-763CScreen (VHCK) 304L Cres ASTM A 666Screen (JHHK) 440C Cres QQ-S-763Screen (JHBK) 303 Cres QQ-S-763C

304L Cres ASTM A 666Screen (JHTK) 15-5PH Cres AMS 5659Metering Element

VHCK 304L Cres ASTM A 666JHHK 304L Cres QQ-S-763JHBK 17-7PH Cres AMS 5529

Adapter 6AL-4V Ti AMS 4967Locking Ring A286 Cres AMS 5731

Finish: All Cres Parts Passivated per QQ-P-35.Adapter finish per MIL-L-46010 • Locking Ring coated with Blue Tiolin E20.

ENDSIMILARTOMIL-F-85720/1-04

CAD950

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In Rosán Adapters HIWATT JET LOHM NOMINAL SCREEN

PART NUMBER RATE ±5% HOLE SIZE (Inches)

JHHK0604350L 350 0.024JHHK0604375L 375 0.024JHHK0604400L 400 0.024JHHK0604425L 425 0.024JHHK0604450L 450 0.024JHHK0604475L 475 0.024JHHK0604500L 500 0.024JHHK0604550L 550 0.020JHHK0604600L 600 0.020JHHK0604650L 650 0.020JHHK0604700L 700 0.020JHHK0604750L 750 0.020JHHK0604800L 800 0.015JHHK0604850L 850 0.015JHHK0604900L 900 0.015JHHK0604950L 950 0.015JHHK0604100D 1000 0.015JHHK0604110D 1100 0.012JHHK0604120D 1200 0.012JHHK0604130D 1300 0.012JHHK0604140D 1400 0.012JHHK0604150D 1500 0.012JHHK0604160D 1600 0.012JHHK0604170D 1700 0.012JHHK0604180D 1800 0.012JHHK0604190D 1900 0.012JHHK0604200D 2000 0.012JHHK0604220D 2200 0.008JHHK0604240D 2400 0.008JHHK0604260D 2600 0.008JHHK0604280D 2800 0.008JHHK0604300D 3000 0.008

BENDER JET LOHM RATE MIN. PASSAGE NOM. SCREENPART NUMBER ±5% SIZE (Inches) HOLE SIZE (Inches)

JHBK0604190D 1900 0.030 0.020JHBK0604240D 2400 0.030 0.020JHBK0604330D 3300 0.025 0.015JHBK0604370D 3700 0.020 0.015JHBK0604500D 5000 0.020 0.015JHBK0604590D 5900 0.020 0.015JHBK0604710D 7100 0.015 0.008JHBK0604950D 9500 0.015 0.008

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RestrictorsDynamicBeam Seal

LEE 5K JET LOHM NOMINAL SCREENPART NUMBER RATE ±5% HOLE SIZE (Inches)

JHTK0604100D 1 000 0.008JHTK0604110D 1 100 0.008JHTK0604120D 1 200 0.008







JHTK0604430D 4 300 0.008

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In Rosán Adapters





JHTK0604900D 9 000 0.006JHTK0604950D 9 500 0.006JHTK0604100H 10 000 0.006

JHTK0604110H 11 000 0.004JHTK0604120H 12 000 0.004JHTK0604130H 13 000 0.004



JHTK0604200H 20 000 0.004

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VISCO JET LOHM RATE MIN. PASSAGE NOM. SCREENPART NUMBER ±5% SIZE (Inches) HOLE SIZE (Inches)

ENDSIMILARTOMS33514

VHCL0604112H 11 200 0.015 0.008VHCL0604162H 16 200 0.015 0.008VHCL0604176H 17 600 0.010 0.006VHCL0604240H 24 000 0.010 0.006VHCL0604330H 33 000 0.010 0.006VHCL0604410H 41 000 0.010 0.006VHCL0604800H 80 000 0.007 0.004VHCL0604145K 145 000 0.005 0.004VHCL0604198K 198 000 0.005 0.004VHCL0604243K 243 000 0.005 0.004VHCL0604280K 280 000 0.005 0.004VHCL0604313K 313 000 0.005 0.004

FlarelessTube Restrictors

PERFORMANCELohm Rate Tolerance ............................................... ±5%Maximum Working Pressure ..................................... 4 000 psidProof Pressure ....... 8 000 psi Burst Pressure ...... 16 000 psi


Note: MS33514 will be superceded by AS4375.

Body 304L Cres QQ-S-763Pin 17-4PH Cres AMS 5643Spacers 303 Cres QQ-S-763CScreen (VHCL) 304L Cres ASTM A 666Screen (JHHL) 440C Cres QQ-S-763Screen (JHBL) 303 Cres QQ-S-763C

304L Cres ASTM A 666Screen (JHTL) 15-5PH Cres AMS 5659Metering Element

VHCL 304L Cres QQ-S-766JHHL 304L Cres QQ-S-763JHBL 17-7PH Cres AMS 5529

Adapter 6AL-4V Ti AMS 4967Locking Ring A286 Cres AMS 5731

CAD960

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In Rosán Adapters

HIWATT JET LOHM NOMINAL SCREENPART NUMBER RATE ±5% HOLE SIZE (Inches)

JHHL0604350L 350 0.024JHHL0604375L 375 0.024JHHL0604400L 400 0.024JHHL0604425L 425 0.024JHHL0604450L 450 0.024JHHL0604475L 475 0.024JHHL0604500L 500 0.024JHHL0604550L 550 0.020JHHL0604600L 600 0.020JHHL0604650L 650 0.020JHHL0604700L 700 0.020JHHL0604750L 750 0.020JHHL0604800L 800 0.015JHHL0604850L 850 0.015JHHL0604900L 900 0.015JHHL0604950L 950 0.015JHHL0604100D 1000 0.015JHHL0604110D 1100 0.012JHHL0604120D 1200 0.012JHHL0604130D 1300 0.012JHHL0604140D 1400 0.012JHHL0604150D 1500 0.012JHHL0604160D 1600 0.012JHHL0604170D 1700 0.012JHHL0604180D 1800 0.012JHHL0604190D 1900 0.012JHHL0604200D 2000 0.012JHHL0604220D 2200 0.008JHHL0604240D 2400 0.008JHHL0604260D 2600 0.008JHHL0604280D 2800 0.008JHHL0604300D 3000 0.008

BENDER JET LOHM RATE MIN. PASSAGE NOM. SCREENPART NUMBER ±5% SIZE (Inches) HOLE SIZE (Inches)

JHBL0604190D 1900 0.030 0.020JHBL0604240D 2400 0.030 0.020JHBL0604330D 3300 0.025 0.015JHBL0604370D 3700 0.020 0.015JHBL0604500D 5000 0.020 0.015JHBL0604590D 5900 0.020 0.015JHBL0604710D 7100 0.015 0.008JHBL0604950D 9500 0.015 0.008

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JHTL0604100D 1 000 0.008JHTL0604110D 1 100 0.008JHTL0604120D 1 200 0.008







JHTL0604430D 4 300 0.008

FlarelessTube Restrictors

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In Rosán Adapters





JHTL0604900D 9 000 0.006JHTL0604950D 9 500 0.006JHTL0604100H 10 000 0.006

JHTL0604110H 11 000 0.004JHTL0604120H 12 000 0.004JHTL0604130H 13 000 0.004



JHTL0604200H 20 000 0.004

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END SIMILARTO AECMApr EN2604

VHCJ1206112H 11 200 0,38 0,20VHCJ1206162H 16 200 0,38 0,20VHCJ1206176H 17 600 0,25 0,15VHCJ1206240H 24 000 0,25 0,15VHCJ1206330H 33 000 0,25 0,15VHCJ1206410H 41 000 0,25 0,15VHCJ1206800H 80 000 0,18 0,10VHCJ1206145K 145 000 0,13 0,10VHCJ1206198K 198 000 0,13 0,10VHCJ1206243K 243 000 0,13 0,10VHCJ1206280K 280 000 0,13 0,10VHCJ1206313K 313 000 0,13 0,10

VISCO JET LOHM RATE MIN. PASSAGE NOM. SCREENPART NUMBER ± 5% SIZE (mm) HOLE SIZE (mm)

Metric DynamicBeam Seal Restrictors


Body 304L Cres QQ-S-763Pin 17-4PH Cres AMS 5643Spacers 303 Cres QQ-S-763CScreen (VHCJ) 304L Cres ASTM A 666Screen (JHHJ) 440C Cres QQ-S-763Screen (JHBJ) 303 Cres QQ-S-763C

304L Cres ASTM A 666Screen (JHTJ) 15-5PH Cres AMS 5659Metering Element

VHCJ 304L Cres QQ-S-766JHHJ 304L Cres QQ-S-763JHBJ 17-7PH Cres AMS 5529

Adaptor 6AL-4V Ti AMS 4967Locking Ring A286 Cres AMS 5731

PERFORMANCELohm Rate Tolerance ............................................. ±5%Maximum Working Pressure ................................... 28 MPa (diff.)Proof Pressure ....... 56 MPa Burst Pressure ..... 112 MPa


CAD970

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HIWATT JET LOHM NOMINAL SCREENPART NUMBER RATE ±5% HOLE SIZE (mm)

JHHJ1206350L 350 0,61JHHJ1206375L 375 0,61JHHJ1206400L 400 0,61JHHJ1206425L 425 0,61JHHJ1206450L 450 0,61JHHJ1206475L 475 0,61JHHJ1206500L 500 0,61JHHJ1206550L 550 0,51JHHJ1206600L 600 0,51JHHJ1206650L 650 0,51JHHJ1206700L 700 0,51JHHJ1206750L 750 0,51JHHJ1206800L 800 0,38JHHJ1206850L 850 0,38JHHJ1206900L 900 0,38JHHJ1206950L 950 0,38JHHJ1206100D 1000 0,38JHHJ1206110D 1100 0,30JHHJ1206120D 1200 0,30JHHJ1206130D 1300 0,30JHHJ1206140D 1400 0,30JHHJ1206150D 1500 0,30JHHJ1206160D 1600 0,30JHHJ1206170D 1700 0,30JHHJ1206180D 1800 0,30JHHJ1206190D 1900 0,30JHHJ1206200D 2000 0,30JHHJ1206220D 2200 0,20JHHJ1206240D 2400 0,20JHHJ1206260D 2600 0,20JHHJ1206280D 2800 0,20JHHJ1206300D 3000 0,20

BENDER JET LOHM RATE MIN. PASSAGE NOM. SCREENPART NUMBER ±5% SIZE (mm) HOLE SIZE (mm)

JHBJ1206190D 1900 0,76 0,51JHBJ1206240D 2400 0,76 0,51JHBJ1206330D 3300 0,64 0,38JHBJ1206370D 3700 0,51 0,38JHBJ1206500D 5000 0,51 0,38JHBJ1206590D 5900 0,51 0,38JHBJ1206710D 7100 0,38 0,20JHBJ1206950D 9500 0,38 0,20

In Rosán Adapters

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LEE 5K JET LOHM NOMINAL SCREENPART NUMBER RATE ±5% HOLE SIZE (mm)

JHTJ1206100D 1 000 0,20JHTJ1206110D 1 100 0,20JHTJ1206120D 1 200 0,20







JHTJ1206430D 4 300 0,20

Metric DynamicBeam Seal Restrictors

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In Rosán Adapters

LEE 5K JET LOHM NOMINAL SCREENPART NUMBER RATE ±5% HOLE SIZE (mm)




JHTJ1206900D 9 000 0,15JHTJ1206950D 9 500 0,15JHTJ1206100H 10 000 0,15

JHTJ1206110H 11 000 0,10JHTJ1206120H 12 000 0,10JHTJ1206130H 13 000 0,10



JHTJ1206200H 20 000 0,10

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Inlet Screens

PERFORMANCELEE PART HOLE FORNUMBER TUBE LOHM SIZES ADDITIONALPREFIX SIZE RATE (Inches) INFO. SEE PG.

INCH SIZESFSIK0604 04 35 0.004, 0.006, 0.008, 0.015 H 88FSIK0806 06 20 0.004, 0.006, 0.008, 0.015 H 89FSIK1008 08 10 0.006, 0.008, 0.015 H 90FSIK1210 10 8 0.006, 0.008, 0.015 H 91

METRIC SIZES

FSIJ1206 06 35 0.004, 0.006, 0.008, 0.015 H 96FSIJ1208 08 35 0.004, 0.006, 0.008, 0.015 H 97FSIJ1610 10 20 0.004, 0.006, 0.008, 0.015 H 98FSIJ1812 12 10 0.006, 0.008, 0.015 H 99FSIJ2014 14 10 0.006, 0.008, 0.015 H 100FSIJ2216 16 8 0.006, 0.008, 0.015 H 101

DYNAMIC BEAM SEAL

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In Rosán Adapters

PERFORMANCELEE PART HOLE FORNUMBER TUBE LOHM SIZES ADDITIONALPREFIX SIZE RATE (Inches) INFO. SEE PG

INCH SIZESFSIL0604 04 35 0.004, 0.006, 0.008, 0.015 H 92FSIL0806 06 20 0.004, 0.006, 0.008, 0.015 H 93FSIL1008 08 10 0.006, 0.008, 0.015 H 94FSIL1210 10 8 0.006, 0.008, 0.015 H 95

FLARELESS TUBE

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DIMENSIONSTUBE SIZE A B C D E

04.743

.380 .700.4375 - .4375 -

.728 24UNJS 20UNJF

06.988

.415 .814.5625 - .5625 -

.973 20UNJS 18UNJF

08 1.132 .465 1.040.7188 - .6875 -20UNJS 24UNJEF

10 1.358 .527 1.170.8438 - .8125 -18UNJS 20UNJEF

CAD

950

952

954

956

Spring Seat 6AL-4V Ti AMS 4967Spring 17-7PH Cres AMS 5678Poppet 15-5PH Cres AMS 5659Screen Body 304L Cres QQ-S-763

Screen304L Cres or ASTM A 666

410 Cres QQ-S-763CBraze — AMS 4774


Adapter 6AL-4V TiAMS 4928, AMS 4965

or AMS 4967

Locking Ring A286 CresAMS 5731 or

AMS 5734


Finish: All Cres Parts Passivated per QQ-P-35Adapter Finish per MIL-L-46010 • Locking Ring coated with Blue Tiolin E20

END SIMILARTO MIL-F-85720/1

DynamicBeam Seal Inlet Cheks

35

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UNSCREENED SCREENED

In Rosán Adapters

PERFORMANCELEE MAX. SCREEN SCREEN

PART TUBE LOHM OPEN AREA REMOVAL TOOLNUMBER SIZE RATE IN.2 (Nom.) PART NUMBER

CIFK0604315D 04 150 0.03 CUTA1900328CCIFK0604060L 04 60 No ScreenCIFK0806350L 06 50 0.06 CUTA3030328CCIFK0806027L 06 27 No ScreenCIFK1008322L 08 22 0.09 CUTA4040328CCIFK1008013L 08 13 No ScreenCIFK1210313L 10 13 0.12 CUTA5030328CCIFK1210008L 10 8 No Screen


checked direction 1 drop/hour at 1000-5000 psidNominal Screen Hole Size .................. 0 .008"Maximum Working Pressure ............... 5000 psidProof Pressure .................................... 10 000 psiBurst Pressure .................................... 20 000 psiScreen Installation/Extraction Procedures see Pages L21 – L25


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04 .968 .395 .700.4375 - .4375 -20UNJF 20UNJF

06 1.184 .430 .814.5625 - .5625 -18UNJF 18UNJF

08 1.428 .465 1.040.7500 - .6875 -16UNJF 24UNJEF

10 1.712 .527 1.170.8750 - .8125 -14UNJF 20UNJEF

960

962

964

966


CAD

END SIMILARTO AS33514

FlarelessTube Inlet Cheks


Finish: All Cres Parts Passivated per QQ-P-35.Adapter Finish per MIL-L-46010 • Locking Ring coated with Blue Tiolin E20

Note: AS33514 supercedes MS33514

Spring Seat 6AL-4V Ti AMS 4967Spring 17-7PH Cres AMS 5678Poppet 15-5PH Cres AMS 5659Screen Body 304L Cres QQ-S-763





or AMS 4967Locking Ring A286 Cres AMS 5731

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UNSCREENED SCREENED

In Rosán Adapters


PART TUBE LOHM OPEN AREA REMOVAL TOOLNUMBER SIZE RATE IN.2 (Nom.) PART NUMBER

CIFL0604315D 04 150 0.03 CUTA1900328CCIFL0604060L 04 60 No ScreenCIFL0806350L 06 50 0.06 CUTA3030328CCIFL0806027L 06 27 No ScreenCIFL1008322L 08 22 0.09 CUTA4040328CCIFL1008013L 08 13 No ScreenCIFL1210313L 10 13 0.12 CUTA5030328CCIFL1210008L 10 8 No Screen


checked direction 1 drop/hour at 1000-4000 psidNominal Screen Hole Size .................. 0 .008"Maximum Working Pressure ............... 4000 psidProof Pressure .................................... 8000 psiBurst Pressure .................................... 16 000 psiScreen Installation/Extraction Procedures see Pages L21 – L25


38

JSpring Seat 6AL-4V Ti AMS 4967Spring 17-7PH Cres AMS 5678Poppet 15-5PH Cres AMS 5659Screen Body 304L Cres QQ-S-763






06 25,2 10,0 19,5 MJ12X1,25 MJ12X1,25 970

08 27,0 10,0 19,5 MJ14X1,5 MJ12X1,25 971

10 27,0 11,3 22,6 MJ16X1,5 MJ16X1,5 972

14 36,0 12,7 28,0 MJ20X1,5 MJ20X1,5 974


DIMENSIONS (mm)TUBE SIZE A B C D E CAD

Inlet CheksMetric DynamicBeam Seal



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UNSCREENED SCREENED

In Rosán Adapters


PART TUBE LOHM OPEN REMOVAL TOOLNUMBER SIZE RATE AREA (mm2) PART NUMBER

CIFJ1206315D 06 150 13 CUTA2000328CCIFJ1206060L 06 60 No ScreenCIFJ1208375L 08 75 20 CUTA2650328CCIFJ1208060L 08 60 No ScreenCIFJ1610325L 10 25 60 CUTA3500328CCIFJ1610015L 10 15 No ScreenCIFJ2014315L 14 15 85 CUTA4500328CCIFJ2014008L 14 8 No Screen

Cracking Pressure .............................. 35 ± 20 kPaMaximum Leakage in .................. 1 drop/minute at 35 kPa (diff.)

checked direction 1 drop/hour at 7-28 MPa (diff.)Nominal Screen Hole Size .................. 0,2 mmMaximum Working Pressure ............... 28 MPa (diff.)Proof Pressure .................................... 56 MPaBurst Pressure .................................... 112 MPaScreen Installation/Extraction Procedures see Pages L21 – L25Valve Performance on MIL-H-83282 at 27°C. 1 drop = 50 µL

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CAD

Spring Seat 6AL-4V Ti AMS 4967Spring 17-7PH Cres AMS 5678Poppet 15-5PH Cres AMS 5659


or AMS 4967

Locking Ring A286 CresAMS 5731 or

AMS 5734


Finish: All Cres Parts Passivated per QQ-P-35Adapter Finish per MIL-L-46010 • Locking Ring coated with Blue Tiolin E20

06 .980 .430 .814.5625 - .5625 -20UNJS 18UNJF

08 1.132 .465 1.040.7188 - .6875 -20UNJS 24UNJEF

10 1.358 .527 1.170.8438 - .8125 -18UNJS 20UNJEF

952

954

956


DynamicBeam Seal Return Chek

41

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In Rosán Adapters

PERFORMANCELEE TUBE MAX. LOHM


CIRK0806060L 06 60CIRK1008027L 08 27CIRK1210013L 10 13

Cracking Pressure ............................. 5 ± 3 psidMaximum Leakage in ......................... 1 drop/minute at 5 psid

checked direction 1 drop/hour at 1000-5000 psidMaximum Working Pressure .............. 5000 psidProof Pressure ................................... 10 000 psiBurst Pressure ................................... 20 000 psi


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CAD

06 1.184 .430 .814.5625 - .5625 -18UNJF 18UNJF

08 1.428 .465 1.040.7500 - .6875 -16UNJF 24UNJEF

10 1.712 .527 1.170.8750 - .8125 -14UNJF 20UNJEF

962

964

966


FlarelessTube Return Chek







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CIRL0806060L 06 60CIRL1008027L 08 27CIRL1210013L 10 13


checked direction 1 drop/hour at 1000-4000 psidMaximum Working Pressure ............... 4000 psidProof Pressure .................................... 8000 psiBurst Pressure .................................... 16 000 psi


In Rosán Adapters

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DIMENSIONS (mm)TUBE SIZE A B C D E

