kga

Clarkson KGA Heavy Duty Slurry Knife Gate Valve3" to 60"

Copyright © 2012 Tyco Flow Control. All rights reserved. CLKMC-0113-US-1203

Flow Control Clarkson is either a trademark or registered trademark of Tyco International Services AG or its affiliates in theUnited States and/or other countries. All other brand names, product names, or trademarks belong to theirrespective holders.

Features• 100% isolation; bubble-tight shut-off results in absolutely zerodownstream leakage.

• Double-seated design provides bi-directional flow and shut-off.

• Heavy-duty, field replaceable elastomer sleeves with internal stiffener.

• Unobstructed flow eliminatesturbulence, minimizes pressure drop across valve.

• No seat cavity where solids can collect and prevent full gate closure.

• Meets a wide range of abrasion,corrosion, temperature, and pressurerequirements.

• May be used in wet or dry serviceseasily dealing with large, heavyparticles and tramp material.

• No metal parts in contact with theflowing slurry.

• No gate or stem packing is required,eliminating packing leakage andmaintenance.

• Adaptable frame (yoke) designfeaturing a top-removal stem nut.

General Applications• Mining

• Power

• Pulp and paper

• Alumina

• Chemical

• Cement

Technical Data Size range: 3" to 24"Operating pressure: 100 psiSize range: 26" to 42"Operating pressure: 75 psiSize range: 48" to 54"Operating pressure: 50 psi

Size range: 60"Operating pressure: 30 psi

Sleeve: Natural rubber standard

Temperatures: Standard sleeve rated to180°F, up to 400°F withproper elastomer selection

Note: Some optional gate materials allow higherpressure ratings, contact your sales representativefor additional information.

Field-proven Clarkson KGA slurry knife gate valvesfeature heavy-duty, full port elastomer sleeves offeringthe ultimate in isolation against heavy slurries.

Open Position:• Gate positioned above sleeves, out of flow

• Matching elastomer sleeves seal againsteach other under a high compression load

• Sleeves act as pressure vessel

• No metal parts in contact with slurry

• Unobstructed port area eliminatesturbulence, minimizes pressure dropacross valve

• No seat cavity where solids can collectand prevent full gate closure

Closed Position:• Gate travels through sleeves to provide blind

flange shut-off, allowing opportunity formedia to expel to atmosphere

• 100% Isolation-bubble tight shut-off resultsin absolutely zero downstream leakage

• When properly installed and maintained, theKGA is designed to provide man-safeisolation

• Double-seated design provides bidirectionalflow and shut-off

• Controlled stroke prevents gate from

penetrating too far, minimizing stress on

sleeve

Standard Configuration

• Housings: Cast ductile iron 3" to 24",carbon steel 26" and larger

• 316 stainless steel gate rated for100 psi (3" to 24")75 psi (26" to 42")50 psi (48" to 54")30 psi (60")

• Carbon steel actuator support frames

• Flat-faced body flanges to match ANSIB16.5 Class 150 (3" to 24") or MSSSP44 (26" to 60") companion flangedimensions

• High tear strength natural rubbersleeves with encapsulated stiffener ring

• Sizes 10" to 60" include natural rubber-covered carbon steel sleeve retainerflanges

Optional

• Various gate materials:316L SS Alloy 20317L MN Alloy C-27617-4 PH 2205Jessop 700 2507Ferralium 255 Others317L SSNote: Some optional gate materials allowhigher pressure ratings, contact your salesrepresentative for additional information.

• Natural rubber-covered carbon steelsleeve retainer flanges are (3" to 8")

• Sleeve elastomers (see page 3)

• Stem covers

• Splashguards

• Actuators

• Control accessories

Sleeve Configurations

Encapsulated Internal Stiffener Ring• Maintains round configuration of sleeve.

• Relieves stresses on seal.


Copyright © 2012 Tyco Flow Control. All rights reserved. CLKMC-01132

Features

How the KGA sleeves work: Matching elastomersleeves seal against each under a highcompression load when the valve is open,creating the valve pressure vessel. When thevalve is closed, the sleeves seal against the gateface, isolating upstream from downstream. Asthe gate strokes, a gap is created between thefacing sleeves, allowing any media that couldpotentially clog or jam the valve to be purgedout from between the sleeves, and potentiallyexpelled outside the valve housing to

atmosphere. The encapsulated internal stiffenerring molded into the sleeve is designed tomaintain the roundness of the sleeves, resistingthe heavy shearing forces during actuation whileretaining the internal line pressure. The uniqueKGA sleeve assembly provides positive sealingaction when the valve gate is closed. When thegate is open, the sleeves provide anunobstructed port and protect metal parts fromthe flowing slurry.

3" to 16" 18" and larger

HC Hydraulic Cylinder EM Electro-mechanical Hydra-Helper

Actuation

Note: Not all actuators shown are available on all valve sizes

MH Manual Handwheel BG Manual Bevel Gear AC Air Cylinder

Gate ClosedGate Open

FeaturesHeavy-duty frame (yoke) designed toaccept top removal stem nut, bevel gear or cylinder actuator.