08 27,0 10,0 19,5 MJ14X1,5 MJ12X1,25 971

12 27,0 12,0 26,4 MJ18X1,5 MJ18X1,5 973

16 38,4 13,4 30,2 MJ22X1,5 MJ22X1,5 975

CAD


Return ChekMetric DynamicBeam Seal






45

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In Rosán Adapters



CIRJ1208060L 08 60CIRJ1812027L 12 27CIRJ2216013L 16 13

Cracking Pressure ............................. 35 ± 20 kPaMaximum Leakage in ................ 1 drop/minute at 35 kPa (diff.)

checked direction 1 drop/hour at 7-28 MPa (diff.)Maximum Working Pressure ............. 28 MPa (diff.)Proof Pressure .................................. 56 MPaBurst Pressure .................................. 112 MPa

Valve Performance on MIL-H-83282 at 27°C. 1 drop = 50 µL

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Cracking Pressure .......................................... 5 ± 3 psidMetered Lohm Rate Tolerance ....................... ±5%Maximum Working Pressure ........................... 5000 psidProof Pressure ................................................ 10 000 psiBurst Pressure ................................................ 20 000 psi

PERFORMANCE



06 .980 .430 .814.5625 - .5625 -20UNJS 18UNJF

08 1.132 .465 1.040.7188 - .6875 -20UNJS 24UNJEF

10 1.358 .527 1.170.8438 - .8125 -18UNJS 20UNJEF






CAD

952

954

956

DynamicBeam Seal Flow Controls

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TUBE LEE METERED MAX. FREE FLOWSIZE PART NUMBER LOHM RATE (±5%) LOHM RATE

06 FCFK0806070L 70 22FCFK0806080L 80 22FCFK0806095L 95 22FCFK0806110L 110 22FCFK0806130L 130 22FCFK0806150L 150 22FCFK0806175L 175 22FCFK0806200L 200 22FCFK0806230L 230 22FCFK0806260L 260 22

08 FCFK1008040L 40 12FCFK1008045L 45 12FCFK1008050L 50 12FCFK1008055L 55 12FCFK1008060L 60 12FCFK1008070L 70 12FCFK1008080L 80 12FCFK1008095L 95 12FCFK1008110L 110 12FCFK1008130L 130 12FCFK1008150L 150 12FCFK1008175L 175 12FCFK1008200L 200 12FCFK1008230L 230 12FCFK1008260L 260 12

10 FCFK1210015L 15 7FCFK1210020L 20 7FCFK1210025L 25 7FCFK1210030L 30 7FCFK1210035L 35 7FCFK1210040L 40 7FCFK1210045L 45 7FCFK1210050L 50 7FCFK1210055L 55 7FCFK1210060L 60 7FCFK1210070L 70 7FCFK1210080L 80 7FCFK1210095L 95 7FCFK1210110L 110 7FCFK1210130L 130 7FCFK1210150L 150 7

In Rosán Adapters

48

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CAD

06 1.184 .430 .814.5625 - .5625 -18UNJF 18UNJF

08 1.428 .465 1.040.7500 - .6875 -16UNJF 24UNJEF

10 1.712 .527 1.170.8750 - .8125 -14UNJF 20UNJEF

962

964

966

FlarelessTube Flow Controls


Cracking Pressure ............................................. 5 ± 3 psidMetered Lohm Rate Tolerance .......................... ±5%Maximum Working Pressure .............................. 4000 psidProof Pressure ................................................... 8000 psiBurst Pressure ................................................... 16 000 psi

PERFORMANCE




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06 FCFL0806070L 70 22FCFL0806080L 80 22FCFL0806095L 95 22FCFL0806110L 110 22FCFL0806130L 130 22FCFL0806150L 150 22FCFL0806175L 175 22FCFL0806200L 200 22FCFL0806230L 230 22FCFL0806260L 260 22

08 FCFL1008040L 40 12FCFL1008045L 45 12FCFL1008050L 50 12FCFL1008055L 55 12FCFL1008060L 60 12FCFL1008070L 70 12FCFL1008080L 80 12FCFL1008095L 95 12FCFL1008110L 110 12FCFL1008130L 130 12FCFL1008150L 150 12FCFL1008175L 175 12FCFL1008200L 200 12FCFL1008230L 230 12FCFL1008260L 260 12

10 FCFL1210015L 15 7FCFL1210020L 20 7FCFL1210025L 25 7FCFL1210030L 30 7FCFL1210035L 35 7FCFL1210040L 40 7FCFL1210045L 45 7FCFL1210050L 50 7FCFL1210055L 55 7FCFL1210060L 60 7FCFL1210070L 70 7FCFL1210080L 80 7FCFL1210095L 95 7FCFL1210110L 110 7FCFL1210130L 130 7FCFL1210150L 150 7

In Rosán Adapters

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Cracking Pressure ......................................... 35± 20 kPAMetered Lohm Rate Tolerance ...................... ±5%Maximum Working Pressure .......................... 28 MPa (diff.)Proof Pressure ............................................... 56 MPaBurst Pressure ............................................... 112 MPa

PERFORMANCE


DIMENSIONS (mm)TUBE SIZE A B C D E CAD

Flow ControlsMetric DynamicBeam Seal


10 27,0 11,3 22,6 MJ16X1,5 MJ16X1,5 972

14 36,0 12,7 28,0 MJ20X1,5 MJ20X1,5 974





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J

10 FCFJ1610040L 40 12

FCFJ1610045L 45 12

FCFJ1610050L 50 12

FCFJ1610055L 55 12

FCFJ1610060L 60 12

FCFJ1610070L 70 12

FCFJ1610080L 80 12

FCFJ1610095L 95 12

FCFJ1610110L 110 12

FCFJ1610130L 130 12

FCFJ1610150L 150 12

FCFJ1610175L 175 12

FCFJ1610200L 200 12

FCFJ1610230L 230 12

FCFJ1610260L 260 12

14 FCFJ2014015L 15 7

FCFJ2014020L 20 7

FCFJ2014025L 25 7

FCFJ2014030L 30 7

FCFJ2014035L 35 7

FCFJ2014040L 40 7

FCFJ2014045L 45 7

FCFJ2014050L 50 7

FCFJ2014055L 55 7

FCFJ2014060L 60 7

FCFJ2014070L 70 7

FCFJ2014080L 80 7

FCFJ2014095L 95 7

FCFJ2014110L 110 7

FCFJ2014130L 130 7

FCFJ2014150L 150 7


In Rosán Adapters

K

Pressure Components

1

K

❑ Microminiature❑ Damps Pressure Transients❑ Extends Life of Gauges, Switches

and Transducers

HYDAMP❑ Damps Pressure Spikes❑ Allows Gauge to Read Maximum,

Minimum or Average Pressure

❑ Records Peak Pressure❑ Simple to Remove and Read❑ Inconel Construction

Pressure Components

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TABLE OF CONTENTS

Micro Miniature restrictorDamp (Visco Jet) for

damping pressuretransients ....................... 3 – 5, 8 – 9

Hydamp Adjustable pulsationdamper ............................ 6, 10 – 11

Kipster Peak pressurerecorder ..................... 6 – 7, 12 – 13

Pressure Components

3

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LEE MICRO DAMPThe new Lee Visco Jet®, 0.125 inches in diameter, hasbeen designed specifically to provide pressure surgeprotection for hydraulic pressure transmitters, pressureswitches and pressure gauges as required by MIL-H-5440.

The new Micro Damp operates at system pressures ofup to 5000 psid and is so small it can often be incorpo-rated directly into the sensing port of a pressure trans-ducer. The package is only 0.125 inches in diameter and0.32 to 0.50 inches long, depending on the Lohm raterequired. Twelve Lohm rates are offered from 11,200 to313,000 Lohms, so the designer can properly size therestriction.

The Lee Micro Damp improves the accuracy, reliability,and life of pressure measurement instruments. A pres-sure transducer, for example, is specified for a particularapplication based upon a system's maximum operatingpressure, with an additional overpressure margin ifpressure transients, spikes or pulsations are present. Ifa pressure transducer is chosen to tolerate the higherpressure transients, then accuracy is sacrificed. TheLee Micro Damp Visco Snubber therefore allows atransducer optimized for a lower pressure range to beused. Also, reliability and life are improved since pres-sure sensing elements are not fully exposed to thedetrimental effects of the pressure spikes. Catastrophicfailures due to extreme, unanticipated overpressuriza-tion are also avoided. Using the Lohm Law for snubbingon the next page, performance can be accurately pre-dicted, eliminating costly trial and error methods.

Pressure Components

4

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TRANSDUCER SNUBBINGTransducer snubbing need no longer be guesswork.Using our new Lohm law for snubbers it is easy to selectthe correct Visco snubber for every application.

Typical applications involve snubbing a cyclic pressureripple superimposed on a steady pressure. The graphon page K5 together with the formula below provide arapid means of calculating the necessary Lohm rate.

TO FIND A LOHM RATEDecide how much attenuation is required and use thegraph on page 5 to obtain a value for fo . Use this in theformula below and solve for Lohm rate.

L = Fluid resistance (Lohms)fo = Frequency from graph (Hz)fr = Ripple frequency (Hz)v* = Internal volume of the transducer (in3)B = Fluid bulk modulus (psi)K* = Transducer compliance (in3/psi)Po = Ripple amplitude, peak-to-peak (psi)

*Obtainable from the transducer manufacturer.

EXAMPLEA pressure transducer is being damaged by a pumpripple of 270 Hz. The peak-to-peak amplitude is 1000psi. Knowing the transducer has an internal volume of0.09 in3 (1.5 mL) and a compliance of 3 x 10-7 in3/psi,which Visco snubber is required to reduce the ripple to1/20 of the unsnubbed amplitude? The fluid is Skydrolwith a bulk modulus of 340,000 psi.

Pressure Components

2.2 f0

fr (K + v/B) P0

L =

5

K

Obtain f 0 from the graph (170 Hz at 0.05 amplitude ratio.)Then use the formula:

Use Visco snubber Part Number VHSA1250800H(80,000 Lohms).

ATTENUATION CHART

Pressure Components

2.2 x 170

270 (3 + 2.6) x 10-7 x 1000L =

L = 78,200 Lohms

6

K

LEE HYDAMPThe Lee Hydamp is more than just a snubber. It is amulti-function damper that lets you read maximum,minimum or average pressures from an ordinary gaugewithout costly transducers, amplifiers or recorders.

Simply rotate the selector knob to read minimum pres-sure through to maximum pressure. In between, readaverage pressure while varying the damping. Lee Hy-damps extend the life of your gauges and are easy tomount.

Hydamps are available in a brass body for pressures upto 6000 psi. There is also a stainless steel version forpressures to 8000 psi.

LEE KIPSTERThe Kipster is a miniature peak pressure recorder. EachKipster contains a pressure sensitive disc which perma-nently and irreversibly deforms a calibrated amount inrelation to the peak pressure sensed. By simply meas-uring the deformation of the disc, the peak pressure canbe determined from the deflection versus pressure graphon page K13.

The Kipster is designed to be an economical alternativefor recording peak pressures. While its accuracy doesn'treplace sophisticated electronics, it does offer uniquedesign opportunities where other expensive and bulkyoptions are inappropriate. The Kipster can be used in awide range of applications. Typical examples are: waterhammer, hydraulic transient pressure rises, and war-ranty protection, where the Kipster will establish if amaximum operating pressure has been exceeded.

Pressure Components

7

K

Pressure Components

Due to its compact size, the Kipster is capable of beinginstalled in areas not accessible to electronic transduc-ers. The Kipster also utilizes the patented TWIS mount-ing system which provides for maximum mounting flex-ibility. The Kipster is even small enough to be installedin a -4 Tee!

PRESSURE RANGES/ACCURACYThere are 3 models of pressure recording Kipsters thatspan the pressure range from 4000 psi to 30,000 psi.The first model is designed to measure pressures in the4000 to 12,000 psi range and has an accuracy of ± 3%of full scale. The second and third models cover theranges of 7000 to 21,000 psi and 10,000 to 30,000 psiwith an accuracy of ± 21/2% and ± 3% of full scale,respectively.

PRESSURIZATION RATESThe Kipster will record peak pressure rises over a widerange of pressurization rates. Testing has been con-ducted with nitrogen at slow rates (0.14 psi/sec.), and athigher rates with water (2,000,000 psi/sec.).

The rate of pressurization has little effect on the Kipster'saccuracy up to 50,000 psi/sec. Above this rate, somedrift can be expected. If a repeatable rate of rise is beingmonitored, the drift is consistent Kipster to Kipster. Thishas been experimentally shown to 2,000,000 psi/sec.

8

K

PERFORMANCE

Lohm Rate Tolerance ................................ ±10%Maximum Working Pressure ...................... 8000 psidNominal Weight .......................................... 0.4 grams

PIN INSERT

NOMINAL SCREEN DATA

TOTAL OPEN SCREENDISC AREA AREA HOLE

STYLE (Square (Square SIZEInches) Inches) (Inches)

VHSA121 0.005 0.0009 0.004VHSA122 0.005 0.0009 0.004VHSA123 0.005 0.0009 0.004VHSA124 0.005 0.0009 0.004


Body 304L Cres QQ-S-763Pin 17-4PH Cres AMS 5643Visco Stack 304L Cres ASTM A 666Spacers 304L Cres QQ-S-763Screens 304L Cres ASTM A 666Braze — AMS 4774

MicroDamp Visco Snubber


CAD980

9

K

INSTALLATION HOLE


Tool Set Part Number .......................... CUTA1250306CProcedures ........................................... See Pages L21 – L25


Visco SnubberMicroDamp

LEE MINIMUMPART LOHM PASSAGE

NUMBER RATE SIZE (Inches)

VHSA1240112H 11 200 0.015

VHSA1240162H 16 200 0.015

VHSA1230176H 17 600 0.010

VHSA1230240H 24 000 0.010

VHSA1230330H 33 000 0.010

VHSA1230410H 41 000 0.010

VHSA1220800H 80 000 0.007

VHSA1210145K 145 000 0.005

VHSA1210198K 198 000 0.005

VHSA1210243K 243 000 0.005

VHSA1210280K 280 000 0.005

VHSA1210313K 313 000 0.005

10

K

Hydamp


Body * 303 Cres QQ-S-763C

Body ** 360 Brass QQ-B-626

Shaft 17-4PH Cres AMS 5643

O-Ring Retainer 301 Cres QQ-S-766C

O-Rings VITON MIL-R-83248/1

Back-up Ring TEFLON MS28774

Retaining Ring Cres MS16624-4037

Machine Screws Cres MS51957-13

Spacer Shim* 416 Cres QQ-S-763C

Spacer Shim** 360 Brass QQ-B-626

Knob PHENOLIC —

Lee Plug** 416 Cres QQ-S-763C

Lee Plug* 17-4PH Cres AMS 5643

187 Lee Chek** (see pg. E4) —

125 Lee Chek* (see pg. E28) —

* Cres version only

**Brass version onlyFinish: All Cres Parts Passivated per QQ-P-35.

CAD985

11

K

0° ............ MINIMUM PRESSURE

45° .......... AVERAGE PRESSURE(Maximum Damping)

90° .......... AVERAGE PRESSURE(Minimum Damping)

135° ........ AVERAGE PRESSURE(Maximum Damping)

180° ........ MAXIMUM PRESSURE

Hydamp

MAXIMUM MAXIMUMLEE WORKING TRANSIENT BURST

PART BODY PRESSURE PRESSURE PRESSURENUMBER MATERIAL (psid) (psi) (psi)

HYDA5412215T Brass 6000 6750 10 000

HYDA5420315T Cres 8000 9600 12 000

12

K

Kipster

MATERIALSPART MATERIAL

Body and Spring Cres

Sensing Element Inconel

PERFORMANCE

MODEL K1 K2 K3

Part Number KIPA1810112K KIPA1810221K KIPA1810330K

PressureRange (psi) 4 000 - 12 000 7 000 - 21 000 10 000 - 30 000

Accuracy

±% of full scale 3 2.5 3

± psi 360 525 900

CAD990

13

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KIPSTER DEFLECTION PROFILE


Installation/Extraction Tool Part Number ....... RTTA1870100

Dial Gauge and Calibration BlockTool Set Part Number .................................... RTTA1870150

Pressure Measurement Procedures .............. See Page L36

Kipster

1

L

❑ Installation Procedures

❑ Extraction Procedures

❑ Tools for Installation and Extraction

❑ Oversize Part Numbers

❑ Guidelines for Boss Size

❑ Adapters for Stacking Inserts

Installation

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TABLE OF CONTENTS

Lee Inspection & Handling ...................... 3Plugs Installation .................................. 4 – 5

Extraction ................................... 6 – 7Oversize & Tool Part Number .. 8 – 12Plug Size Charts .................... 13 – 14R.F.O. .................................... 15 – 18

Lee Boss Size ....................................... 19Inserts Dual Insert Adapter ........................ 20

Installation & Extraction ......... 21 – 253- Port Inserts ........................ 26 – 27

CartridgeVisco Jets ............................................... 28 – 31

LeeMicrojet ....................................................... 32

Safety L4 ........................................... 33 – 34Screens Spring Retained ............................. 35

TWIS .............................................. 35

Kipster ....................................................... 36

Introduction Installation

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InstallationLeePlugs

INSPECTION AND HANDLINGWhen measuring the O. D. of the Plug, a micrometershould be used on the front or solid end of the Plugto eliminate errors in readings due to permissiblegroove burrs. Groove burrs are left on the O.D. ofPlugs to 0.001" over maximum diameter. This in-creases the proof pressure.

Manufacturing tolerances are closer than those shownfor inspection in this handbook. Inspection drawingsare freely available for all Lee components.

All dimensions are statistically checked. Key dimen-sions are 100% checked, and all plugs and pins are100% visually inspected.

Lee Plug pins are pre-waxed, and must not bedegreased. In addition, Lee Plug sets should not bestored at temperatures exceeding 150°F to avoidwax coating loss. Pin handling should be kept to aminimum.

Aluminum Lee Plugs are color coded to assure easyand foolproof identification between the standardsize, oversize, and metric plugs. The standard 2024aluminum plugs are green, the oversize aluminumplugs are red, and the metric aluminum plugs arebrown. Standard and oversize stainless steel LeePlugs are clearly marked on their packaging.

All Lee Plugs are manufactured and controlled bylots. These lot numbers are marked on the bags forplugs and pins and correspond to bar material certi-fications from the mill, which are on file at The LeeCompany. In addition, certification of performancetesting is included with every shipment of plugs.

1

2.

3.

4.

5.

6.

4

L

INSTALLATION TOOLSThe Lee Company offers a complete line of installationtools (see table starting on page L8).

1. The installation hole and O. D. of the plug shouldbe clean and dry.

2. Insert the plug into the hole until it is firmly seatedagainst the shoulder of the reamed hole.

3. The pins are factory pre-waxed for easy installa-tion. Additional lubrication must not be used.

4. Start the smaller chamfered end of the pin into thetapered hole. Avoid tilting the pin.

5. Firmly support the item to be plugged.

6. Press or drive the pin until the exposed end of thepin is flush with the exposed end of the plug.

PLUG INSTALLATION TOOL

INSTALLATION METHOD


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FLUSHNESS TOLERANCES

Long Series Lee Plug Short Series Lee Plug

Into Plug 0.010 in. Into Plug 0.003 in.Out of Plug 0.005 in. Out of Plug 0.005 in.

PRE-ASSEMBLYIt is not advisable to partially insert the Pin into the Plugas a pre-assembly before installing the Plug in thereamed hole. This has a tendency to expand the Plug,and on insertion cause longitudinal scratch marks in thereamed hole, which can cause undesirable leakage.

INSTALLATION FORCES


Lee Plugs are usually a slip fit in the reamed holes.Push fits can be encountered when the hole size isless than the permissible groove burr diameter.

Always make sure that the Plug has been insertedfirmly against the shoulder of the reamed hole. If thisis not done, the Plug may slide forward while the Pinis being driven and cause longitudinal scratch marksin the reamed hole.

The work required to expand and lock the Plugcomes from the drive force and the distance the Pinis driven. Therefore, on the larger sizes the driveforces are understandably higher.

Pins may be driven into the plugs using an arborpress, hydraulic press, or hammer. When using ahammer, a few firm blows is preferable to a series oflight taps.

1.

2.

3.

4.

6

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EXTRACTION TOOLSThe design of Lee Plugs ensures permanent leak-tightsealing by controlled expansion. This feature also allowsfor convenient extraction should access to the internalpassageways be required at any time.

The Lee Company maintains a stock of extraction toolsfor all sizes of Lee Plugs. Each set is comprised of tapsets for pin and plug, removal bolts for pin and plug, andstriker(s) (see table on page L8).

Using the correct tooling will ensure the reamed holeremains undamaged and uncontaminated. Holes shouldbe inspected after Lee Plug extraction, since it is fre-quently possible to reuse the hole directly without ma-chining to the next oversize. A new pin and plug shouldalways be used.

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EXTRACTION METHOD

1. Drill and tap a hole in the Pin.2. Extract the Pin using the bolt and striker.3. Tap the Plug.4. Extract the Plug using the appropriate bolt and

striker.

OVERSIZEThe Lee Company stocks a full line of Oversize LeePlugs. These Plugs are for rework or salvage of reamedholes. For each standard inch size there is an oversizeLee Plug which has all of the same dimensions, exceptthe O.D. is 0.010 inch larger than the standard. The proofpressures are the same. The part numbers are shown inthe table starting on page L8. When using oversize LeePlugs, pick the maximum and minimum ream diametersfor the appropriate class of fit. Then add 0.010 inch toboth the maximum and minimum diameters shown onthe tables in section A.

Metric Lee Plugs provide additional intermediate plugsizes for repair work. The chart on page L13 lists bothinch and metric plug diameters in inches to help in theselection process. The chart on page L14 lists plugdiameters in millimeters so that inch size plugs can beselected for rework of metric plug holes.

LEE PLUG PROCESS SPECIFICATIONDetails of all the practical aspects of using Lee Plugsare given in our Process Specification 203. Contact TheLee Company for a complimentary copy.

VIDEO TAPEA complete video guide to installation and extraction ofLee Plugs is available upon request.

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LEE PLUG LEE PLUG INSTALLATION EXTRACTIONSTANDARD OVERSIZE TOOL TOOL SET

PART NUMBER PART NUMBER PART NUMBER PART NUMBER

PLGA0930010A PLGA1030010A


PLGA0931010A PLGA1031010A CUTA0930203A CUTA0930103B



PLHA0931241A PLHA1031241A



















TOOL SET AND OVERSIZEPART NUMBERS

InstallationInch SizeLee Plugs

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TOOL SET AND OVERSIZEPART NUMBERS

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PLGA3431010A PLGA3531010ACUTA3430203A CUTA3430103B





PLGA4060020A PLGA4160020A CUTA4060103B


CUTA4060303A


PLGA4061400A PLGA4161400A CUTA4060203B












PLGA6560020A PLHA6660020A




TOOL SET AND OVERSIZE PART NUMBERS


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METRIC LEE PLUGTOOL SET PART NUMBERS

METRIC INSTALLATION EXTRACTIONLEE PLUG TOOL TOOL SET

PART NUMBER PART NUMBER PART NUMBER

InstallationMetric SizeLee Plugs

PLGM0250010A

PLGM0250020A

PLGM0300010A

PLGM0300020A

PLGM0350010A

PLGM0350020A

PLGM0400010A

PLGM0400020A

PLGM0401010A

PLGM0401020A

PLGM0450010A

PLGM0450020A

PLGM0451010A

PLGM0451020A

PLGM0500010A

PLGM0500020A

PLGM0501010A

PLGM0501020A

PLGM0550010A

PLGM0550020A

PLGM0551010A

PLGM0551020A

CUTA0930203A CUTM0250103B







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METRIC INSTALLATION EXTRACTIONLEE PLUG TOOL TOOL SET

PART NUMBER PART NUMBER PART NUMBER

PLGM0600010A

PLGM0600020A

PLGM0601010A

PLGM0601020A

PLGM0650010A

PLGM0650020A

PLGM0651010A

PLGM0651020A

PLGM0700010A

PLGM0700020A

PLGM0701010A

PLGM0701020A

PLGM0750010A

PLGM0750020A

PLGM0751010A

PLGM0751020A

PLGM0800010A

PLGM0800020A

PLGM0801010A

PLGM0801020A






METRIC LEE PLUGTOOL SET PART NUMBERS

InstallationMetric SizeLee Plugs

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REAM "A" MINIMUM DIAMETER SHORT LONG

PART NUMBER (CLASS 3) PLUGS PLUGS

PLGA093 - - - - 0.0937 – 0.0942 0.097 0.145PLGM025 - - - - 0.0984 – 0.0989 0.107 —PLGA103 - - - - 0.1037 – 0.1042 0.097 0.145PLGM030 - - - - 0.1181 – 0.1186 0.123 —PLGA125 - - - - 0.1250 – 0.1255 0.125 0.195PLGA135 - - - - 0.1350 – 0.1355 0.125 0.195PLGM035 - - - - 0.1378 – 0.1383 0.134 —PLGA156 - - - - 0.1562 – 0.1567 0.130 0.250PLGM040 - - - - 0.1575 – 0.1580 0.154 0.260PLGA166 - - - - 0.1662 – 0.1667 0.130 0.250PLGM045 - - - - 0.1772 – 0.1777 0.170 0.280PLGA187 - - - - 0.1875 – 0.1880 0.152 0.253PLGM050 - - - - 0.1968 – 0.1973 0.186 0.300PLGA197 - - - - 0.1975 – 0.1980 0.152 0.253PLGM055 - - - - 0.2165 – 0.2170 0.201 0.319PLGA218 - - - - 0.2187 – 0.2192 0.187 0.312PLGA228 - - - - 0.2287 – 0.2292 0.187 0.312PLGM060 - - - - 0.2362 – 0.2367 0.217 0.339PLGA250 - - - - 0.2500 – 0.2505 0.212 0.352PLGM065 - - - - 0.2559 – 0.2564 0.237 0.359PLGA260 - - - - 0.2600 – 0.2605 0.212 0.352PLGM070 - - - - 0.2756 – 0.2761 0.252 0.378PLGA281 - - - - 0.2812 – 0.2817 0.250 0.375PLGA291 - - - - 0.2912 – 0.2917 0.250 0.375PLGM075 - - - - 0.2953 – 0.2958 0.268 0.398PLGA312 - - - - 0.3124 - 0.3129 0.269 0.423PLGM080 - - - - 0.3150 – 0.3155 0.284 0.418PLGA322 - - - - 0.3224 - 0.3229 0.269 0.423PLGA343 - - - - 0.3437 – 0.3442 0.295 0.437PLGA353 - - - - 0.3537 – 0.3542 0.295 0.437PLGA406 - - - - 0.4062 – 0.4067 0.325 0.500PLGA416 - - - - 0.4162 – 0.4167 0.325 0.500PLGA468 - - - - 0.4687 – 0.4692 0.350 0.562PLGA478 - - - - 0.4787 – 0.4792 0.350 0.562PLGA531 - - - - 0.5312 – 0.5317 0.486 0.625PLGA541 - - - - 0.5412 - 0.5417 0.486 0.625PLGA656 - - - - 0.6562 - 0.6567 0.490 0.685PLGA666 - - - - 0.6662 - 0.6667 0.490 0.685

Unshaded = "Hard" Dimensions Shaded = "Soft" Dimensions


COMMON LEE PLUG SIZES (INCHES)

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Metric SizeLee Plugs Installation

REAM "A" MINIMUM DIAMETER SHORT LONG

PART NUMBER (CLASS 3) PLUGS PLUGSPLGA093 - - - - 2,38 – 2,39 2,5 3,7PLGM025 - - - - 2,50 – 2,51 2,7 —PLGA103 - - - - 2,635 – 2,645 2,5 3,7PLGM030 - - - - 3,00 – 3,01 3,1 —PLGA125 - - - - 3,175 – 3,185 3,2 5,0PLGA135 - - - - 3,43 – 3,44 3,2 5,0PLGM035 - - - - 3,50 – 3,51 3,4 —PLGA156 - - - - 3,97 – 3,98 3,4 6,4PLGM040 - - - - 4,00 – 4,01 3,9 6,6PLGA166 - - - - 4,22 – 4,23 3,4 6,4PLGM045 - - - - 4,50 – 4,51 4,3 7,1PLGA187 - - - - 4,765 – 4,775 3,9 6,5PLGM050 - - - - 5,00 – 5,01 4,7 7,6PLGA197 - - - - 5,02 – 5,03 3,9 6,5PLGM055 - - - - 5,50 – 5,51 5,1 8,1PLGA218 - - - - 5,56 – 5,57 4,8 8,0PLGA228 - - - - 5,81 – 5,82 4,8 8,0PLGM060 - - - - 6,00 – 6,01 5,5 8,6PLGA250 - - - - 6,35 – 6,36 5,4 9,0PLGM065 - - - - 6,50 – 6,51 6,0 9,1PLGA260 - - - - 6,61 – 6,62 5,4 9,0PLGM070 - - - - 7,00 – 7,01 6,4 9,6PLGA281 - - - - 7,145 – 7,155 6,4 9,6PLGA291 - - - - 7,40 – 7,41 6,4 9,6PLGM075 - - - - 7,50 – 7,51 6,8 10,1PLGA312 - - - - 7,94 – 7,95 6,9 10,8PLGM080 - - - - 8,00 – 8,01 7,2 10,6PLGA322 - - - - 8,19 – 8,20 6,9 10,8PLGA343 - - - - 8,73 – 8,74 7,5 11,1PLGA353 - - - - 8,99 – 9,00 7,5 11,1PLGA406 - - - - 10,32 – 10,33 8,3 12,8PLGA416 - - - - 10,57 – 10,58 8,3 12,8PLGA468 - - - - 11,91 – 11,92 8,9 14,3PLGA478 - - - - 12,16 – 12,17 8,9 14,3PLGA531 - - - - 13,495 – 13,505 12,4 15,9PLGA541 - - - - 13,75 – 13,76 12,4 15,9PLGA656 - - - - 16,67 – 16,68 12,5 17,4PLGA666 - - - - 16,92 – 16,93 12,5 17,4

Unshaded = "Hard" Dimensions Shaded = "Soft" Dimensions

COMMON LEE PLUG SIZES (mm)

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R.F.O. LEE PLUGINSTALLATION

InstallationR.F.O.Lee Plugs

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INSTALLATION METHODR.F.O. Lee Plugs are installed with Lee R.F.O. HydraulicInstallation Tool CUTX0100000B and the appropriateInstallation Tool Set (see table, page L18).


Slide the drive sleeve over the stud. Thread the studcompletely onto the driving piston.

Slide the pin onto the stud with the smaller end of thepin pointing away from the stud.

Thread the R. F. O. plug onto the stud approximately7 turns, until finger tight.

Slide the plug into the reamed hole to the desireddepth.

Operate the hand pump to drive the pin into the plug.Drive the pin until the rear surface of the pin is flush withthe back edge of the plug.

Release the pump pressure and the piston will retract.

To disengage the stud turn the driving piston assemblycounterclockwise. The swivel fitting will prevent thehose from twisting.

1.

2.

3.

4.

5.

6.

7.

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HYDRAULIC INSTALLATION TOOL

PART NUMBER: CUTX0100000B

EXTRACTION METHODR.F.O. Lee Plugs can be extracted with Lee R.F.O.Hydraulic Installation Tool CUTX0100000B and theappropriate Extraction Tool Set (see table, page L18).


Select the proper extraction sleeve and stud for theR.F.O. plug being removed.

After sliding the extraction sleeve onto the stud,thread the stud into the piston assembly until bot-tomed snugly.

Thread the other end of the stud fully into the R.F.O.pin. The swivel fitting prevents the hose from twisting.For 0.156 inch diameter through 0.260 inch diameterR.F.O.'s, pins must first be threaded using the tapsupplied in the extraction tool set.

Operate the pump to extract the pin.

Thread the bolt, with the striker, fully into the R.F.O.plug and remove the plug by tapping the strikeragainst the bolt head.

1.

2.

3.

4.

5.

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R.F.O. PLUG R.F.O. PLUG INSTALLATION EXTRACTIONSTANDARD OVERSIZE TOOL SET TOOL SET


PLRA1560010A PLRA1660010A CUTA1565205A CUTA1566205B













R.F.O. PLUG TOOL SETAND OVERSIZE PART NUMBERS

The pump, the hose, the swivel fitting, the gauge and thedrive piston assembly can be ordered with part numberCUTX0100000B. Order the appropriate installation andextraction tool sets separately.

When using oversize Lee Plugs, pick the maximum andminimum ream diameters for the appropriate class of fit,then add 0.010 inch to both the maximum and minimumdiameters shown on the tables in Section A.


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Inserts InstallationINSERT BOSS SIZE*The installation of a Lee insert in a hydraulic manifoldwith the Lee tapered expander principle produces a highretention force, a leak tight seal, and low stress in themanifold. As with the Lee Plug, alternate lands andgrooves on the O.D. of the Lee insert produce localplastic deformation and interlocking with the manifold toform the seals. The discontinuous bands of stress rap-idly average out to a uniform stress as we examine thesurrounding material. To assure that the stress in themanifold is below 40% of its yield strength (a customarydesign standard), and to assure maximum retention ofthe Lee insert, the minimum D/d ratios shown on graph(below) should be observed.

For more detailed analysis ask for your complimentarycopy of our DOS compatible P.C. software "Boss StressCalculations".* See pages A9-A10 for Lee Plug boss size.

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NO CROSSPORT

WITH CROSSPORT

DUAL INSERT ADAPTERSIt is now possible to stack two Lee inserts of the samediameter in series with the use of the Lee Dual InsertAdapter. The Adapter eliminates the need to machine anadditional shoulder, which normally would be required toplace a second insert behind the first. The second insertis no longer required to be of a larger diameter than thefirst, allowing for a smaller boss. Machining is simplified,and space and weight are reduced.

Dual Insert Adapters are available for 0.187 inch and0.281 inch diameter Lee inserts, and are offered in twoversions: one with crossport flow capability and theother without. They are not to be used in conjunction withLee Plugs.

TYPICAL INSTALLATION

Inserts Installation

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BODY TOOL

PIN EXTRACTION TOOL

PIN INSTALLATION TOOL

STRIKER

SIDE VIEW FRONT VIEW

INSTALLATION AND EXTRACTION OFLEE INSERTSLee Inserts utilize the principle of controlled expansionwhich employs a tapered expander pin and a body withan internal taper, and lands and grooves on the outside.When the pin is pressed into the body, the lands "bite"into the surrounding material to seal and lock the insertin place. The body and pin of most inserts have internalthreads to facilitate installation and extraction.

The Lee Company provides an installation/extractiontool kit at minimal cost as a service to our customers.The kit contains a body tool, a pin extraction tool, a pininstallation tool and a striker.


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INSTALLATION METHOD

EXTRACTION METHOD

For a more detailed installation and extraction proceduresee Process Specification 187 which is available uponrequest from The Lee Company.

REINSTALLATIONWith reasonable care, Lee inserts are reusable withoutfurther machining until the fifth or sixth insertion/ removalcycle. A new pin should be used for every new installa-tion. When an installation hole is no longer servicable, re-ream to 0.010 inch over the original size (same depth andsame tolerances) and use an oversize insert. An over-size version of all Lee inserts is available. (NOTE: HighPressure inserts can not be reinstalled in aluminum.)

OVERSIZETo order an oversize part, the part number for the standardsize part must be modified to indicate 0.010 inch oversize.The diameter is signified by the first three numbers in thepart number:


Thread the insert body onto the body tool.

Push the insert firmly into the reamed hole until it isseated against the 45° shoulder. Remove the bodytool.

Thread the pin completely onto the pin installationtool.

Drive the pin into the body until the pin is flush withthe body to within ± 0.005 inch.

1.

2.

3.

4.

Slide the striker onto the pin extraction tool andthread it completely into the pin.

Strike the head of the pin extraction tool with thestriker until the pin is removed.

Repeat steps 1 & 2 using the body bolt and a strikerto remove the insert body.

1.

2.

3.

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BODY DIA. INST. / EXTR. PIN BODYSTANDARD/ TOOL KIT INST. /EXTR. INST. / EXTR.OVERSIZE PART NUMBER THREAD SIZE THREAD SIZE

0.125 / 0.135 CUTA1250306C 0.073 – 64* 0.112 – 40*CUTA1250801C 0.086 – 56* 0.086 – 56*

0.187 / 0.197 CUTA1870104C 0.112 – 40 0.164 – 36CUTA1870109C 0.112 – 40 0.112 – 40CUTA1870110C 0.112 – 40 0.125 – 40CUTA1870128C 0.112 – 40 0.099 – 48CUTA1870210C 0.112 – 40 0.125 – 40CUTA1870306C 0.112 – 40 0.164 – 36*CUTA1870801C 0.112 – 40* 0.190 – 32 MOD*CUTA1870904C 0.086 – 56 0.156 – 36

0.250 / 0.260 CUTA2500106C 0.138 – 40 0.216 – 28CUTA2000113C 0.125 – 40 0.125 – 40CUTA2500306C 0.164 – 36 0.164 – 36CUTA2500406C 0.164 – 36 0.164 – 36CUTA2500801C 0.164 – 36* 0.250 – 20 MOD*

0.281 / 0.291 CUTA2810104C 0.164 – 36 0.216 – 28CUTA2810114C 0.138 – 40 0.250 – 48

0.343 / 0.353 CUTA3430106C — 0.125 – 400.375 / 0.385 CUTA3750106C 0.250 – 32 0.250 – 32

CUTA3750114C 0.250 – 32 0.325 – 40CUTA3750214C 0.250 – 32 0.325 – 40CUTA3750306C 0.250 – 32 0.250 – 32

0.500 / 0.510 CUTA5000106C 0.375 – 24 0.3125 – 24CUTA5000116C 0.375 – 24 0.4375 – 28CUTA5000206C 0.3125 – 24 0.3125 – 24CUTA5000306C 0.375 – 24 0.375 – 24

* Not threaded. Tool set includes tapset.

EXAMPLESSTANDARD PART NUMBER OVERSIZE PART NUMBER

CHFA1256505A CHFA1356505AJETA1872800L JETA1972800LCKFA2506205A CKFA2606205APRFA2812080L PRFA2912080LFCFA3755070L FCFA3855070LFLFA5001350D FLFA5101350D

When using oversize inserts, add 0.010 inch to both themaximum and minimum diameter of the installation hole. Allother dimensions remain the same as the standard size.


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PIN JACKING TOOLSIf the installation hole is not reamed correctly, or thehousing material is soft, the body and pin are occasion-ally extracted as an assembly when trying to removeonly the pin. This condition may produce a reamed holewhich is unacceptable for reinstallation of Lee HydraulicInserts. To eliminate this possibility, The Lee Companyalso offers pin jacking tools which gently remove the pinby reacting the pin extraction forces on the exposed faceof the body, thereby more effectively preserving theintegrity of the insert and the reamed hole.

There are two types of pin jacking tools, a T-Handle PinJacking Tool and a stud and sleeve set that works witha standard rivet tool.


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PIN EXTRACTION METHOD • T-HANDLE

PIN EXTRACTION METHOD • RIVET TOOL

Run the drive nut up the drive shaft until the extractor studthreads are clear of the extractor guide sleeve.

Engage the extractor stud threads with the mating pinthreads.

Hold the T-handle to prevent the stud from turning, and runthe drive nut down the drive shaft thread until the face of theextractor guide sleeve bears against the exposed face ofthe insert body.

While grasping the T-handle with the left hand, use an open-end wrench to turn the drive nut in a counterclockwisedirection.

Diminished drive nut wrenching force indicates pin is free.

1.

2.

3.

4.

5.

Thread the stud into the pin to be removed.

Slide the sleeve down over the stud until it is seated againstthe end of the body.

Engage the pin end of the stud with a rivet tool and squeezethe handle until the pin is free.

1.

2.

3.


INST. / EXTR. T-HANDLE RIVET TOOLBODY TOOL KIT PIN JACKING PIN JACKING

DIAMETER PART # TOOL PART # TOOL PART #

0.187 / 0.197 CUTA1870104CCUTA1870110C CUTA1870204B CUTA1870404BCUTA1870128CCUTA1870306C

0.250 / 0.260 CUTA2500106C CUTA2500206B CUTA2500313BCUTA2000113C CUTA2000213B CUTA2500706BCUTA2500306C CUTA2500806B CUTA2500606B

0.281 / 0.291 CUTA2810114C CUTA2810214B CUTA2810314B

0.375 / 0.385 CUTA3750106C CUTA3750206B ——

0.500 / 0.510 CUTA5000106C CUTA5000216B ——CUTA5000116C CUTA5000216B ——

Rivet Gun Part Number ............. CUTA1870504B

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INSTALLATION & EXTRACTIONOF 3-PORT INSERTS3-port inserts require an additional seal beyond thenormal locking end. This is accomplished with a "noseseal" that requires slightly different installation and ex-traction procedures.

The nose seal works in the same manner as a lockingend except a tapered section of the insert body acts asthe tapered pin. The nose seal rests on a 45° shoulderand is expanded as the body is pressed down into theinstallation hole.

INSTALLATION METHOD

Installation3-PortInserts

Thread the insert body onto the body installation tool.

The insert body must be installed using a controlledforce. This ensures correct expansion of the noseseal and proper seating of the part.