Optional open and closed lockout/tagoutpositions.

The stainless steel gate is completelywithdrawn from the process flow in the openposition and can be inspected or replacedwithout taking the valve out of service.

316 stainless steel gate is standard.

Packingless design.

Elastomer sleeve molded with an integralstiffener ring to properly center the sleeve in the valve body housing and resist the high shearing forces present when the gate cycles.

Elastomer sleeves provide unobstructedflow area, no metal-to-metal contact, noguides or wedges

Double sleeved configuration is designedprovides a "blind flange" shut-off when thegate is closed. Any potential leakageshould be to atmosphere and notdownstream

Elastomer covered retainer flangeseliminates need for gaskets (optional onsizes 3" to 8", standard on 10" and larger).

Body housing to suit ANSI B16.5/150through 24", sizes 26" and larger suit MSS-SP44

Discharge, clean-out area. Any dischargepurged from valve can be controlled withoptional bottom splash guard

Available Sleeve Materials:

Natural Rubber (standard): This categoryincludes all natural gum elastomers, bothfilled and unfilled and syntheticpolyisoprene. Has high tensile strength,superior resistance to tear and abrasion andgood resistance to heat build-up. Maximumcontinuous operating temperature 180°F.

EPDM-HTP: Advantages - excellentresistance to heat, ozone and sunlight, verygood flexibility at low temperature, goodresistance to alkalis, acids, and oxygenatedsolvents and superior resistance to waterand steam. Limitations - poor resistance tooil, gasoline, and hydrocarbon basedsolvents. Maximum continuous operatingtemperature 300°F.

Optional available sleeve materialsTyco Flow Control offers optional elastomersfor use in the KGA. These and otherelastomers may be available upon requestand review of application and theinstallation. Please contact Tyco FlowControl for additional information.

NBR (Nitrile): Advantages - very goodresistance to petroleum based greases/oils,silicone greases/oils and nonoxidizingchemicals. Good resistance hydrocarbonbased fuels. Limitations - Inferior resistanceto ozone and oxygenated solvents.Maximum continuous operating temperature275°F.

HNBR (Nitrile-HTP): Same as aboveexcept maximum continuous operatingtemperature 325°F

Chlorobutyl: Advantages - Outstandingimpermeability to gases and vapor, verygood resistance to heat, oxygen, ozone andsunlight. Excellent energy absorption andresistance to alkalis and oxygenatedsolvents, superior resistance to water andsteam. Limitations - Poor resistance to oil,gasoline and hydrocarbon based solvents,poor resilience. Maximum continuousoperating temperature, 230°F.

OEM Replacement Sleeves andPartsTo maintain the expected performance ofyour KGA, always use genuine ClarksonOEM sleeves and other replacement partsfrom Tyco Flow Control. Genuine KGAsleeves from Tyco are easily recognized bythe laser etched identifying marks found onthe sleeve O. D. These marks include thesize, part number, applicable patentnumber, elastomer batch compound anddate of manufacture; all of which allowcomplete traceability of the part. ClarksonKGA replacement sleeves from Tyco are theonly ones authorized for use in the KGA andoffer the best fit and continued performancethat non-OEM parts simply cannot give. Theuse of copycat parts may invalidate anyremaining warranty.

Specification

Clarkson KGA Slurry Knife Gate Valve Heavy duty, slurry knife gate valve shall be flat-face flanged, packingless, rubber-lined, bi-directional valve suitable for a wide range of industrial applications. The full port design shall have no internal obstructions and will provide a “blind flange” shut-off when the gateis closed. The valve’s sealing surface is to be between two thick, rubber sleeves that arecompressed into the valve housings. The sleeve will be molded with an internal stiffenerring that locates the sleeve in the valve housing and helps the sleeves resist the highshearing forces present when the gate is driven between them. The stainless steel gateshall be completely withdrawn from the process flow when in the open position, and can beinspected and replaced, if necessary, without taking the valve out of service. When thevalve is in the closed position, the downstream sleeve can be replaced while the upstreamportion of the valve is still holding pressure. Valve body housing to suit ANSI B16.5/150through 24" and MSS-SP44 above 24". Valve is equipped with a heavy steel fabricatedhandwheel frame (yoke) which can be converted to bevel gear in the field, complete with a304 stainless steel rising stem (except cylinder actuated valves). All nonferrous exteriorsurfaces shall be painted to factory standard. Specify Clarkson KGA slurry knife gate valvefrom Tyco Flow Control.