Remove the body installation tool.

Thread the pin onto the pin installation tool.

Drive the pin into the body until the pin is flush with thebody to within ± 0.005 inch.

1.

2.

3.

4.

5.

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BODY DIA. INST./EXTR. PIN BODYSTANDARD/ TOOL KIT INST./EXTR. INST./EXTR.OVERSIZE PART NUMBER THREAD SIZE THREAD SIZE

0.187 / 0.197 CUTA1870137C 0.112 - 40 0.138 - 40

0.281 / 0.291 CUTA2810137C 0.138 - 40 0.250 - 48

0.500 / 0.510 CUTA5000137C 0.250 - 32 0.4375 - 28

EXTRACTION METHOD

REINSTALLATIONWith reasonable care, 3-Port inserts are reusable with-out further machining until the fifth or sixth insertion/removal cycle. A new pin and a new nose seal must beused for every new installation. When an installationhole is no longer serviceable, re-ream to 0.010 inch overthe original size (same depth and same tolerances) anduse an oversize insert.

Installation3-PortInserts

Remove the pin by using one of the previouslydescribed pin removal methods.

Slide the striker onto the body extraction tool andthread it into the body.

Strike the head of the body extraction tool with thestriker until the body is removed.

Use the nose seal removal tool to remove the noseseal. Discard used pin and nose seal.

For a more detailed installation and extractionprocedure see Process Specification 187.

1.

2.

3.

4.

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INSTALLATION FOR NORMALTEMPERATURE OPERATIONFor temperatures from -65° to 300°F install the ViscoJets as shown below. For other temperatures see "In-stallation for High and Low Temperature Operation" onthe following pages.Note: The "A" Washer is a separate piece to facilitate theinstallation of the "O" rings.

VDCA43SERIES

VDCA68SERIES

VDCA14SERIES

InstallationViscoJets

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INSTALLATION FOR HIGH AND LOWTEMPERATURE OPERATIONThe "B" washer is used whenever a metal "O" ring isused because of the axial forces required to compressthe ring. The "B" washer may also be used with elas-tomer rings if the customer prefers this method in lieu ofa snap ring.

For installation prepare the hole as shown on the followingtwo pages. Place the Visco Jet assembly with the "O"ring into the reamed hole and thread in the "B" washer.Lock in place as shown on page L31.


43 SERIES

68 SERIES

14 SERIES

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HIGH & LOW TEMPERATURE OPERATIONRECOMMENDED HOLE DIMENSIONS


43 SERIES

14 SERIES

68 SERIES

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Cut the locking groove with a 0.12 inch diameter end mill to2 x thread height.

Start the cut 0.06 inch before the lip edge of the "B" washer(see "A" dimension) at an approximate 30° angle. (All "B"washers are supplied with the necessary lip for locking.)

Using a punch or similiar tool, expand the section of the "B"washer above the groove, into the locking groove.

For removal, the lip may be pried up.

1.

2.

3.

4.


VISCO LOHM "A" * "B" THREADSSERIES RATE DIM. O-RING DIAMETER MAX. DIST."C"

43 32 600 0.66 Metal (Stn. .500-20 UNF 0.43Series 46 000 0.66 Stl.) Plated Thread 0.43

56 500 0.80 (Silver) per (0.453 Dia. 0.5665 000 0.80 AMS7325A Tap Drill) 0.5673 000 0.80 0.56

68 8 800 1.06 Metal (Stn. 0.750-16 UNF 0.70Series 12 400 1.06 Stl.) Plated Thread 0.70

15 200 1.28 (Silver) per (0.688/0.690 0.9217 600 1.28 AMS7325A Dia. Tap 0.9219 600 1.39 Drill) 1.03

14 4 000 0.87 Metal (Stn. 1.375-18 0.35Series 5 650 1.09 Stl.) Plated UNF Thread 0.56

6 930 1.30 (Silver) per (1.328 Dia. 0.788 000 1.52 AMS7325A Tap Drill) 0.998 900 1.73 1.21

*Total mounting length of cartridge to lip edge of "B" washer

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LeeMicroJet Installation

SLEEVE INSTALLATION/EXTRACTION

TOOL

INSTALLATION PROCEDURE1.

2.

3.

4.

5.

Lubricate the Microjet O-Ring with fluorosiliconecompatible lubricant.

Insert the Microjet nose first into the sleeve, partnumber CUTA2711204A, from the flange end. Besure the Microjet is pressed into the sleeve squarelyto prevent the O-Ring from being pinched.

Insert the sleeve and Microjet into the installationhole until it bottoms. The sleeve will align the Microjetwith the installation bore.

Using the installation end of tool part numberCUTA2711104C, gently press the Microjet throughthe sleeve and into its installation area until itbottoms out.

Remove the tool and sleeve.

EXTRACTION PROCEDURE1.

2.

3.

Insert the extract ion tool part numberCUTA2711104C, into the I.D. of the Microjet.

Engage the raised lip of the tool into the undercut inthe I.D. of the Microjet body.

Gently pull the Microjet with the tool from its installa-tion hole.

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L-4 InstallationSafetyScreens

INSTALLATION & EXTRACTIONOF L-4 SAFETY SCREENSThe L-4 locking end is a retention system that allows installa-tion in a bore without the need for a support shoulder. Thebasic principle of L-4 utilizes a tapered pin to expand threewings in the bore. The wings have lands that positively lock thedevice in place. Once tightened the self-locking expander pinwill not loosen.

The L-4 installation/extraction tool set consists of an extractorrod and a socket wrench.

INSTALLATION METHOD1. Insert the extractor rod through the socket wrench.

2. Thread the extractor rod onto the expander pin of thesafety screen.

3. Push the safety screen into the bore until the properdepth is reached.

4. Turn the socket wrench in a clockwise direction untilfinger tight.

EXTRACTOR ROD

END VIEW SOCKET WRENCH

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SCREEN TOOL SET SOCKET WRENCH TORQUEDIAMETER PART NUMBER EXTERNAL HEX (in - lbs)

.187 CUTA1870528C .250 3.5 – 4.5

.281 CUTA2810528C .312 10 – 14

L-4 SafetyScreens Installation

5. Remove the extractor rod by rotating in a counterclockwise direction while holding the socketwrench.

6. Use a torque wrench with the socket wrench.

7. Torque to the value in the table below.

8. Remove the socket wrench.

EXTRACTION METHOD1. Insert the extractor rod through the socket wrench.

2. Thread the extractor rod onto the expander pin ofthe safety screen.

3. Turn the socket wrench in a counter clockwisedirection using a wrench (see table for size).

4. When the assembly becomes loose, extract thescreen from the bore.

5. Remove the extractor rod by rotating in a counterclockwise direction while holding the socketwrench.

REINSTALLATIONAfter cleaning and inspection, the L-4 safety screen maybe reused.

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SPRING RETAINED SAFETY SCREENINSTALLATION & EXTRACTION

TWIS SAFETY SCREEN INSTALLATIONAND EXTRACTION METHOD

InstallationSpring RetainedSafety Screens

1.

2.

3.

4.

5.

Insert the screen assembly into the machined mount-ing hole with the screen base washer firmly seatedagainst the shoulder.

Slip the spring tang into the slots of the insertion tool,CUTA1700128C, and engage by turning it counter-clockwise.

Press the spring against the chamfer of the mount-ing hole. Maintain pressure while rotating the toolin a counterclockwise direction. Continue rotationuntil the spring seats solidly on the safety screenbase washer. Disengage the installation tool andremove it.

The safety screen assembly is now retained by thecompressed torsion spring.

For inspection or removal, engage the tool with thespring tang and continue to rotate counterclockwisewhile extracting the spring.

1.

2.

3.

4.

Screw the screen assembly into the end of theinsertion tool CUTA1870228C.

Twist clockwise (5 in.- oz. torque) with the insertiontool while pushing the assembly into the reamedhole (0.25 lbs. axial force required).

When the screen is seated against the shoulder,unscrew the insertion tool.

To remove the screen assembly for cleaning or in-spection, screw the insertion tool all the way onto thescreen assembly, then continue turning clockwisewhile pulling the screen assembly from the hole.

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KIPSTER INSTALLATION/EXTRACTIONAND PRESSURE MEASUREMENT

Kipster Installation

1.

2.

3.

4.

5.

6.

7.

8.

Screw the Kipster onto the end of installation toolRTTA1870100.

Twist clockwise (5 in. - oz. torque) with the installa-tion tool while pushing the assembly into the reamedhole (0.25 lbs. axial force required).

When the part is at the desired depth, unscrew theinstallation tool.

When installed, the assembly is capable of with-standing an axial force of 8 lbs.

To remove the Kipster for peak pressure measure-ment, screw the installation tool onto the Kipster.Continue to turn in a clockwise direction and pull untilthe Kipster is extracted from the hole.

The Kipster, once retracted, can be removed fromthe tool for measurement.

Using the dial gauge and zeroing block from tool setRTTA1870150, zero the dial gauge, then measurethe depth of the dimple.

Referring to the deflection profile on page K13, readthe pressure using the appropriate temperature curve.

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❑ Liquid Flow Equations

❑ Gas Flow Equations

❑ Design Information

❑ Reference Information

❑ Conversion Factors

❑ Graphic Symbols

❑ Definitions

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EngineeringTABLE OF CONTENTS

Lohm LawsDefinition ................................................................. 3 – 4Liquid Flow ........................................................... 5 – 17Hydraulic Power ................................................. 18 – 19Temperature Rise in Hydraulic Fluids ................ 20 – 21Momentum Forces ...................................................... 22Water Hammer ........................................................... 23Bulk Modulus ...................................................... 24 – 28Cavitation ............................................................ 29 – 31Gas Flow ............................................................ 32 – 46Momentum Forces - Gas Flow ................................... 47Transient Gas Flow ............................................ 48 – 49Temperature Change in Gas Flow ..................... 50 – 51Pneumatic Power ............................................... 52 – 53Gas Properties ............................................................ 54

ROB NumberDefinition ............................................................. 55 – 57Table of Single Orifice ROB Numbers ................. 58 – 59

Contamination Control ................................... 60 – 64

Pressure Ratings .............................................. 65 – 71

Reference InformationPrimary Standards ...................................................... 72Conversion Factors ............................................ 73 – 81Graphic Symbols ................................................ 82 – 85Metric Dimensions of Lee Inserts ............................... 86Definitions of Viscosity ............................................... 87

General InformationMarking of Standard Lee Inserts ................................ 88Policy for Specially Fabricated Parts,

Proprietary Rights ................................................... 89Trademarks of The Lee Company ...................... 90 – 91Patents, Trademarks, Copyrights, Warranty .............. 92Directory of Technical Publications ............................ 93

NOTE: Many of the solutions to engineering problemsfound in this section are available on diskette for DOSCompatible Personal Computers. (See page M93)

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DEFINITION

Every engineer will be interested in our simple system ofdefining the fluid resistance of Lee hydraulic compo-nents.

Just as the OHM is used in the electrical industry, we findthat we can use a liquid OHM or "Lohm" to goodadvantage on all hydraulic computations.

When using the Lohm system, you can forget aboutcoefficients of discharge and dimensional tolerances ondrilled holes. These factors are automatically compen-sated for in the Lohm calculations, and confirmed bytesting each component to establish flow tolerances.The resistance to flow of any fluid component can beexpressed in Lohms.

The Lohm has been selected so that a 1 Lohm restrictionwill permit a flow of 100 gallons per minute of water witha pressure drop of 25 psi at a temperature of 80° F.

The graph on the following page relates Lohms to holediameter.

LohmLaws Engineering

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LOHM RATE VERSUS ORIFICE DIAMETER

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L = and I =

When testing on water at 25 psi ∆P, H = 5and the above formulas simplify as follows:

100 100I L

Some useful relationships:

1. 1000 Lohms will permit a flow of 50 lb/hr water at25 psi ∆P.

2. Flow Coefficient, CV =

3. L = L = 0.527Cd A

20L

LIQUID FLOW

The Lohm has been selected so that a 1 Lohm restriction willpermit a flow of 100 gallons per minute of water with a pressuredrop of 25 psi at a temperature of 80°F.

I = Flow rate (gallons per minute).H = Differential pressure (psi).L = Lohms, a measure of resistance to liquid flow.

It includes all density, viscosity, Reynoldsnumber, coefficient of discharge & area units.

H HI L

I 2 x L2

400

L = 20 I = 20

H =

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Problem 2. A jet with a hole diameter of .012" flows 18 lb/hrof water at 100 psi ∆P. How many Lohms?

I = = 0.036 GPM

20 H 20 100 200I 0.036 0.036

Problem 3. What ∆P will be required to flow 20 GPH of waterthrough a 2000 Lohm Jet?

I = = 0.333 GPM

I 2 x L2 0.333 2 x 2000 2 0.111 x 4,000,000400 400 400

L = = = 8500 Lohms

Problem 1. What restriction will permit a flow of 1 gallon ofwater per hour at 50 psi ∆P?

I = 1/60 = 0.0167 GPM

20 H 20 50I 0.0167

20 H 20 500L 500

Problem 4. What water flow will result from a restriction of 500Lohms and a ∆P of 500 psi?

I = = = 0.894 GPM

NOTE:

1860 x 8.345

L = = = = 5500 Lohms

H = = = = 1110 psi ∆P

2060

LIQUID FLOW - EXAMPLES

For special flow requirements, The Lee Company candetermine the required Lohm rating.

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= + + = 0.00103 and thereforeLT = 970 Lohms

SERIES FLOW, the total Lohm rating is:

LT = L12 + L2

2 + L32 + … + LN

2

Please note that this relationship is not the same as in electricalproblems. The difference is due to the non-linearity of

H =

EXAMPLE: Series flow: L1 L2 L3

When L1 = L2 = L3 , then LT = L NN = Number of equal resistors in series

For passageway size: DT = D/ N1/4

DT = Diameter of a single equivalent orifice, with a Lohm rate = LT

D = Diameter of the actual orifices, each with a Lohm rate = L1

I2 L2

400

LIQUID FLOW - TWO FORMULASFOR COMBINATIONS OF RESTRICTORS

PARALLEL FLOW, the total Lohm rating is:

1 1 1 1 1LT L1 L2 L3 LN

Please note that this relationship is identical to theelectrical equation.

EXAMPLE: Parallel flow

L1 = 2000 LohmsL2 = 3000 LohmsL3 = 5000 Lohms

1 1 1 1LT 2000 3000 5000

= + + + … +

L1

L2

L3

L T = 20002 + 30002 + 50002 = 6160 Lohms

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∆P1 =

∆P2 =

=

LIQUID FLOW - SERIES FLOW

One of the reasons for using two restrictors in series is to allowfine tuning of a total resistance value. If L1 is known and is morethan 90% of LT, then L2 may vary by ±5% without altering thevalue of LT by more than ±1%, even though the value of L2 maybe as high as 40% of LT . This effect becomes even morepronounced as L1 approaches LT .

To determine the intermediate pressure between two resis-tances in series, the following formulas may be used.

∆PT

1 + (L2/L1)2

∆PT

1 + (L1/L2)2

L1 ∆P1

L2 ∆P2( )

2

∆PT

∆P1

L1 L2

L

FLOW

T

∆P2

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ML = HSKVw

LIQUID FLOW - FLOW FORMULA

The following formulas are presented to extend the use of theLohm laws to many different liquids, operating over a widerange of pressure conditions.

NOMENCLATURE

L = LohmsH = Differential pressureI = Liquid flow rate: VolumetricS = Specific gravity* (see page M16)V = Viscosity compensation factor** (see page M13)w = Liquid flow rate: GravimetricK = Units Constant – Liquid (see page M10)

*S = 1.0 for water at 80°F.**V = 1.0 for water at 80°F.

LIQUID FLOW

These formulas introduce compensation factors for liquid den-sity and viscosity. They are applicable to any liquid of knownproperties, with minimum restrictions on pressure levels ortemperature.

The units constant (K) eliminates the need to convert pressureand flow parameters to special units.

Volumetric Flow Units

Gravimetric Flow Units

KV HI S

L =

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VOLUMETRIC FLOW UNITS

Pressure Units

FlowUnits

GPM 20 76.2 7.62

L/min 75.7 288 28.8

ml/min 75 700 288 000 28 800

in3/min 4 620 17 600 1 760

GRAVIMETRIC FLOW UNITS

Pressure Units

FlowUnits

PPH 10 000 38 100 3 810

gm/min 75 700 288 000 28 800

KV HI S

LIQUID FLOW – UNITS CONSTANT K

L =

psi bar kPa

Volumetric Flow Units

L = HSKVw

psi bar kPa

Gravimetric Flow Units

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20 (0.95)0.15

HS

Problem 2. What pressure drop will result from a flow of 5 PPHof SAE #10 lubricating oil at 20°F, flowing through a 1000 Lohmrestrictor?

Solution:1. Read specific gravity and viscosity.

S = 0.90, v = 600cs.2. Use knowledge of system to assume solution.

H = 50 psid.3. Use assumed ∆P to determine V = 0.184. Select units constant, K = 10,000 from table on page M105. Compute trial ∆P.

H = = = 8.6 psid

6. Make trials as required to find correct solution.H = 26 psid.

w 2 L2 52 (1000)2

S K2 V 2 0.90 (10,000)2 0.18 2

LIQUID FLOW CALCULATIONS - EXAMPLES

Problem 1. A restrictor is required to flow 0.15 GPM ofMIL-H-83282 hydraulic fluid at 80°F and 100 psi ∆P. Whatrestriction is required?

Solution:1. Read specific gravity; S = 0.84 from chart on page M17.2. Read viscosity; v = 21cs. From chart on page M14.3. Use viscosity and ∆P to determine viscosity compensation

factor V = 0.95 from graph on page M13.4. Select units constant, K = 20 from table on page M10.

L = = = 1380 LohmsKVI

1000.84

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KVw

L = = = 25 Lohms Maximum

LIQUID FLOW – EXAMPLES

Problem 3. A Safety Screen is required to flow 775 lb/hr ofJP4 @ 80°F with a maximum pressure drop of 5 psid. Whatis the maximum Lohm rate allowed for the Safety Screen?

Solution:1. Find specific gravity; S = 0.77 from curve on page M16.2. Find viscosity; v = 1cs from curve on page M14.3. Use v and ∆P to determine viscosity compensation

factor, V = 1.0 from curve on page M13.4. Select units constant, K = 10,000 from table on page M10.

HS10000(1)

775 5(0.77)

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VISCOSITY COMPENSATION FACTORFOR SINGLE ORIFICE

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VISCOSITIES OFTYPICAL FLUIDS vs TEMPERATURE

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VISCOSITIES OFTYPICAL FLUIDS vs TEMPERATURE

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SPECIFIC GRAVITY OFTYPICAL FLUIDS vs TEMPERATURE

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SPECIFIC GRAVITY OFTYPICAL FLUIDS vs TEMPERATURE

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Whenever there is flow through an orifice, there is a powerconsumption (or loss) which is a function of the pressure dropand the flow rate. The following data is useful in calculating thehydraulic power requirements of a system.

H.P. =

The hydraulic power can also be expressed in anotherconvenient form.

H.P. = or

Since 1 H.P. = 746 watts, the above formula can be:

Watts = or

The nomogram on the opposite page shows this relationship.

EXAMPLE:A Lee Chek Valve such as CKRA1876005 with 400 Lohmswill flow 0.35 GPM at 50 psid. At those conditions, whathorsepower is lost?

H.P. = =

H.P. = 0.010

H x I 50 x 0.351714 1714

HYDRAULIC POWER

H x I When H = psi ∆P1714 I = GPM flow rate

8.70 H 3/2 8.70 H HL L

0.0117 H 3/2 0.0117 H HL L

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NOMOGRAM FOR HYDRAULIC POWER

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∆T = Temp. rise in °F

∆P = Pressure dropin psi

S = Specific gravity

c = Specific heat

(0.003) (2500)

(0.82) (0.50)

Hydraulic fluid heats when flowing through a restriction as thepressure energy upstream of the restriction is converted intothermal energy.

∆T =

FLUID c~BTU/ lb./ °F*

Water 1.00JP-4 0.50MIL-H-5606 0.47MIL-H-83282 0.50Skydrol 500 B-4 0.39Silicone 100cs 0.35Gasoline 0.50

*Specific Heat at 100°F.

EXAMPLE:

If a Lee Jet is flowing MIL-H-83282 at 120°F and 2500 psid, thetemperature rise across the Lee Jet is computed as follows:

For MIL-H-83282 at 120°F, S = 0.82, c = 0.50

∆T = = 18.3°F

0.003 (∆P)

(S) (c)

TEMPERATURE RISE IN HYDRAULIC FLUIDS

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TEMPERATURE RISE IN HYDRAULIC FLUIDS

1. Connect c to S2. From point on reference line,

connect ∆P and extend to ∆T.

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EngineeringLohmLaws

SI2 L 1 x 22 x 100400 400

H 990L 600

The momentum Lohm Laws give the designer simple formulasto determine the forces caused by changes in velocity (eitherspeed or direction) of a liquid.

F = F = F =

F = Force in lbs. H = psid I = GPM S = Spec. gravity

These forces are produced by locally high (or low) pressuregradients, and should be added to the forces produced by thestatic pressure. It is often useful to sketch these pressuregradients to determine the direction of the momentum forces.

EXAMPLE: Where a liquid changes direction.

Fmomentum = = = 1.7 lbf

The momentum force of 1.6 lbs.in this example must be addedto the force produced by staticpressure on the plate (of .1 in.2

x 10 psi = 1 lb.) to give the totalforce on the plate.

EXAMPLE: Where a liquid changes speed.

Fmomentum = = = 1 lbf

The momentum force of 1 lb. inthis example must be sub-tracted from the force pro-duced by static pressure onthe plate (of 0.1 x [3000-2900]= 10 lb.) to give the total forceon the piston.

SI 2L H I HS

400 L 20

MOMENTUM FORCES

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EngineeringLohmLaws

120 (0.15)2

A brief pressure spike, commonly called water hammer,occurs when a high velocity fluid is suddenly stopped. It isoften brought on by the fast closing of a valve somewhere inthe system. The hydraulic system designer can approximatethe magnitude of the pressure spike with the following for-mula that assumes a "hard" system with non-compliant fluidpassages, and will, therefore, yield a worst case value for thepeak pressure.

∆P = S x B

∆P = Pressure rise caused by water hammer effects(psi)

I = Flow rate (GPM)S = Specific gravity, see page M16.B = Bulk modulus. (psi)D = Inside diameter of fluid passageway upstream

of the Lee component. (in.)

EXAMPLE: A Lee component (such as JEHA1875500L) isflowing 1 GPM of MIL-H-83282 at 80°F with 4000 psi up-stream and 3500 psi downstream. The component is beingfed through a 0.15 in. dia. passage upstream. If a valve issuddenly shut downstream of the component, the pressurespike will be:

∆P = 0.84 (300,000) = 1,100 psi

The maximum upstream pressure would then be:

(4000 psi steady state) + (1100 psi spike) = 5100 psi total.

WATER HAMMER

I20D2

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BULK MODULUS

Bulk Modulus is a measure of the resistance of a fluid tocompression. It is defined as the ratio of pressure stress tovolumetric strain. The value of bulk modulus equals the pres-sure change x 100 required to cause a one percent change involume.

B = – x V

EXAMPLE:

MIL-H-83282 oil has a bulk modulus of 3.0 x 105 psi. Thus, apressure increase of 3000 psi will reduce its volume by 1.0%.

When the value of B is known (see reference table on nextpage), it is easy to calculate the effect of any pressure changeon volume, or of any volume change on pressure.

∆V = – x ∆P or ∆P = – x ∆V

COEFFICIENT OF THERMAL EXPANSION

The Coefficient of Cubical Thermal Expansion is the changein volume per unit volume caused by a change in temperatureof 1°F.

∆V = V x γ x ∆T

EXAMPLE:

MIL-H-83282 oil has a coefficient of cubical thermal expan-sion of 0.00046/°F. Thus a temperature rise of 100°F willincrease its volume by 4.6%.

The bulk modulus and the coefficient of cubical thermal ex-pansion can be used together to compute the pressure risein a closed system subjected to an increasing temperature.

Pressure Rise: ∆P = B x γ x ∆T

V BB V

∆P∆V

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BULK MODULUSEXAMPLE:

MIL-H-83282 oil at 0 psi is heated from 70°F to 120°F in aclosed, constant volume system containing 100 cu. in.

∆P = 3.0 x 105 x 0.00046 x 50 = 6900 psi

This is the same ∆P which would be caused by adding 2.3 cubicinches of oil with no temperature change. It is also apparent thata constant system pressure could be maintained by bleeding off2.3 cubic inches of oil while increasing the temperature by 50°F.

REFERENCE TABLE

FLASH POURFLUID Bref. γ POINT* POINT

Units psi ∆V/V/°F °F,min. °F, max.

Gasoline 150 000 0.00072 -50° -75°JP-4 200 000 0.00057 0° -76°MIL-H-5606 260 000 0.00046 200° -75°MIL-H-83282 300 000 0.00046 400° -65°MIL-H-6083 260 000 0.00044 200° -75°SKYDROL 500B-4 340 000 0.00047 340° -80°Silicone 100cs 150 000 0.00054 575° -65°Water 310 000 0.00021 — +32°

Bref. = Tangent adiabatic bulk modulus psi stated at 100°F,2500 psi and no entrained air. A reference point.

γ = Coefficient of cubical thermal expansion/°F at 100°F.∆P = Pressure rise, psi.∆T = Temperature rise, °F.

P1, P2 = Initial and final pressures, psi.

*Flash point is the lowest temperature at whichsufficient combustible vapor is driven off a fuel to flashwhen ignited in the presence of air.

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BULK MODULUS (ACTUAL)

The previous examples used a constant bulk modulus for sim-plicity. In actual use, the bulk modulus is affected by the workingpressure, temperature and percent of entrained air. Use thenext 3 graphs to find the effect of these variables, and you willget a close approximation of actual conditions. The actual bulkmodulus, B, of a fluid is the value in the table on page M25 asBref. modified for the effect of pressure, temperature and per-cent of entrained air.

The actual bulk modulus B = EP x ET x EA x Bref.

EXAMPLE:

500 psi, 60°F, 2% entrained air, MIL-H-83282.Actual B = 0.91 x 1.10 x 0.8 x 300,000 = 240,000 psi

EXAMPLE:

2000 psi, 160°F, 2% entrained air, MIL-H-83282.Actual B = 0.98 x 0.86 x 0.98 x 300,000 = 248,000 psi

With the corrected bulk moduli for the two end points of athermal problem, an average bulk modulus can be selected forcalculation purposes. We would use 244,000 psi for B.

Thermal Relief Valves made by The Lee Company remainclosed on a temperature increase until the pressure reaches apredetermined safety value, and then bleed off only thatamount of liquid determined by the above conditions.

This is expressed by:

∆V = V x γ x ∆T – x ∆P

Note: In this case the ∆P is the difference between the initial pressure and the cracking pressure of the valve.

VB( )

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BULK MODULUSWORKING PRESSUREThe effect of working pressure on bulk modulus forhydrocarbon fluids.

TEMPERATUREThe effect of temperature on bulk modulus forhydrocarbon fluids.

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BULK MODULUSENTRAINED AIRThe effect of entrained air on bulk modulus in hydrocarbon andother fluids for different working pressures.

To simplify the calculations of thermal problems with entrainedair, these curves show the average effect on a 230,000 psi bulkmodulus for pressure points fairly close together. If a widechange in pressure is encountered in a problem, it would bemore accurate to break the changes down into two or moresteps, depending on the accuracy desired.

An accurate one step formula for this relationship follows:(Note that pressure is in units of psia.)

EA =x % air + 10.147 Bref.

P1 x P2

1

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CAVITATION

Liquid flowing through any orifice will cavitate whenever itsvelocity causes the pressure in the throat of the orifice to dropbelow the vapor pressure of the flowing liquid. Even thoughthere may be a high supply pressure and a high back pressureon the orifice, if the velocity is high enough there will be asubsequent lowering of the pressure in the throat of the orificeand the possibility of cavitation.

The effects of cavitation are unstable flow and erosion - both ofwhich are undesirable. To prevent cavitation, the throat pres-sure must be maintained, either by:

1. Applying sufficiently high back pressure, or2. Reducing the velocity of the liquid as it flows

through a restrictor.

While the absolute threshold of cavitation cannot be quantifiedprecisely, the following equation and graph are useful designguides.

P2 = + Vapor pressure (psia)

Where: P2 = Downstream pressure (psia)∆P = P1 - P2

P1 = Upstream pressure (psia)L = Lohm rate of fluid restrictor

EXAMPLE:

What back pressure is required to minimize the potential forcavitation for a 1900 Lohm Lee Bender Jet? Differential pres-sure is 5000 psid, discharging to atmosphere.Fluid vapor pressure is 0.15 psia.

P2 = + 0.15 = 106.2 psiaor 91.5 psig

0.062 x ∆P

L2 x (Min. passage)4

0.062 x 5000

(1900)2 x (0.030)4

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CAVITATIONLocate on the graph the point that satisfies the intendeddifferential and back pressures. Recommended restrictors arethose below the plotted point.

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CAVITATIONVAPOR PRESSURE VERSUS TEMPERATURE

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K fT P1 (Sonic region)Q i.e. P1/ P2 ≥ 1.9

2 K fT ∆P P2 (Subsonic region)Q i.e. P1/ P2 < 1.9

The Lohm Laws extend the definition of Lohms for gas flow atany pressure and temperature, and with any gas. The formu-las work well for all gases because they are corrected for thespecific gas, and for the flow region and incompressibility oflow pressure gasses.

A 100 Lohm restriction will permit a flow of 250 standard litersper minute of nitrogen at a temperature of 59°F, and anupstream pressure of 90 psia discharging to atmosphere.

L =

L =

NOMENCLATUREL = LohmsK = Units Constant – Gas (see page M34)fT = Temperature correction factor (see page M33)P1 = Upstream absolute pressureP2 = Downstream absolute pressureQ = Gas flow rate∆P = P1 – P2

1. Compute the P1/ P2 pressure ratio.2. Select the correct formula for the flow region.3. Look up the value of "K" for the gas.4. Determine the temperature correction factor, " fT".5. Use the formula to solve for the unknown.

GAS FLOW

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EXAMPLE: What restriction will permit a flow of 1.00 stdL/min. of nitrogen at 90°F, with supply pressure at 5 psig,discharging to atmosphere?

K = 276 (see page M34)T1 = 90°F, f T = 0.98 (see below)P1 = 5.0 + 14.7 = 19.7 psia, P2 = 14.7 psiaP1/ P2 = 19.7/14.7 = 1.34 (subsonic)∆P = 5.0 psidQ = 1.00 std L/min.

L = = 4640 Lohms2 (276) 0.98 5.0 (14.7)

1.00

GAS FLOWQ

P1 T1 P2

Lohms

((

TEMPERATURE CORRECTION FACTOR fT

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EngineeringLohmLaws

K fT P1

Q

2 K fT ∆P P2

Q

VOLUMETRIC FLOW UNITSAbs. Pres psia bar kPa mm.Hg

Flow SLPM SCFM in3/min SLPM SCFM SLPM mL/min

H2 1030 36.3 62 700 14 900 526 149 19 900

He 771 27.2 47 100 11 200 395 112 14 900

Neon 343 12.1 20 900 4 980 176 49.8 6 640

Nat. Gas 319 11.3 19 400 4 620 163 46.2 6 160

N2 276 9.73 16 800 4 000 141 40.0 5 330

CO 274 9.69 16 700 3 980 141 39.8 5 300

Air 271 9.56 16 500 3 930 139 39.3 5 230

Ethane 251 8.86 15 300 3 640 129 36.4 4 850

O2 257 9.08 15 700 3 730 132 37.3 4 970

Argon 245 8.65 14 900 3 550 125 35.5 4 730

CO2 213 7.52 13 000 3 090 109 30.9 4 110

N2O 214 7.56 13 100 3 100 110 31.0 4 140

SO2 176 6.21 10 700 2 550 90.1 25.5 3 400

Freon-12 123 4.34 7 510 1 780 63.0 17.8 2 380

Lohms = (Sonic: P1 / P2 ≥ 1.9)

Lohms = (Subsonic: P1 / P2 < 1.9)

GAS FLOW – UNITS CONSTANT "K"

To eliminate the need to convert pressure and flow param-eters into specific units such as "psia" and "std L/min.", thetable below lists values of the Units Constant "K", which isused in the Gas Flow Lohm Formulas:

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GRAVIMETRIC FLOW UNITSAbs. Pres psia bar kPa mm.Hg

Flow PPH lbm /s kg/min PPH kg/min kg/min gm/min

H2 11.6 0.00322 0.0876 168 1.27 0.0127 1.27

He 17.3 0.00479 0.131 250 1.89 0.0189 2.52

Neon 38.7 0.0108 0.293 561 4.25 0.0425 5.66

Nat.Gas 34.8 0.00966 0.263 505 3.82 0.0382 5.09

N2 43.2 0.0120 0.326 626 4.73 0.0473 6.31

CO 43.0 0.0119 0.325 623 4.71 0.0471 6.28

Air 43.8 0.0122 0.331 636 4.81 0.0481 6.41

Ethane 42.2 0.0117 0.319 611 4.62 0.0462 6.16

O2 46.0 0.0128 0.348 667 5.04 0.0504 6.72

Argon 54.6 0.0152 0.413 792 5.99 0.0599 7.99

CO2 52.4 0.0145 0.396 759 5.74 0.0574 7.65

N2O 52.7 0.0146 0.398 764 5.77 0.0577 7.70

SO2 63.0 0.0175 0.476 914 6.91 0.0691 9.21

Freon-12 83.2 0.0231 0.629 1210 9.12 0.0912 12.2

Lohms = (Sonic)

Lohms = (Subsonic)

K fT P1

Q

2 K fT ∆P P2

Q

GAS FLOW – UNITS CONSTANT "K"

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GAS FLOW CHARACTERISTICS

When selecting components for use in a gas system, certainfactors must be considered which arise only because of thecompressibility of the gaseous medium. The nature of gascompressibility is defined by the following two rules.

Boyle's Law – The pressure and specific volume of a gasare inversely proportional to each otherunder conditions of constant temperature.

Charles' Law – The pressure and temperature of a gas aredirectly proportional to each other when thevolume is held constant, and the volumeand temperature are directly proportionalwhen the pressure is held constant.

Thus, a gas will expand to fill any container, and pressure andtemperature will adjust to values consistent with the aboverules. Gas flowing through valves and restrictors will besubject to an increasing specific volume as pressure dropstake place, and temperatures will change as determined bythe Joule-Thompson effect.

The combination of the above rules forms the basis for the"Equation of State" for perfect gases. This allows eitherpressure, temperature, or volume to be calculated for a knownquantity of gas when the other two variables are known.

i.e. p V = m R T (See page M54 for values of theGas Constant, R)

In general, the following comments apply to gas flow.

1. Gas flow at high pressure ratios (P1 /P2 > 1.9) is directlyproportional to the upstream absolute pressure (seepage M32).

2. Gas flow at moderate pressure ratios (P1 /P2 < 1.9)is proportional to the downstream absolute pressure,and to the pressure differential (see page M32).

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GAS FLOW CHARACTERISTICS

3. Gas flow at low pressure ratios (P1 /P2 < 1.1) is propor-tional to the pressure differential, similar to hydraulic flow.

4. When restrictions appear in series, the most downstreamrestrictor dominates in the determination of flow rate.

5. When the absolute pressure ratio across a restrictor isabove 1.9, the gas velocity will reach the speed of sound(sonic flow) in the restrictor throat. When restrictorsappear in series the overall pressure ratio must behigher to achieve sonic flow.

6. When equal restrictors appear in series, sonic flow canonly occur in the most downstream restrictor.

7. Velocity of the gas stream cannot exceed the speed ofsound in either a constant area duct, or a convergingsection.

The Rule of Forbidden Signals:*

"The effect of pressure changes produced by a body movingat a speed faster than the speed of sound cannot reach pointsahead of the body."

This rule can be applied to pneumatic flow restrictors wherethe body is not moving, but the flow velocity relative to the bodycan reach, or exceed, the speed of sound. Whenever thedownstream pressure is low enough to produce Mach 1 at therestrictor throat, any effect of changes in the downstreampressure cannot reach points upstream of the throat. Thus,flow rate will be independent of downstream pressure. Thissituation applies to a single orifice restrictor flowing air whenthe overall pressure ratio exceeds 1.89/1.

*von Kármán, Jour. Aero. Sci., Vol. 14, No. 7 (1947)

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2 (276) 1.0 10.0 (14.5)

2.00

EXAMPLE: What single-orifice restriction will permit a flowof 2.00 std L/min. of nitrogen at 70°F, with supply pressureat 10 psig, discharging to an atmospheric pressure of 29.5in. Hg.

K = 276 (see page M34)T1 = 70°F, fT = 1.00 (see page M33)P2 = 0.4912 x 29.5 = 14.5 psiaP1 = 10.0 + 14.5 = 24.5 psiaP1/ P2 = 24.5/14.5 = 1.69 (subsonic)∆P = 24.5 - 14.5 = 10.0 psidQ = 2.00 std L/min.

L = = 3320 Lohms

Gas flow is a function of upstream absolute pressure, and ofthe ratio of upstream to downstream pressures. Lohm testingdone at The Lee Company is performed at an upstreampressure which is high enough so that downstream pressuredoes not affect the flow rate. To accurately determine theupstream absolute pressure, it is necessary to measureatmospheric pressure with a suitable barometer. This mea-surement will normally be in units of in. Hg, while the gaugepressure reading is in units of psig. Thus, the barometerreading must be converted to psia, and added to the gaugereading to get the value of pressure in psia.

Pres. (psia) = Pres. (psig) + 0.4912 x Pres. (in. Hg)

GAS FLOWABSOLUTE PRESSURE MEASUREMENT

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EngineeringLohmLaws

UNITS:

T = Gas temperature, °R = 460 + °FP = Gas pressure, psia

ACFM = Gas flow, actual cubic feet/minuteSCFM = Gas flow, standard cubic feet/minute

EXAMPLE: What is SCFM corresponding to 0.032 ACFMat 300 psia and at 240°F?

SOLUTION:

300 51914.7 700SCFM = 0.032 = 0.48( ) ( )

GAS FLOWACFM TO SCFM CONVERSION

It is frequently convenient to express gas flow in terms of flowat standard conditions. This is useful for calculation purposes,or for application to flow measuring instruments.

P 51914.7 TSCFM = ACFM ( ) ( )

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EngineeringLohmLaws

When multiple orifices appear in series or when a restrictorhas several stages, as in a visco Jet, there is a non-uniformdistribution of the overall pressure drop through the restrictor.See page 42 for additional discussion of series gas flow.

The effect of the above flow behavior is that the gas flow rateof a multi-orifice device is higher than would be expected froma single-orifice device of the same lohm rate, and at the samepressure conditions. This characteristics is reflected in theflow factor, " fM", which reaches a maximum value of 1.3 at apressure ratio of 3/1. See the graph on page M41 for values of" fM", at any pressure ratio for multi-orifice restrictors.

EXAMPLE: What multi-orifice restriction will permit a flowof 0.5 std L/min. of hydrogen at 70°F, with supply pressureat 40 psig, discharging to atmosphere.

K = 1030 (see page M34)T1 = 70°F, fT = 1.0 (see page M33)P1 = 40.0 + 14.7 = 54.7 psiaP2 = 14.7 psiaP1/ P2 = 54.7 / 14.7 = 3.72fM = 1.30 (see page M41)Q = 0.50 std L/min

L = = 146,000 Lohms

K fT fM P1

QLohms = (Sonic region)

1030 x 1.0 x 1.30 x 54.70.50

GAS FLOWFLOW FACTOR (MULTI-ORIFICE)

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EngineeringLohmLaws

Sonic flow:

for P1 / P2 > 3, use fM = 1.3

GAS FLOWFLOW FACTOR "fM" (MULTI-ORIFICE)

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EngineeringLohmLaws

When gas flow passes through orifices in series, the pressuredrops are not evenly distributed. This is caused by the com-pressibility of the gas, and generally results in higher pressuredrops at the downstream orifices. Thus, it becomes difficult tocalculate the intermediate pressure between series restrictorsflowing gas without using a trial and error process. To simplifythis calculation, the chart on the following page may be usedwhen the Lohm rates of the applicable restrictors are known.

TWO RESTRICTORS

The chart on the adjacent page solves for the absolutepressure between two orifices as a percentage of the supplypressure. To solve a problem, simply follow the graph linecorresponding to the Lohm ratio, L1/L2 , until it crosses theoverall pressure ratio, P1/P3 . Then read horizontally across tothe left hand scale to obtain the value of P2 as a percentageof the upstream absolute pressure, P1 .

EXAMPLE: Find the intermediate pressure between tworestrictors with an upstream pressure 72 psia, exhausting toatmosphere at 14.7 psia.

L1 = 2000 Lo. L2 = 500 Lo.

Calculate the Lohm ratio: L1/L2 = 2000/500 = 4.0

Calculate the overall pressure ratio: P1/P3 = 72.0/14.7 = 4.9

Read 28% from left hand scale of graph.