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Metric Dimensions (mm) and Weights (kgs.)Centerline to top Handwheel

Valve MH BG AC HC MH BG WeightSize A* B** C D E F G H J K M M MH BG AC HC

3 190.50 174.75 225.55 480.82 543.05 543.05 623.82 61.21 71.37 401.57 304.8 304.8 22.7 57.6 38.6 22.74 228.60 174.75 279.40 558.80 592.58 608.08 701.80 84.58 98.55 428.75 304.8 304.8 29.0 64.0 59.0 31.8

6 279.40 177.80 330.20 711.20 808.23 766.57 863.60 136.65 147.57 454.15 406.4 304.8 44.5 79.4 81.6 44.58 342.90 184.15 387.35 835.66 864.00 889.00 973.07 174.75 196.85 482.60 508.0 304.8 61.2 96.2 95.3 61.2

10 406.40 225.55 420.62 984.25 1082.80 1028.70 1123.95 230.12 249.17 594.36 508.0 609.6 89.8 124.7 140.6 79.412 482.60 257.30 533.40 – 1205.23 1155.70 1349.50 273.05 292.10 647.70 – 609.6 – 193.7 303.5 163.3

14 533.40 257.30 577.85 – 1354.07 1357.12 1468.12 317.50 336.55 670.05 – 609.6 – 203.2 326.6 187.816 596.90 279.40 615.95 – 1452.88 1528.83 1627.12 355.60 374.65 701.55 – 609.6 – 259.9 510.3 249.5

18 635.00 311.15 673.10 – 1695.45 1717.55 1746.25 377.95 425.45 770.89 – 609.6 – 396.9 603.3 430.920 698.50 358.90 720.85 – 1827.28 1866.90 1890.78 420.62 469.90 794.77 – 609.6 – 478.1 762.0 544.3

24 812.80 371.60 858.52 – 2189.23 2235.20 2276.60 538.23 584.20 882.65 – 609.6 – – 997.9 635.026 869.95 365.25 933.45 – – – 2378.20 596.90 635.00 – – – – – – 771.1

28 927.10 378.00 933.45 – – – 2378.20 596.90 635.00 – – – – – – 816.530 984.25 395.48 1054.10 – – – 2697.23 679.45 736.60 – – – – – – 1089.032 1060.45 411.23 1054.10 – – – 2697.23 679.45 736.60 – – – – – – 1315.536 1174.75 469.90 1225.55 – – – 3028.95 809.75 889.00 – – – – – – 1724.0

42 1346.20 534.16 1435.10 – – – 3700.27 971.55 1041.40 – – – – – – 2585.548 1511.30 536.70 1532.89 4019.55 1117.09 – – – 1314.45 – – – – – – 3161.5

54 1681.23 527.05 1708.15 – – – 4391.15 1244.09 1524.00 – – – – – – 3754.860 1854.20 533.40 1955.80 – – – 4781.55 1451.10 1524.00 – – – – – – 4309.1

* Flange diameter: Designed to match ANSI B16.5/150 through 24", MSS-SP44 above 24"

** Face-to-face includes the retainer flanges, all sizes. Retainer flanges are standard sizes 10" and larger, optional on 8" and smaller. Add 1/4" to 1/2" for ease of installation

Dimensions (inches) and Weights (lbs.)Centerline to top Handwheel

Valve MH BG AC HC MH BG WeightSize A* B** C D E F G H J K M M MH BG AC HC

3 7.50 6.88 8.88 18.93 21.38 21.38 24.56 2.41 2.81 15.81 12 12 50 127 85 504 9.00 6.88 11.00 22.00 23.33 23.94 27.63 3.33 3.88 16.88 12 12 64 141 130 70

6 11.00 7.00 13.00 28.00 31.82 30.18 34.00 5.38 5.81 17.88 16 12 98 175 180 988 13.50 7.25 15.25 32.90 34.00 35.00 38.31 6.88 7.75 19.00 20 12 135 212 210 135

10 16.00 8.88 16.56 38.75 42.63 40.50 44.25 9.06 9.81 23.40 20 24 198 275 310 17512 19.00 10.13 21.00 – 47.45 45.50 53.13 10.75 11.50 25.50 – 24 – 427 669 360

14 21.00 10.13 22.75 – 53.31 53.43 57.80 12.50 13.25 26.38 – 24 – 448 720 41416 23.50 11.00 24.25 – 57.20 60.19 64.06 14.00 14.75 27.62 – 24 – 573 1125 550

18 25.00 12.25 26.50 – 66.75 67.62 68.75 14.88 16.75 30.35 – 24 – 875 1330 95020 27.50 14.13 28.38 – 71.94 73.50 74.44 16.56 18.50 31.29 – 24 – 1054 1680 1200

24 32.00 14.63 33.80 – 86.19 88.00 89.63 21.19 23.00 34.75 – 24 – – 2200 140026 34.25 14.38 36.75 – – – 93.63 23.50 25.00 – – – – – – 1700

28 36.5 14.88 36.75 – – – 93.63 23.50 25.00 – – – – – – 180030 38.75 15.57 41.50 – – – 106.19 26.75 29.00 – – – – – – 240032 41.75 16.19 41.50 – – – 106.19 26.75 29.00 – – – – – – 290036 46.25 18.50 48.25 – – – 119.25 31.88 35.00 – – – – – – 3800

42 53.00 21.03 56.50 – – – 145.68 38.25 41.00 – – – – – – 570048 59.50 21.13 60.35 158.25 43.98 – – – 51.75 – – – – – – 6970

54 66.19 20.75 67.25 – – – 172.88 48.98 60.00 – – – – – – 827560 73.00 21.00 77.00 – – – 188.25 57.13 60.00 – – – – – – 9500

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