The upstream pressure is known, thus:

P2 = 0.28 x 72.0 = 20 psia

GAS FLOWSERIES

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TWO RESTRICTORS – GENERALThe following will allow solutions to be obtained for 2 restrictorproblems even when Lohm or pressure ratios are off – scale:

1. When Lohm ratio is less than 0.1, then P2 = P1.2. When Lohm ratio is less than 8.0, then solution for pressure

ratio greater than 10, is the same as at 10.3. When Lohm ratio is greater than 1.5, then solution at

high values of pressure ratio is such that ratio P2 / P1 isequal to the reciprocal of the Lohm ratio.

GAS FLOWSERIES FLOW

P1 P2 P3 (Psia)

L1 L2 (Lohms)

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[ ]

The following formulas provide solutions to series gas flowproblems which must be solved with more precision than canbe obtained by use of the graph on page M43. In each case,the graph may be used to determine whether or not eachrestrictor has a high enough pressure ratio (i.e. P1 / P2 ≥ 1.9) tobe in the sonic region.

1.) L1 and L2 are both sonic (L1 > L2 ):

P2 = P1 x

2.) L1 is subsonic, and L2 is sonic (L1 ≠ L2 ):

P2 =

3.) L1 is subsonic, and L2 is sonic (L1 = L2 ):

P2 = 0.8 x P1

4.) L1 is sonic, and L2 is subsonic (L1 > L2 ):

P2 = P3 +

5.) L1 is subsonic, and L2 is subsonic (L1 ≠ L2 ):

P2 = P1 – A + ( P1 – A)2 + 4 P3 A , A = P3

6.) L1 is subsonic, and L2 is subsonic (L1 = L2 ):

P2 =

L2

L1

4 P1 L22

L12 + 4 L2

2

P12 L2

2

4 P3 L1

2

12

2

( )L1

L2

∆P1-3 + ∆P1-32 + 4 P3

2

2

GAS FLOWSERIES (Cont.)

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EXAMPLE: Find the intermediate pressure in the exampleproblem on page M42 with more precision.

L1 = 2000 Lo. , L2 = 500 Lo.

P1 = 72 psia, P2 = 20 psia, P3 = 14.7 psia

P1 / P2 = 72 / 20 = 3.60 (Sonic)

P2 / P3 = 20 / 14.7 = 1.36 (Subsonic)

P2 = P3 + = 14.7 + = 20.2 psia

EXAMPLE: Find the intermediate pressure between tworestrictors with an upstream pressure of 30 psia, exhausting toatmosphere at 14.7 psia.

L1 = 1500 Lo. , L2 = 1500 Lo.

Use solution procedure from page M42 to determine approxi-mate value of intermediate pressure, P2 :

L1 / L2 = 1500 / 1500 = 1.0 , P1 / P3 = 30.0 / 14.7 = 2.04

P2 = 0.81 x 30.0 = 24 psia. (approx.)

P1 / P2 = 30.0 / 24.0 = 1.25 , P2 / P3 = 24.0 / 14.7 = 1.63

(L1 and L2 are both subsonic)

P2 = =

P2 = 24.2 psia

P12 L2

2

4 P3 L12

722 x 5002

4 x 14.7 x 20002

∆P1-3 + ∆P1-32 + 4 P3

2 15.3 + 15.32 + 4 x 14.7 2

2 2

GAS FLOWSERIES (Cont.)

FLOW

P1 P2 P3 (Psia)

L1 L2 (Lohms)

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GAS FLOWPARALLEL

For parallel flow, the total Lohm rating is:

1 1 1 1 1LT L1 L2 L3 LN

Note that this relationship is identical to that for hydraulic flow,and to the electrical equation.

EXAMPLE:

L1 = 2000 LohmsL2 = 3000 LohmsL3 = 5000 Lohms

1 1 1 1LT 2000 3000 5000

= + + + … +

= + + = 0.00103

Therefore, LT = 970 Lohms

FLOW

L1

L2

L3

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When a flowing stream of gas is subject to a change in velocity(either speed or direction), forces arise which are the reactionto the change in momentum of the stream. This is particularlyimportant in valve design where the position of a movingelement may be affected.

The direction in which the momentum force acts is alwaysopposite to the acceleration which is imparted to the flowstream. The magnitude of the force may be calculated by usingthe momentum Lohm Laws which apply to air at near roomtemperature.

F = F = (sonic flow)

EXAMPLE: Where a gas changes direction.

F = = = 0.2 lbf.

The momentum force of 0.2lbs. in this example must beadded to the force producedby static pressure on the plate(0.1 in.2 x 10 psi = 1 lb.) to givethe total force on the plate.

EXAMPLE: Where a gas changes speed.

F = = = 0.05 lbf.

The momentum force of 0.05lb. in this example must besubtracted from the force pro-duced by static pressure onthe plate (0.1 in.2 x [100-50]= 5 lb.) to give the total forceon the piston.

SLPM 35700 700

0.4 x P1 0.4 x 1000L 2000

0.4 x P1 SLPML 700

MOMENTUM FORCES – GAS FLOW

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EngineeringLohmLaws

4 fT V L

K

TRANSIENT GAS FLOW

This type of flow normally concerns the charging of a volumethrough a fixed resistance such as an orifice. Use of the Lohmsystem simplifies the calculation of the time required to blowdown or charge up a vessel.

The first step is to calculate system time constant, τ, whichtakes into consideration the type of gas, pressure–vesselvolume, absolute temperature, and flow resistance. The timeconstant is given by:

τ =

Note: Select K from the appropriate "psia" column of theVolumetric Flow Table on page M34. Keep the unitsof pressure vessel volume (V) consistent with thevolumetric flow units.

The larger the value of τ, the more sluggish the system.

Once τ has been calculated, the ratio of upstream pressure todownstream pressure for both the initial and final conditionsmust be computed. Then, from the pressure–ratio graph, initialand final values for N can be found. N is the number of systemtime constants required for the system to reach equilibrium.

If the final condition is equilibrium, where upstream and down-stream pressures are equal, the final pressure ratio is 1 and thefinal value of N is 0. With these values, the time for the systemto blow down or charge up can be calculated from:

t = τ (Ni - Nf ) t = Time (sec.)

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TRANSIENT GAS FLOW

K = Units correction factorL = Flow resistance, (Lohms)Ni = Initial number of system

time constantsNf = Final number of system

time constantsP

1= Upstream gas pressure

P2 = Downstream gas pressure

NOMENCLATUREfT

= Temperature factort = Time to charge up or

blow down a pressurevessel (sec.)

V = Pressure vesselvolume

τ = System timeconstant (sec.)

NUMBER OF TIME CONSTANTS TO REACH EQUILIBRIUM, N

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TEMPERATURE CHANGE IN GAS FLOW

When a gas flows through an orifice it is subject to a throttlingprocess. This results in the gas temperature changing to anextent determined by the pressure drop. Many of the commongasses will be chilled by throttling, although some gasses willincrease in temperature.

A positive Joule – Thomson coefficient, which is a function ofboth temperature and pressure, will produce cooling of the gas.This is only the case at below the "inversion" temperature. Atthe inversion temperature, the Joule – Thomson coefficient iszero, so no heating or cooling occurs.

The following graph allows downstream temperature to befound when starting from an upstream pressure of 4500 psia;750 psia for CO2 . Solutions may be obtained for other upstreampressures by shifting the graph lines vertically to pass throughthe zero "temp. change" line at the appropriate pressure. Thegraph works for a wide range of initial temperatures, but is mostaccurate when the initial temperature is close to 70°F.

The graph is entered on the zero "temp. change" line at thepoint corresponding to the actual upstream pressure. Then thegraph line, or a parallel line, for the applicable gas, is followedto the right. When the value of the downstream pressure (readon the X-axis) is reached, the temperature change can be readon the Y-axis.

Note that actual downstream temperature willnot normally be as extreme as calculated dueto heat transfer to or from the piping.

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TEMPERATURE CHANGE IN GAS FLOW

EXAMPLE:A Lee Jet is used in a 4500 psia helium gas system to obtaina pressure drop down to 300 psia starting with an upstreamtemperature of 80°F. What downstream gas temperaturewill result?

Enter the graph at the 4500 psia point and follow the heliumline to a pressure of 300 psia. Then read the temperaturechange on the left hand scale. This value is +30°F; thus, thecalculated downstream temperature is 110°F.

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PNEUMATIC POWER

A gas flowing through an orifice is throttled (causing turbulenceand heating), and expanded (causing cooling). Thus, it issubject to energy conversions which reduce the amount ofenergy available to do work. The rate at which available energyis lost can be termed the pneumatic power, which is a functionof the pressures, Lohm rate of the orifice, and the flow. Fornitrogen, the relationship is shown on the accompanying graph.

When the flow rate and pressure ratio is known, the resultingpower consumption can be determined from the graph. If flowis not known, it can be readily calculated from the Lohm rateusing the gas Lohm Law. Simply enter the graph at theappropriate pressure ratio (X-axis), and read vertically to theline corresponding to the applicable flow rate. The resultingpower may then be read horizontally across on the Y-axis. Notethat pressure ratio is the ratio of the absolute pressures.

For more precise calculations, or to extend the range of thepneumatic power graph, the following formula may be used fornitrogen or air.

[ ]2.2 P1

LHP = (P1/P2)

1/4 – 1

Note that due to compressor inefficiencies,more power will be needed to compress thegas than will be expended when it flows throughan orifice.

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PNEUMATIC POWER

POWER LOSS FOR NITROGEN

EXAMPLE:For a 500 Lohm, restrictor flowing nitrogen at 750 psiaexhausting to 75 psia, the flow can be easily calculated fromthe gas Lohm Law.

Q = = = 405 std L/min.

Next, determine the pressure ratio, P1/P2, which in thisexample is 750/75 = 10. Then, from the graph:

Pneumatic power = 2.5 HP

270 P1

L270 (750)

500

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R Density cP* cV*

Gas k ft lb/lb°R lbm /ft3 lbm /std L Btu/lb°R Btu/lb°R

H2 1.40 766.6 0.00532 0.000188 3.420 2.435

He 1.66 386.1 0.01056 0.000373 1.250 0.754

Neon 1.66 76.6 0.0533 0.00188 0.248 0.150

Nat.Gas 1.22 79.2 0.0516 0.00182 0.560 0.458

N2 1.40 55.2 0.0739 0.00261 0.247 0.176

CO 1.41 55.2 0.0739 0.00261 0.243 0.172

Air 1.40 53.3 0.0764 0.00270 0.241 0.173

Ethane 1.21 51.4 0.0793 0.00280 0.386 0.320

O2 1.40 48.3 0.0845 0.00298 0.217 0.155

Argon 1.67 38.7 0.1053 0.00372 0.124 0.074

CO2 1.28 35.1 0.1162 0.00410 0.205 0.160

N2O 1.26 35.1 0.1162 0.00410 0.221 0.176

SO2 1.25 24.1 0.1691 0.00597 0.154 0.123

Freon-12 1.13 12.8 0.319 0.01127 0.145 0.129

*values at 68°F and 14.7 psia

cP = Specific heat at constant pressure

cV = Specific heat at constant volume

k = Ratio of specific heats,

R = Gas Constant, RO

Molecular. Wt.

GAS PROPERTIES

cP

cV

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EngineeringROBNUMBER

The ROB Number, a system of rating the relative resistance toblockage of safety screens, has been developed to minimizethe guesswork and expensive testing formerly involved inselecting a screen.

The ROB Number was conceived to aid system designers inchoosing the optimum screen for their conditions relative toother screen options available. The ROB Number is not usedto predict absolute screen life.

The ROB Number system is based on a few assumptions.

• The same contamination level applies for all screenoptions.

• Fluid contamination level is not affected by having asafety screen in the system.

• When particles block holes, the manner in which theyblock different size holes is essentially the same.

• Particle distribution follows a log - log2 distribution.

DEFINITION

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A fluid contamination level per MIL-STD-1246 Class 200 waschosen as the basis of comparison with the ROB Numberdefined as;

ROB =

where n = 10

d = hole size (µ)

N = # of holes in a screen

A master screen of ROB = 1 is therefore defined ashaving 1000 holes all 100 µ in size.

The following table gives the ROB Number for single holes of agiven diameter. To determine the ROB Number for a screen,multiply the single hole value by the number of holes in thescreen.

Screen ROB # = Single orifice ROB # x # of holes.

The screen safety factor is defined as the ratio of the screenROB Number to the ROB Number of the orifice it is protecting.You should choose a screen to provide the highest practicalsafety factor.

N

63.25n

(4.9029 – 0.926 log 2d)

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HOLE SIZE # OF ROB SAFETY(in) (µ) HOLES NUMBER FACTOR

Orifice 0.030 762 1 9.7 1

Screen 1 0.008 203 850 14.4 1.5

Screen 2 0.015 381 450 131 13.5

The results show screen 2 to be the better choice.

EXAMPLE: Which safety screen would be the betterchoice to protect a 0.030 diameter orifice: A 0.008 holesize screen with 850 holes, or a 0.015 hole size screenwith 450 holes?

SOLUTION: From the table on page M58, we find that asingle orifice of 0.030 diameter has a ROB Number of 9.7.

Again using the table for 0.008 and 0.015 holes and multiplyingby the respective number of holes gives the following results:

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SINGLEORIFICE

Inch Micron ROB #

0.0010 25 0.00001330.0015 38 0.00004080.0020 51 0.0000979

0.0025 64 0.0002020.0030 76 0.0003760.0035 89 0.000650

0.0040 102 0.001060.0045 114 0.001650.0050 127 0.00248

0.0055 140 0.003610.0060 152 0.005110.0065 165 0.00709

0.0070 178 0.009630.0075 191 0.01290.0080 203 0.0169

0.0085 216 0.02200.0090 229 0.02810.0095 241 0.0357

0.010 254 0.04480.011 279 0.06870.012 305 0.1023

0.013 330 0.14820.014 356 0.2100.015 381 0.291

0.016 406 0.3970.017 432 0.5330.018 457 0.706

0.019 483 0.9220.020 508 1.190.021 533 1.52

SINGLEORIFICE

Inch Micron ROB #

0.022 559 1.930.023 584 2.420.024 610 3.01

0.025 635 3.720.026 660 4.560.027 686 5.56

0.028 711 6.730.029 737 8.100.030 762 9.71

0.031 787 11.60.032 813 13.70.033 838 16.2

0.034 864 19.10.035 889 22.30.036 914 26.0

0.037 940 30.30.038 965 35.10.039 991 40.5

0.040 1016 46.60.041 1041 53.50.042 1067 61.2

0.043 1092 69.90.044 1118 79.50.045 1143 90.3

0.046 1168 1020.047 1194 1160.048 1219 130

0.049 1245 1470.050 1270 1650.051 1295 185

HOLE SIZE HOLE SIZE

SINGLE ORIFICE ROB NUMBERS

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SINGLEORIFICE

Inch Micron ROB #

0.052 1321 2070.053 1346 2310.054 1372 257

0.055 1397 2860.056 1422 3180.057 1448 352

0.058 1473 3900.059 1499 4310.060 1524 476

0.061 1549 5250.062 1575 5780.063 1600 635

0.064 1626 6980.065 1651 7650.066 1676 838

0.067 1702 9170.068 1727 10020.069 1753 1094

0.070 1780 1.2E + 030.071 1800 1.3E + 030.072 1830 1.4E + 03

0.073 1850 1.5E + 030.074 1880 1.7E + 030.075 1910 1.8E + 03

0.076 1930 2.0E + 030.077 1960 2.1E + 030.078 1980 2.3E + 03

0.079 2010 2.5E + 030.080 2030 2.7E + 030.081 2060 2.9E + 03

SINGLEORIFICE

Inch Micron ROB #

0.082 2080 3.1E + 030.083 2110 3.4E + 030.084 2130 3.6E + 03

0.085 2160 3.9E + 030.086 2180 4.2E + 030.087 2210 4.5E + 03

0.088 2240 4.8E + 030.089 2260 5.2E + 030.090 2290 5.6E + 03

0.091 2310 5.9E + 030.092 2340 6.4E + 030.093 2360 6.8E + 03

0.094 2390 7.3E + 030.095 2410 7.8E + 030.096 2440 8.3E + 03

0.097 2460 8.9E + 030.098 2490 9.5E + 030.099 2510 1.0E + 04

0.10 2540 1.1E + 040.11 2790 2.0E + 040.12 3050 3.4E + 04

0.13 3300 5.8E + 040.14 3560 9.4E + 040.15 3810 1.5E + 05

0.16 4060 2.3E + 050.17 4320 3.4E + 050.18 4570 5.0E + 05

0.19 4830 7.3E + 050.20 5080 1.0E + 06

HOLE SIZE HOLE SIZE

SINGLE ORIFICE ROB NUMBERS

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EngineeringContaminationControl

RECOMMENDATIONS

The Lee Company offers and strongly recommends protectivescreens integrally mounted on all of our products with smallpassageways less than 0.055" in diameter. Because our screensare small, we rely on our customers to provide adequate systemfiltration, leaving only the occasional "rogue" particle for ourscreens to catch.

The following table shows the tightest sliding fits and smallestmetering orifices found in Lee Company standard products andthe maximum recommended system filter micron rating neededto protect those products.

Min. Lee orifice diameter ...................... 0.005"

Min. Lee sliding fit (radial) ..................... 0.0005" (12 µ)

Min. Lee integral screen hole size ........ 0.004"

Max. system filter micron rating ............ 10 µ

Many Lee Company products have looser fits, larger orifices,or larger integral screens than those shown above. In such acase, coarser system filtration may be specified while stilladequately protecting the Lee products. Our sales engineersstand ready to assist you in properly sizing your systemfiltration.

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CONTAMINATION LEVEL CORRELATION

Fluid contamination can be described by a number oftechniques:

• The Gravimetric Method:The contaminant level is expressed as the mass ofcontaminant per unit volume of fluid.

• Parts Per Million:The degree of contamination is based on mass or volumeper million units (e.g. gms/106 gms).

The above techniques describe bulk or total contaminationbut give little information regarding size of contaminant. Forexample, unless the size and density of the contaminatingparticles is known, no conclusions may be drawn relative tonumbers of particles.

Other techniques look at numbers of particles, describingcontamination in terms of its size and concentration.These may be an interval concentration, for example thenumber of contaminant particles (per unit volume) be-tween 5 and 15 µ in size. Additionally, contamination may beexpressed as a cumulative concentration. In this case con-tamination levels are described by the total number of par-ticles per unit volume above a given size. For example, thenumber of particles above 25 µ in size per 100 mL.

Most commonly used cleanliness specifications are basedon numbers of particles rather than gravimetric tech-niques. However, particle distributions which were de-termined to be representative of service distributions(e.g. NAS 1638 distributions) correlate reasonably withthose obtained gravimetrically with AC test dust. The tableon page 62 (from An Encyclopedia of Fluid ContaminationControl by E.C. Fitch) provides a correlation of somedifferent cleanliness specifications.

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CONTAMINATION LEVELCORRELATION

ACFTDISO Particles Gravimetric, MIL-STD NAS 16384406 Per mL Level 1246 ClassCode >10 µ mg/L Level

26/23 140 000 100025/23 85 000 100023/20 14 000 100 70021/18 4 500 1220/18 2 400 50020/17 2 300 1120/16 1 400 1019/16 1 200 1018/15 580 917/14 280 300 816/13 140 1 715/12 70 614/12 40 20014/11 35 513/10 14 .1 412/9 9 318/8 5 210/8 3 10010/7 2.3 110/6 1.4 .019/6 1.2 08/5 0.6 007/5 0.3 506/3 0.14 .0015/2 0.04 252/.8 0.01 10

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CONTAMINATION LEVELCORRELATION

NAS* Number of Particles per 100 mL ISO1638 Micron Range 4406

Class 5-15 µ 15-25 µ 25-50 µ 50-100 µ >100 µ Class

00 125 22 4 1 — 8/5

0 250 44 8 2 — 9/6

1 500 89 16 3 1 10/7

2 1K 178 32 6 1 11/8

3 2K 356 63 11 2 12/9

4 4K 712 126 22 4 13/10

5 8K 1425 253 45 8 14/11

6 16K 2.8K 506 90 16 15/12

7 32K 5.7K 1012 180 32 16/13

8 64K 11.4K 2.0K 360 64 17/14

9 128K 22.8K 4.1K 720 128 18/15

10 256K 45.6K 8.1K 1440 256 19/16

11 512K 91.2K 16.2K 2.8K 512 20/17

12 1M 182K 32.4K 5.8K 1024 21/18

• SAE standard AS 4059 also applies. This lists fluid particulatecontamination cumulatively for 5 ranges:

• >2 µ• >5 µ• >15 µ• >25 µ• >50 µ

for contamination classes from 000 to 12.

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SCREEN SIZES

OPENING IN OPENINGIN INCHES IN MICRONS

50 0.0117 297

60 0.0090 228

70 0.0083 210

100 0.0059 149

140 0.0041 105

200 0.0029 74

270 0.0021 53

325 0.0017 44

Paper 0.00039 10

Paper 0.00019 5

SIZES OF FAMILIAR OBJECTS

SUBSTANCE MICRON INCH

Grain of Table Salt 100 0.0039

Human Hair 70 0.0028

Lower Limit of Visibility 40 0.0016

White Blood Cells 25 0.0010

Talcum Powder 10 0.0004

Red Blood Cells 8 0.0003

Bacteria (Average) 2 0.00008

PARTICLE SIZE COMPARISON

U.S. SIEVE NO.

65

M

EngineeringPressureRatings

The restrictors and valves manufactured by The LeeCompany may be classified by their "maximum work-ing pressure differential" into four broad categoriesof 3,000, 4,000, 5,000, and 8,000 psi. These catego-ries correspond generally to the common systempressures in use today.

Many applications do not expose the Lee Insert tothe full system pressure differential. In such cases itmay be possible for the designer to safely specify aLee component with a lower working pressure differ-ential than the system pressure. Our staff of salesengineers is ready to help you select the proper LeeInsert for your application.

66

M


GOVERNMENT/INDUSTRY STANDARDS

FOR COMPONENTS (psi)MIL-H-5440HMIL-H-8891A

NominalSystem 3000 4000 5000 8000Pressure

SystemPeak 4050 5400 6750 9600Pressure

Proof4500 6000 7500 12 000Pressure

Burst7500 10 000 12 500 16 000

Pressure

FOR LINES, FITTINGS, HOSES and COUPLINGS† (psi)MIL-H-5440HMIL-H-8891A

NominalSystem 3000 4000 5000 8000Pressure

SystemPeak 4050 5400 6750 9600Pressure

Proof6000 8000 10 000 16 000

Pressure

Burst 12 000 16 000 20 000 24 000Pressure

† Lee Plugs should be selected to meet these requirements.

67

M


MAXIMUM WORKING PRESSURE (psid)3000 4000 5000 8000

JETA Pg. B16JEHA Pg. B20JEKA Pg. B22JEBA Pg. B28VXCA Pg. B30JEVA Pg. B38VDCA Pg. B42JHTA Pg. B50JHHA Pg. B54* Pg. B54**JHBA Pg. B58VHCA Pg. B60FC 187 Pg. C8FC 281 Pg. C10FC 375 Pg. C12FC 500 Pg. C14FH 375 Pg. C20FH 500 Pg. C24FL 281 Pg. C16FL 500 Pg. C18

*Continuous ** Intermittent

3000 4000 5000 8000

4050 5400 6750 9600

Max. WorkingPressure (psid)

System PeakPressure (psi)

RESTRICTORS AND BIDIRECTIONALFLOW CONTROLS

PRODUCT

Conventional hydrostatic proof and burst pressure testingapplies equal pressure to all parts of a Lee restrictor or flowcontrol insert. The Lee insert is therefore unaffected. Maximumhydrostatic pressure in this condition is limited only by thestrength of the housing into which the Lee insert is installed.

Lee Company restrictors and bidirectional flow controls aredesigned to withstand transient pressure surges higher thanthe maximum working pressure differential. Continuous flowwith low downstream pressure may cause cavitation, andshould be avoided. Further information on cavitation may befound on pages B9 and M29.

68

M


LEE CHEK AND RELIEF VALVES

PRODUCTMAXIMUM WORKING PRESSURE (psid)3000 4000 5000 8000

CK 187 (Axial) Pg. E6CK 250 (Axial) Pg. E10CK 187 (Side Exit) Pg. E14†

CH 343 (Side Exit) Pg. E18CS 187 Pg. E20CK 187 Lo-Lohm Pg. E26††

CK 250 Lo-Lohm Pg. E32CK 375 Lo-Lohm Pg. E34CK 500 Lo-Lohm Pg. E36CK 500 (Hi-Q) Pg. E40CK 750 (Hi-Q) Pg. E42CK 1000 (Hi-Q) Pg. E44CH 125 Pg. E46CH 187 Pg. E52CH 250 Pg. E58CH 375 Pg. E60CH 500 Pg. E62CP 250 Pg. E64RC 187 Pg. C6PR 187 Pg. F8PR 281 Pg. F12PR 375 Pg. F20PR 500 Pg. F22PH 281 Pg. F24PHR 375 Pg. F26PRT 187 Pg. F28PHT 250 Pg. F30

† Flow rate limited (see pages E15 and E17).

†† Flow rate limited for screened, forward flow versions(see page E29).

69

M


These Lee Company check valve and relief valve productsare rated for continuous working pressure differential in boththe checked and free flow directions. Relief valves are typi-cally closed against system pressure and will be called uponto open on occasion and to flow at pressure differentials upto the system peak pressure.

With pressure applied in the flowing direction, conventionalhydrostatic proof and burst pressure testing applies equalpressure to all parts of a Lee chek valve; and in the case of apressure relief valve, a pressure differential equal to thecracking pressure will result. The Lee chek or relief valve istherefore unaffected. Maximum hydrostatic pressure in thiscondition is limited only by the strength of the housing intowhich the Lee valve is installed.

A hydrostatic test for proof or burst pressure applied in theopposite direction (i.e. the checked direction) will stress theLee chek or pressure relief valve.

3 000 4 000 5 000 8 000

6 000 7 000 7 500 12 000

10 000 11 000 12 500 16 000




Proof Pressure inChecked Direction(psi)

Burst Pressure inChecked Direction(psi)

3000* 4000* 5000 8000

4050* 5400* 6750 9600

* See table on page M68 for exceptions.

70

M


4000

5400

4000

6000

10 000


SV 187 Pg. G6* G14SV 281 Pg. G8* G16SV 500 Pg. G12* G18

* Flow rate limited (see Section G).

STANDARD SHUTTLE VALVES

A hydrostatic test for proof or burst pressure applied at eitherthe normal or emergency port (with the cylinder port capped)will stress the valve. Proof and burst ratings are the same forboth cases.


Proof Pressure (psi)

Burst Pressure (psi)



Lee Company Shuttle Valves have the same continuous work-ing pressure differential rating for both normal and emergencymodes of operation.

PRODUCT

71

M



3 000 4 000 5 000 8 000

Proof6 000 8 000 10 000 16 000

Pressure (psi)

Burst12 000 16 000 20 000 24 000

Pressure (psi)

PRODUCT

STANDARD LINE MOUNTS

The maximum working pressure differential, and the transientsurge pressure of the fitting is limited by, and is a function of, theLee insert that is installed in the fitting.


Style "B" Pg. J6AS4395 Ends Pg. J9Style "C" Pg. J6MS33514 Ends Pg. J9Style "E" Pg. J7AS4395 Ends Pg. J10Style "F" Pg. J7MS33514 Ends Pg. J10Style "G" Pg. J8MIL-F-85720/1 Ends Pg. J11Style "H"

Pg. J12MIL-F-85720/1 Ends

Rosán Adapters Pg. Pg.J20-J51 J20-J51

VXLA Pg.J13-J14

VDLA Pg.J15-J17

72

M

EngineeringReferenceInformation

PRIMARY STANDARDS*Meter Length equal to 1,650,763.73 wavelengths in

vacuum of the radiation corresponding to thetransition between the levels 2 p10 and 5 d5 of thekrypton-86 atom.

Kilogram Mass equal to the mass of the international proto-type of the kilogram. This is a particular cylinder ofplatinum-iridium alloy which is preserved in a vaultat Sevres, France by the International Bureau ofWeights and Measures.

Second Time duration of 9,192,631,770 periods of theradiation corresponding to the transition betweenthe two hyperfine levels of the ground state of thecesium-133 atom.

DERIVED STANDARDNewton Force which gives to a mass of 1 kilogram an

acceleration of 1 meter per sec. per sec.

EXACT CONVERSIONS*1 pascal = 1 newton/meter

2

1 atmosphere = 101 325 pascals1 bar = 100 000 pascals1 centipoise = 0.001 newton-second/meter

2

1 centistoke = 1 x 10 -6 meter

2/second1 fluid ounce (U.S.) = 2.95735295625 x 10

-5 meter 3

1 foot = 0.3048 meter1 gallon (U.S.) = 3.785411784 x 10 -3 meter

3

1 gram = 0.001 kilogram1 inch = 0.0254 meter1 kilogram force = 9.80665 newtons1 liter = 0.001 meter

3

1 micron = 1 x 10 -6 meter

1 milliliter = 1 x 10 -6 meter

3

1 ounce mass (avdp) = 0.028349523125 kilogram1 pound force (avdp) = 4.4482216152605 newtons1 pound mass (avdp)= 0.45359237 kilogram

*Exact by National Bureau of Standards definition

73

M


DERIVED CONVERSIONS:1 foot of H2O at 4°C = 2 988.98 pascals

1 gram/centimeter 3 = 1 000 kilograms/meter 3

1 inch of H2O at 4°C = 249.082 pascals

1 inch of Hg at 0°C = 3 386.389 pascals

1 pound F / inch 2 = 6 894.7572 pascals

1 pound M / inch 3 = 27,679.905 Kilograms/meter 3

1 quart (U.S.) = 9.4635295 x 10 -4 meter 3

1 drop = 50 microliters

1 bar = 14.503774 pound F / inch 2

CONVERSION FACTORS

MASS

LBM OZM

(avdp) (avdp) SLUG gram kg m

LBM — 16.00 3.108 453.6 0.4536(avdp) x 10

-2

OZ M 6.250 — 1.943 28.35 2.835(avdp) x 10

-2 x 10 -3 x 10

-2

SLUG 32.17 514.8 — 1.459 14.59x 10

4

gram 2.205 3.527 6.852 — 1.000x 10

-3 x 10 -2 x 10

-5 x 10 -3

kgm 2.205 35.27 6.852 1000 —x 10

-2

Multiply by

ToConvert

Into

74

M


VO

LU

ME

GA

L.

QU

AR

TF

L.O

Z.

FT

.3IN

.3(U

.S.)

(U.S

.)(U

.S.)

liter

mL

m3

FT

.3—

1728

7.48

129

.92

957.

528

.32

2.83

22.

832

x 10

4x

10-2

IN.3

5.78

7—

4.32

91.

732

0.55

411.

639

16.3

91.

639

x 10

-4x

10-3

x 10

-2x

10-2

x 10

-5

GA

L.

0.13

3723

1.0

—4.

000

128.

03.

785

3785

3.78

5(U

.S.)

x 10

-3

QU

AR

T3.

342

57.7

50.

2500

—32

.00

0.94

6494

6.4

9.46

4(U

.S.)

x 10

-2x

10-4

FL

.OZ

.1.

044

1.80

57.

813

3.12

5—

2.95

729

.57

2.95

7(U

.S.)

x 10

-3x

10-3

x 10

-2x

10-2

x 10

-5

liter

3.53

161

.02

0.26

421.

057

33.8

1—

1000

1.00

0x

10-2

x 10

-3

mL

3.53

16.

102

2.64

21.

057

3.38

11.

000

—1.

000

x 10

-5x

10-2

x 10

-4x

10-3

x 10

-2x

10-3

x 10

-6

m3

35.3

16.

102

264.

210

573.

381

1000

1.00

0—

x 10

4x

104

x 10

6

Mul

tiply

by

Into

CONVERSION FACTORS

To

Co

nve

rt

75

M


LB

.IN

. HG

IN.H

2OF

T.H

2Okg

Fkg

F

IN.2

at 0

°Cat

4°C

at 4

°CA

TM

cm2

m2

kPa

LB

.—

2.03

627

.68

2.30

76.

805

7.03

170

3.1

6.89

5IN

.2x

10 -2

x 10

-2

IN. H

G a

t0.

4912

—13

.60

1.13

33.

342

3.45

334

5.3

3.38

6 0

°Cx

10 -2

x 10

-2

IN. H

2O a

t3.

613

7.35

5—

8.33

32.

458

2.54

025

.40

0.24

914°

Cx

10 -2

x 10

-2x

10 -2

x 10

-3x

10 -3

FT

. H2O

at

0.43

350.

8826

12.0

0—

2.95

03.

048

304.

82.

989

4°C

x 10

-2x

10 -2

AT

M14

.70

29.9

240

6.8

33.9

0—

1.03

31.

033

101.

3x

10 4

kgF

14.2

228

.96

393.

732

.81

0.96

78—

1.00

098

.07

cm2

x 10

4

kgF

1.42

22.

896

3.93

73.

281

9.67

81.

000

—9.

807

m2

x 10

-3x

10 -3

x 10

-2x

10 -3

x 10

-

5x

10 -4

x 10

-3

kPa

0.14

500.

2953

4.01

50.

3346

9.86

91.

020

102.

0—

x 10

-3x

10 -2

Mul

tiply

by

To

Co

nve

rtInto

PR

ES

SU

RE

CONVERSION FACTORS

76

M


lb mL lb 60 min

hr min mL 1 hr

Into

CONVERSION FACTORS - VOLUME TO MASSWATER AT 39.2°F (4°C)

ToConvert

V

O

L

U

M

E

MASSLB.M OZ.M

(avdp) (avdp) SLUG gram kgm

FT.3 62.43 998.8 1.940 2.832 28.32x 10

4

IN.3 3.613 0.5780 1.123 16.39 1.639x 10

-2 x 10 -3 x 10

-2

GAL.(U.S.) 8.345 133.5 0.2594 3785 3.785

QUART 2.086 33.38 6.484 946.3 0.9463(U.S.) x 10

-2

FL.OZ. 6.520 1.043 2.026 29.57 2.957(U.S.) x 10

-2 x 10 -3 x 10

-2

liter 2.205 35.27 6.852 1000 1.000x 10

-2

mL 2.205 3.527 6.852 1.000 1.000x 10

-3 x 10 -2 x 10

-5 x 10 -3

m3 2205 3.527 68.52 1.000 1000x 10

4 x 10 6

Multiply by

NOTE: For application of these factors to fluids with specificgravity other than 1.0, these factors must be multiplied by theactual specific gravity.

EXAMPLE:Problem: Determine flow rate in lb./hr. which is equivalent to430 mL/min. Fluid is MIL-H-5606, S.G. is 0.84.

Solution:

= 430 x 0.84 x 2.20 x 10 -3 x = 47.8

77

M


0.2642 GAL

1.02 kg

CONVERSION FACTORS - MASS TO VOLUMEWATER AT 39.2°F (4°C)

V

O

L

U

M

E

ToConvert

Into

MASSLB.M OZ.M

(avdp) (avdp) SLUG gram kgm

FT.3 1.602 1.001 0.5154 3.532 3.532x 10

-2 x 10 -3 x 10

-5 x 10 -2

IN.3 27.68 1.730 890.6 6.103 61.03x 10

-2

GAL. 0.1198 7.489 3.855 2.642 0.2642(U.S.) x 10

-3 x 10 -4

QUART 0.4793 2.996 15.42 9.464 0.9464(U.S.) x 10

-2 x 10 -4

FL.OZ. 15.34 0.9586 493.5 3.381 33.81(U.S.) x 10

-2

liter 0.4536 2.835 14.59 1.000 1.000x 10

-2 x 10 -3

mL 453.6 28.35 1.459 1.000 1000x 10

4

m 3 4.536 2.835 1.459 1.000 1.000x 10

-4 x 10 -5 x 10

-2 x 10 -6 x 10

-3

Multiply by

NOTE: For application of these factors to fluids with specificgravity other than 1.0, these factors must be divided by theactual specific gravity.

EXAMPLE:Problem: Determine volume in gallons which would beoccupied by 3.0kg of sea water, S.G. is 1.02 .

Solution:

GAL. = 3.0 kg x = 0.777 GAL.

78

M


TEMPERATURE CONVERSION

79

M


VISCOSITY CONVERSION

80

M


TORQUE CONVERSION CHART

81

M


PRESSURE CONVERSION CHART

82

M


GRAPHIC SYMBOLSFOR HYDRAULICS AND PNEUMATICS

83

M



84

M



85

M



86

M


METRICDIMENSION DIMENSION

(Inches) (mm) Ream

Max. Min. Max. Min.

.1255 .1250 3,185 3,175

.1880 .1875 4,775 4,765

.2505 .2500 6,36 6,35

.3755 .3750 9,54 9,53

.5010 .5000 12,72 12,70

.1355 .1350 3,44 3,43

.1980 .1975 5,03 5,02

.2605 .2600 6,62 6,61

.2917 .2912 7,41 7,40

.3855 .3850 9,79 9,78

.5110 .5100 12,98 12,96

STANDARDBODYDIAMETERS(REAM)

OVERSIZEBODY(REAM)REWORKONLY

METRIC DIMENSIONS OFLEE HYDRAULIC INSERTS

87

M


DEFINITIONS OF VISCOSITY• Absolute Viscosity is the ratio of the shear stress in a fluid

to the rate of shearing strain.• Unit of absolute viscosity in the metric system: poise and

centipoise;1 poise = 1 gm /(cm)(sec.)1 centipoise = 1/100 poise

• Unit of absolute viscosity in the English system:slug/(ft.) (sec.); 1 slug/(ft.)(sec.) = 478.8 poise

• Kinematic Viscosity is the absolute viscosity ÷ density.• Unit of kinematic viscosity in the metric system (and

commonly used in the countries using the English system):stoke and centistoke;

1 stoke = 1 poise/density (gm/ml)1 centistoke = 1/100 stoke

• Other units of kinematic viscosity; In the English system,the most practical unit for making calculations is ft.2/sec.;

1 ft.2/sec. = 92903 centistokes1 centistoke = 1/076 x 10-5 ft.2/sec.

• Saybolt Universal Seconds, SSU, is the kinematic viscosityas determined by the time in seconds required for 60 cc offluid to flow through a standard orifice.

• Saybolt-Furol, SSF, utilizes a larger orifice and is used forvery viscous fluids. Time of efflux is approx. 1/10 that ofUniversal.

• Engler degrees are obtained by dividing the outflow time ofa specified amount of fluid through a specified orifice bythe outflow time of water at 68°F. The method is usedpredominantly in European countries.

• Viscosity Index is an empirical number indicating the effectof temperature change on viscosity. Fluids with the sameviscosity at a given temperature do not necessarily havethe same viscosity index.

• SAE Viscosity Numbers are a means of classifyingcrankcase lubricating oils in terms of viscosity. Otherfactors are not considered.

NOTE: See page M79 for conversions.

88

M

EngineeringGeneralInformation

RESTRICTORINSERT

VALVEINSERT

RESTRICTORINSERT INA UNION

MARKING OF STANDARD LEE INSERTS

In order to provide complete traceability of our products, TheLee Company individually marks each standard insert, with theexception of Lee Plugs, with the appropriate twelve characterpart number and six digit lot number. For special products,additional information such as serial number, flow rate, etc., canbe provided depending upon individual customer requirements.Examples of the standard marking are shown below for a typicalrestrictor insert, valve insert, and a restrictor installed in a union.

89

M


POLICY FOR SPECIALLYFABRICATED PARTS

The Lee Company offers a wide range of off-the-shelf catalogcomponents to help designers find the solutions to their prob-lems. Should you need a non-standard component, The LeeCompany will be pleased to design products not listed in thishandbook. We have the capability to design and manufacturevariations to the components listed in this handbook on aprototype basis and for future production.

A unique part number would be assigned to the design. Thesubsequent purchase of this part number would be reserved forthe originator exclusively.

If a Production Preparation Charge (PPC) is necessary topartially offset the non-recurring costs of design, manufactur-ing, testing or tooling, the design of this special part will be theproperty of The Lee Company.

PROPRIETARY RIGHTS

The Lee Company retains all proprietary rights and the exclu-sive right to manufacture the products shown in this technicalhydraulic handbook, as well as any specially designed prod-ucts. Unlimited rights, as described in DAR 7-104.9(b), are nottransferred to the buyer.

90

M


Lee ®Bender Jet

Lee Axial ®Visco Jet

Lee JEVA ®

Lee ®Visco Jet

Lee Cro ®

Lee Restrictor ®Chek

Lee Plug ®

Lee Plug ®RFO

Lee Jet ®

Lee Hi Watt Jet ®

Lee kW Jet ®

Lee Micro Jet ®

TRADEMARKS OF THE LEE COMPANY

TRADE NAME TRADE MARK TRADE NAME TRADE MARK

91

M


Lee Tri ®

Lee Shuttle ®Valve

Lee Safety ®Screens

Lee ®HI-BARScreens

Lee Micro ®Damp

Lee Kipster ®

The ®Lee Company

TRADE NAME TRADE MARK TRADE NAME TRADE MARK

Lee Flow ®Control

Lee Flosert ®

Lee ®Spin Jet

Lee ®JELA

Lee Chek ®

Lee Pri ®

TRADEMARKS OF THE LEE COMPANY

92

M


PATENTS • TRADEMARKS • COPYRIGHTS

Throughout the text of this handbook, The Lee Company hasreferred to these hydraulic inserts by their trade names andtrade marks. Many of these devices are covered by U.S.A.and foreign Patents – issued, pending, or applied for.

Permission is hereby granted to use, copy and reproduce thegeneral engineering material, including nomograms, tablesand formulas, with the only restriction being to give credit toThe Lee Company if the material is published or republished.

It is the clear intent of The Lee Company to encourage allmembers of the engineering profession to use the LohmSystem, whether they are customers or competitors orothers who could benefit from its use. Credit to The LeeCompany must be stated in all publications.

1.

2.

3.

The Lee Company is proud to warrant that all items describedin this handbook are free from defect in design, workmanshipand materials and that they conform to any applicable speci-fications, drawings, or approved samples.

Our products will only operate as well as the systems in whichthey are installed. We therefore expect the buyers of ourproducts to be responsible for the proper design and fabrica-tion of the systems in which our products are used. To assistour customers, we maintain a staff of sales engineers thatcan recommend the proper Lee Company products to satisfya particular system requirement.

Should any Lee Company product not satisfy this warranty,we will promptly repair or replace it within a four (4) yearperiod or the product’s published cycle life, whichever is less,without responsibility for indirect or consequential damages,provided the product was used for its intended purpose, andin its intended environment.

WARRANTY

93

M


DIRECTORY OFTECHNICAL PUBLICATIONS

PROCESS SPECIFICATIONSP.S. 187 Installation and Extraction of Lee InsertsP.S. 203 Installation and Extraction of Lee Plugs

VIDEO TAPES (VHS)Innovation in Miniature(An introduction to The Lee Company Technical Center)

Lee Plug Installation and Extraction

P.C. SOFTWARE (DOS COMPATIBLE)LEE Engineering Calculations

– Boss Stress Calculations– Liquid and Gas Flow CalculationsAvailable on 3-1/2" diskette

CAD DRAWINGS OF LEE COMPONENTS(DXF)

Available on 3-1/2" diskettes

OTHER PUBLICATIONSSafety Screen HandbookElectro-Fluidic Systems Technical Handbook

Product Data Sheets

LEE LOHMOLATORHydraulic and Pneumatic Flow Calculator

NOTE: All technical publications are provided free ofcharge upon request as a service to our customers.

INDEXA

ACFM ..................................... M39*Absolute Viscosity,

Definition ................................ M89Accumulator

Graphic Symbol ..................... M83Actuator

Graphic Symbol ................... M61Landing Gear ......................... G3Unequal Area ........................ G4

Attenuation,Pressure Ripple .................. K3-K6

Axial Visco Jet ........................... B5,................. B30-B37, J13-J14

B

Ball Type Cheks ........... E3, E6-E17Bender Jet

High Pressure ............... B58-B59Insert ............................ B28-B29Line Mount ... J6-J8, J21, J25, J29

Boss MountSafety Screen ... H30-H33, H56-76

Boss Size ............. See Boss StressBoss Stress

Inserts ................................... L19Plugs .............................. A7-A14Software

for calculations .................. M95Bulk Modulus

Definition ............................. M24Entrained Air

effects of ........................... M28Pressure, effects of ............. M27Temp., effects of .................. M27

Burst Pressure .... See Pressure Rating

C

CAD Software .......................... M95CRO (Lee) ........................ B13, B64

CTFEBulk Modulus ....................... M24Coefficient of

Thermal Expansion ........... M24Pour Point ............................ M25Specific Gravity ........... M16-M17Specific Heat ....................... M20Vapor Pressure ................... M31Viscosity ...................... M14-M15

Cartridge Visco Jets .......... B44-B49Cavitation .................. B9, M29-M31Check Valves

Ball Type Cheks ...... E3, E6-E17Features of ....................... E3-E4Graphic Symbol ................... M85Hi-Q Cheks ............ E4, E38-E45High Pressure ............... E46-E63Line Mount ...................... J6-J12,

................... J18-J19, J34-J45Lo-Lohm ....................... E26-E37Pilot Operated Cheks ........... E4,

................................. E64-E65Side Exit Cheks ..... E3, E14-E19Zero Leak Cheks ... E3, E20-E25

Coefficient ofThermal Expansion ................ M24

Constant KLiquid Flow (Lohm Formula)

.................................. M9-M12Gas Flow (Lohm Formula)

................................ M32-M35Contamination

Control of ............................. M60Levels .................................. M61

Control ValvesGraphic Symbols ................... M85

Conversion ChartPressure .............................. M81Temperature ........................ M78Torque ................................. M80Viscosity .............................. M79

Conversion FactorsACFM to SCFM ................... M39Mass .................................... M73Mass to Volume - H2O ......... M77Pressure .............................. M75Volume ................................ M74Volume to Mass - H2O ......... M76

* Topic briefly discussedon related subject

I

D

INDEXFlange Mount

Safety Screen ... H24-H29, H48-H55Flash Point ............................... M25Flosert

Insert ........................... C16-C19Line Mount ....................... J9-J12

Flow Calculations .... See Lohm LawsFlow Coefficient ......................... M5Flow Controls

Directional ..................... C8-C15High Pressure .............. C20-C25Line Mount ........ J6-J12, J46-J51Pressure Compensated ... C16-C19Principle of ....................... C3-C5Restrictor Chek ................ C6-C7

Flow LinesGraphic Symbols ................... M82

Flushness ToleranceInserts ................................... L22Plugs ...................................... L5

G

Gallon ConversionFactors

From Mass of Water ............ M77To Mass of Water ................ M76To Other Units ..................... M74

GasFlow Calculation .......... M32-M47Pneumatic Power ........ M52-M53Transient Flow ............. M48-M49

GasolineBulk Modulus ....................... M25Coefficient of

Thermal Expansion ........... M25Flash Point .......................... M25Pour Point ............................ M25Specific Gravity ........... M16-M17Specific Heat ....................... M20Viscosity ...................... M14-M15

Graphic Symbols .............. M82-M85

Conversions ..................... M72-M73Copyrights ................................ M92Cross-Port Relief ....................... F6*

D

DampersHydamp ................. K6, K10-K11Micro Damp .......... K3-K5, K8-K9

DefinitionsAbsolute Viscosity ............... M87Bulk Modulus ....................... M24Engler Degrees ................... M87Kinematic Viscosity ............. M87Lohm Laws ............................ M3Saybolt-Furol ....................... M87Saybolt Universal

Seconds (SSU) ................. M87Viscosity Index .................... M87Viscosity Numbers ............... M87

Directional Flow ControlHigh Pressure .............. C20-C25Insert ............................. C8-C15Line Mount ........ J6-J12, J46-J51

DirectoryTechnical Publications ......... M93

Dual Insert Adapter ................... L20

E

Elongation .................................. A7Engineering Capabilities

The Lee Company .................... IIIEngler Degrees, Definition of ... M87Entrained Air ............................ M28Extraction

Procedures ........ See InstallationThreads ................................ L23

F

FiltersGraphic Symbols ................. M83Safety ......... See Safety ScreensSystem ................................ M60

5k Lee Jet ......................... B50-B53


II

INDEXIII


H

Heat ExchangerGraphic Symbol ..................... M83

High PressureCheks ........................... E46-E63Flow Controls .............. C20-C25HI-Bar Safety Screens ... H46-H101Hydamp ........................ K10-K11Plugs ............................ A52-A54PRI ............................... F24-F27Relief Valves .... F24-F27, F30-F31Restrictors ........... B12, B54-B63Safety Screens .......... H46-H101

High StrengthPlugs ............................ A52-A54Safety Screens .......... H46-H101HI-Bar Safety Screens . H46-H101

High Watt JetHigh Pressure ............... B54-B57Insert ..................... B4, B20-B21Line Mount ......... J6-J8, J25, J29

Hi-Q Cheks ................ E4, E38-E45Line Mount ..................... J18-J19

Hole Diametervs Lohms ................................. M4

Hole Tolerance (plugs) ............... A5Hydamp ...................... K6, K10-K11Hydraulic Power ............... M18-M19

I

ISO 4406 ................................ M62*Identification

Component ............... See MarkingInserts

Check Valves ................... E3-E5Floserts .................................. C5Flow Controls .................. C2-C5Installation of ................. L19-L27Nozzles ............................ D2-D3Relief Valves .................... F3-F7Restrictors ...................... B3-B15Shuttle Valves ................. G2-G5Three Port ....................... G2-G3

Inspection (plugs) ........................ L3

InstallationForces .................................... L5Inserts ............................ L21-L27Kipster .................................. L36MicroJet ................................ L32Plugs ................................. L4-L5Safety Screens .............. L33-L35Visco Jets Cartridge ...... L28-L31

Interflow .................................... G2*Intermediate Pressure

(between 2 Restrictors) ......... M42

J

JP-4Bulk Modulus ....................... M25Coefficient of

Thermal Expansion ........... M25JP-4, cont.

Flash Point .......................... M25Pour Point ............................ M25Specific Gravity ........... M16-M17Specific Heat ....................... M20Vapor Pressure ................... M31Viscosity ...................... M14-M15

Jet (Lee)Bender Jet ............. B5, B28-B295K Lee Jet .................... B50-B53Hiwatt Jet ............... B4, B20-B21Insert ..................... B4, B16-B19Kilowatt Jet ................... B22-B23Lee MicroJet ................. B24-B27Line Mount ......................... J6-J8

K

K ConstantLiquid Flow (Lohm Formula)


................................ M32-M35Kilowatt Jet ........................ B22-B23Kinematic Viscosity,

Definition of ............................ M87Kipster ........................ K6, K12-K13

D

INDEX IV


MicroJet ............................ B24-B27MIL-H-83282 Fluid

Bulk Modulus ............... M24-M25Coefficient of

Thermal Expansion ... M24-M25Flash Point .......................... M25Pour Point ............................ M25Specific Gravity ........... M16-M17Specific Heat ....................... M20Vapor Pressure ................... M31Viscosity ...................... M14-M15

Military SpecsMIL-A-8625 ........................... A5*MIL-F-85720 .......................... J3*MIL-H-5440 ........................... K3MIL-I-45208A .......................... IVMIL-Q-9858A .......................... IVMIL-S-5002 ........................... A5*MIL-STD-105D ....................... IVMIL-STD-45662 ...................... IVMIL-V-19068 .......................... G2MS33514 ............................... J3*

Minimum PassageInserts ................................ M60*Restrictors ........................... B15

Momentum ForcesGas ...................................... M47Liquid ................................... M22

Momentum Pri ............. F3, F20-F23Monel Plugs .............. A4*, A30-A33Motors, Graphic Symbol .......... M84Multi-Orifice

Restrictors ...... B28-B49, B58-B63

N

NAS 1638 ......................... M62-M63Nomogram, Lee Tri Flow ............ F7Nozzles

Lubrication Jet ............... D6-D17Principle ........................... D2-D3Spin Jet ........................... D4-D5

L

L-4 Safety Screen ............ H38-H41Landing Gear,

Components for ................. G2-G3Line Mount

Axial Visco Jets ............. J13-J14Hi-Q Chek Valve ............ J18-J19Inserts in Unions .............. J6-J12Rosán Adaptors,

Components in ............ J20-J51Visco Jets,

Cartridge type ............. J15-J17Liter Conversion Factors

From Mass to Water ............ M77To Mass of Water ................ M76To other units ...................... M74

Liquid Flow ............ See Lohm LawsLohm Laws

Constant KLiquid Flow (Lohm Formula)


................................ M32-M35Definition of ........................... M3Gas Flow ..................... M32-M54Group Resistance ............ M7-M8Hydraulic Power .......... M18-M19Liquid Flow .................... M5-M17Momentum Forces ..... M22, M47Parallel Flow .......................... M7Pneumatic Power ........ M52-M53Series Flow ...................... M7-M8Snubbing ............................... K4Software for ......................... M93

M

Marking, Component ................ M88Mass Conversion Factors ........ M73Master Sets ....................... B13-B14Materials Plugs ..................... A4-A5Metric

Dimensions of Inserts .......... M86Dimensions of Plugs ............. L14Plugs ............................ A34-A45

Micro Damp ............... See Dampers

INDEXVO

One-Way RestrictorSee Directional Flow Control

Orifice ..................... See RestrictorsOversize

Inserts ............................ L22-L23Plugs ................. L7, L8-L10, L18

P

PC Software ............................. M93Pri .................... See Relief ValvePatents ..................................... M92Peak Pressure

Recorders .................. See Kipster

Pilot Operated Cheks .... E4, E64-E65Pilot-Operated Checks,

Graphic Symbol ..................... M85Piloting Solenoid Valve ......... I1-I11Pin Jacking Tool ........................ L24Plug Jets .................................. A55Plugs

Boss Stress .................... A7-A14Certificate of

Performance ........................ L3Color Code ............................. L3Elongation ............................. A7Flushness Tolerance .............. L5High Strength ............... A52-A54Hole Tolerance ..................... A5*Installation Tools .................... L4Metric ............................ A34-A45Principle of ............................. A3Proof Pressure ...................... A5R.F.O. ........................... A46-A50Stress Corrosion ........... A14-A15Surface Treatment of Holes .. A5

Pneumatic Power ............. M52-M53Pour Point ................................ M25Pressure

Conversion Chart ................ M81Conversion Factors ............. M75Damping ............... See DampersEffect on Bulk Modulus ........ M27

Measurement .......... See KipsterReducing Valve

Graphic Symbol ................ M85Raising Valve ...See Relief ValvesRatings ........................ M65-M71Recorder .................. See KipsterRelief ............. See Relief ValvesSwitch

Graphic Symbol ................ M85Transients ............. See Dampers

See Pressure RatingsPressure Compensated

Flow Control .............. See FlosertPressure Ratings

Government/IndustryStandards ............................ M66Lee Chek andRelief Valves ............... M68-M69Restrictors andBidirectional Flow Control .... M67Standard Line Mount ........... M71Standard Shuttle Valves ...... M71

Pressure, Vapor ....................... M31Process Specification ............... M93Proof Pressure ................................

See Pressure RatingsProprietary Rights .................... M89Publications (Directory) ............ M93Pulsation Damper ..... See DampersPumps, Graphic Symbol .......... M84

Q

Quality Assurance ....................... IVQuick Disconnect

Graphic Symbol ..................... M85

R

R.F.O. PlugFeatures of ............ A4, A46-A50Installation ..................... L15-L18

Registered TrademarksSee Trademarks

ReinstallationL-4 Safety Screen ................. L34Inserts ................................... L22* Topic briefly discussed

on related subject

D

INDEX VISafety Screens

Boss Mount ........................ H18,................ H30-H33, H56-H76

Clogging ................................ H9Construction Method

Etched ............................. H16Drilled .............................. H17

Filters vs. Safety Screens ...... H8Flange Mount ...................... H18

................ H24-H29, H48-H55Graphic Symbol ................... M83HI-BAR ...................... H48-H101HI-BAR Boss Access ... H78-H85Hole Sizes ........................... H13Insert ................... H19, H34-H37L-4 ....................... H19, H38-H41In Rosán Adaptors .............. H21,

.............................. H86-H101Pressure Rating ............. H11-H12

Relative Rating System ....... H3-H7Special Products ..... H102-H103Spring Retained ... H20, H42-H44TWIS ........................... H20, H45

Saybolt-Furol, Definition ........... M87Saybolt Universal

Seconds, Definition ................ M87SCFM ....................................... M39Screens ........... See Safety ScreensSelector Valve,

Graphic Symbol ..................... M85Servo Valve,

Graphic Symbol ..................... M85Shuttle Valve

Components .................. G2-G13Detented ...................... G20-G27Graphic Symbol ................... M85Inverse ............ G4-G5, G34-G35Landing Gear, Components for

.................................... G2-G3High Pressure Spring Biased

................................ G14-G19Overview ............................... G2Selective ...................... G28-G33Spring Biased ......... G4, G6-G13

Side Exit Cheks .......... E3, E14-E19Skydrol

Bulk Modulus ....................... M25

Plugs .................................... L6*3-Port Inserts ........................ L27

Relief ValvesCross-Port .............................. F6Features of ....................... F2-F7Graphic Symbol ................... M85Hi-Lohm ............. F2-F3, F24-F25High Pressure .................. F3-F4,

.................. F24-F27, F30-F31Line Mount ....................... J6-J12Low Flow ........... F2-F3, F24-F25Low Pressure ................... F2-F6Momentum Free ..... F3, F20-F23Pressure Raising .................... F6Safety Relief ..................... F2-F6Thermal Relief ........ F4, F28-F31

Removal .................. See ExtractionRestrictor Chek .............. C3, C6-C7Restrictors

Axial Visco Jet ...................... B5,.................. B30-B37, J13-J14

Bender Jet ............................ B5,................. B28-B29, B58-B59

CRO (Lee) ................... B13, B64Graphic Symbol ................... M84High Pressure ...... B12, B54-B63High Watt Jet ................ B4, B12,

................. B20-B21, B54-B57Jet (Lee) ................ B4, B16-B19JEVA ..................... B5, B38-B41One-Way ........... C3-C4, C8-C15Master Sets .................. B13-B14Summary Chart ................... B15Visco Jet ........................ B5-B12,

B42-B49, B60-B63, J15-J17Ripple, Pressure

Attenuation of ..................... K3-K6ROB Numbers ...... H3-H7, M55-M59

Definition of ......................... M55Rosán Adaptors,

Lee Products in ................ J20-J51

S

SAE Specs.AS 4059 ............................. M63*

Safety Relief ....... See Relief Valves* Topic briefly discussed

on related subject

INDEXVIICoefficient of

Thermal Expansion ........... M25Flash Point .......................... M25Pour Point ............................ M25Specific Gravity ........... M16-M17Specific Heat ....................... M20Vapor Pressure ................... M31Viscosity ...................... M14-M15

Snubbers ................... See DampersSoftware ................................... M93Solenoid Valves, Piloting ...... I1-I11Specially Fabricated

Components ................... VII, M89Specific Gravity

vs Temperature ............. M16-M17Specific Heat ............................ M20Specifications

Military .......... See Military SpecsProcess ............................... M93SAE .................. See SAE Specs

Spring Retained Safety Screen ............................... H20, H42-H44

Standards, Primary .................. M72Stress, Boss ......... See Boss StressStress Corrosion ...................... A11Surface Treatment of

Installation Holes ..................... A5Symbols, Graphic ............. M82-M85System Filter .......................... M60*

T

Technical Publications ............. M93Temperature

Conversion Chart ................ M78Effects on Bulk Modulus ...... M27

Temperature Rise inHydraulic Fluids

Calculation ........................... M20Nomogram ........................... M21

Thermal Relief Valve ............. F3-F7F28-F31

Threads, Extraction ................... L23Three Port Inserts

Installation of ................. L26-L27Shuttle Valve ................. G2-G33

ToleranceFlushness .... See Flushness Tol.Hole ............ See Hole Tolerance

Tools ........................ See Section LTorque Conversion

Chart ...................................... M80Trademarks ...................... M90-M91Transducer, Pressure

Damping ........................... K3-K5Graphic Symbol ................... M85

Transient Gas Flow .......... M48-M49Transients, Pressure

Dampers ........................... K3-K6Ratings ........................ M65-M71

TWIS Safety Screen ........ H20, H45

U

Unions ............................ J3, J6-J12.................... See Line Mounts.............. See Rosán Adaptors

(Lee Products in)

V

ValvesGraphic Symbol ................... M85Check (Chek) ................... E3-E5Relief (Pri) ........................ F2-F7Thermal (Tri) ..................... F2-F7Shuttle ............................. G2-G5

Vapor Pressurevs Temperature ..................... M31

Video Tapes ............................. M93Visco Jet

Axial ....................... B5, B30-B37Cartridge ....................... B42-B49Insert ........... B30-B37, B42-B43,

................................. B60-B63Line Mount ........................ J6-J8,

................... J13-J17, J20-J28Principle of ...................... B6-B12Snubber ................ K3-K5, K8-K9

ViscosityConversion Chart ................ M79Compensation Factor .......... M13Index .................................... M87Numbers .............................. M87vs Temperature ........... M14-M15

Volume ConversionFactors ................................... M74

D

INDEX VIIIW, X, Y, Z

Warranty .................................. M92Water

Bulk Modulus ....................... M25Coefficient of

Thermal Expansion ........... M25Conversion Factors,

Mass to Volume ................ M77Conversion Factors,

Volume to Mass ................ M76Pour Point ............................ M25Specific Gravity ........... M16-M17Specific Heat ....................... M20Vapor Pressure ................... M31Viscosity ...................... M14-M15

Water Hammer ......................... M23Wax (on pins) .............................. L3

Zero Leak Cheks ........ E3, E20-E25

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