owens knife gate valves | yxen service inc

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Pressure rating: up to 150 psiSizes: DN 50-1200All stainless steel

KNIFE GATE VALVES

YXEN SERVICE INC

YXENSERVICE.COMOWENS KNIFE GATE VALVES

YXEN SERVICE, INC. is a company dedicated to the purchase, sale, and distribution of materials, spare parts and equipment for oil, carbonif-erous and marine industry, among others.

You can rest assured that no matter the economy, you can count on us to provide you with the service you need and the parts you require. We have a highly trained staff of specialized technicials and a network of reliable suppliers, guaranteeing the quality you demand.

ABOUT US

1. Corporate Overview

2. Product Features

3. Main Features

4. General Applications

5. Standard Compliance

6. Other specialties

7. Advantages

8. Models and Parts

9. Handling

10. Installation

11. Actuators

12. Maintenance

CONTENT TABLE

YXEN SERVICE INC.OWENS KNIFE GATE VALVES

At Yxen Service, Inc. we strive to main-tain excellent relations with our clients and suppliers. If you are a manufactur-ing contractor of perforation or are in the oil and petrochemical industries in general, you can choose us knowing that we are the best.

THE BEST SOLUTIONS FOR THE MODERN INDUSTRY

YXENSERVICE AT A GLANCE

HistoryFounded in 2006

Product lineA world-leading distributor acrossall major industrial applications:• Cast steel gate, globe, check,and ball valves• Forged steel gate, globe, check,and ball valves• Triple-offset butterfly valves• Knife gate valves• Severe service valves• Bellows seal valves• Steam traps

QualityAll major certifications and approvals• ASME stamp and NPT for nuclearvalves• ISO 9001Currently certified to ISO 9001:2008• PED• GOST (TR and RTN)• API 6A and API 6D• TA-Luft

CORPORATE OVERVIEW


PRODUCT FEATURES

MAIN FEATURES• 150-psi CWP design.• Higher pressure ratings available.• Patented, field replaceable elastomersleeves.• Dynamic self-adjusting secondary seal.• Long lasting lubrication.• No metal parts in contact with theflowing slurry.• Unobstructed flow eliminatesturbulence, minimizes pressure dropacross valve.• 100% Isolation-bubble tight shut-offresults in absolutely zero down-streamleakage.• Double-seated design provides bi-directional flow and shut-off.• No seat cavity where solids can collectand prevent full gate closure.

• No gate or stem packing is required,eliminating packing leakage andmaintenance.• Adaptable frame (yoke) designfeaturing a top-removal stem nut, canbe field modified to an air cylinder orbevel gear in the field without welding.

GENERAL APPLICATIONS• Mining• Power plants• Pulp and paper• Wastewater treatment plants• Chemical plants• Food and beverage• Bulk handling


Simple installation of Actuators or electric limit switches. High functional reliability thanks to robust design

Reliable sealing to atmosphere. Easy to replace without having toremove the valve from the piping. Readjustable while in operation

Low pressure losses Perfect fit, reliable adjustment of U-shaped rod seal in the body

1. ROBUST AND COM-PACT MOUNTING YOKE MADE OF STEEL

2. GLAND PACKING MADE OF PTFE IMPREG-NATED FIBRES

3. SINGLE PIECE (UP TODN500) OR TWO PIECE BODY WITH FULL BORE,MACHINED INSIDE

STANDARD COMPLIANCE• MSS SP-81• ASME B16.10 • ASME B16.5 • ASME B16.47 • ASME B16.34• AS 2129 T/D or T/E • BS 4504 T/D or T/E • MSS SP-55 • EN 1092

OTHER SPECIALTIES

Lug Knife Gate Valves covering Resilient and Metal to Metal, Ends connections in fully lugged. Size ranges from 2” to60” diameter, pressures in PN6, PN10, PN16, ANSI # Class 125 & Class 150. A broad body and trim materials are selectedand fabricated to suit for various service conditions

• Optional top flanges to ISO 5211• Qualified for both gaseous and liquid services• Uni- or Bi-direction• Materials: Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel, Alloy Steel, Duplex steel• Pressure Ratings: ANSI 150#, PN10, PN16• Size Ranges: 2” to 60”- 50mm to 1500mm (Larger sizes upon request)• Actuations: Manual, Pneumatic, Electric, Hydraulic (Counterweight) & Electro-hydraulic

4. FLUSHING CORNERS IN THE BODYSeat is flushed clean when the valve closes

Ideal in confined spaces

Gate valve highly protected against corrosion

Excellent tightness in either flow direction. No danger of deposits. No fluttering of the disc. Long service life

5. NON-RISING STAIN-LESS STEEL STEM, NON-RISING HANDWHEEL

6. CAST IRON AND STEEL COMPONENTS EPOXY COATED ASAN OPTIONAL

7. STAINLESS STEEL VALVE DISC POL-ISHED ON BOTH SIDES, SEALED BY CONFINED U-SHAPED ROD SEAL FOR THE ENTIRE VALVE TRAVEL

8. FLANGE SEALS INTE-GRATED IN THE BODY AS A STANDARD (O-RING)No further seal required between flange and valve. Installation-friendly as no external flange seals need to be fitted


WHAT MAKE OUR KNIFE GATE VALVES BETTER

ADVANTAGES

MORE DURABLE THAN ANY OTHER KNIFE GATE VALVE IN THE MARKET

HIGH PRESSURE SUPPORT, UP TO 150 PSI



SEAL MATERIALS

STAINLESS STEEL BODY

WHITE EPDM STANDARD

(250 °F TO 280 °F)

WHITE VITON AVAILABLE

(230 °F TO 350 °F)

CARBON STEEL BODY

BLACK EPDM STANDARD

(215 °F TO 280 °F)

BLACK VITON AVAILABLE

(230 °F TO 350 °F)

WIDE RANGE OF SIZES.

AVAILABLE IN SIZES 2”~60”. WITH ANSI 125/150 FLANGE DRILLING OR AN OPTION FOR DIN OR OTHER STANDARD.

TRAVEL STOP

HANDWHEEL LOCKING PROVISION

HEAVY DUTY YOKE (STAINLESS STEEL AVAIL-ABLE)

BROAD LINE OF MATERIALS.

THE SOLID CAST STAINLESS STEEL BODY IS OFFERED IN ALLOYS 304, 316, OR 317L WITH EITHER CARBON STEEL OR STAINLESS STEEL TOP-WORKS. SPECIAL ALLOYS ON REQUEST. CAST DUCTILE IRON BODIES ARE OFFERED WITH CARBON STEEL TOP-WORKS.STAINLESS STEEL TAB WASHER

MANGANESE BRONZE STEM NUT

STAINLESS STEEL STEMELASTOMER SEAT

SEAT FLUSH WITH BORE OF VALVE

SOLID CAST STAINLESS STEEL BODY

STAINLESS STEEL GATE

DIFFERENT BOLT CIRCLE TO EN / ANSI / JIS

ACCESSORIES

OPTIONAL

ACTUATORS

PNEUMATIC

ELECTRIC

GEAR OPERATORS

CHAIN WHEELS

FLOOR STANDS

POSITIONERS

PNEUMATIC

ELECTRO-PNEUMATIC

SWITCHES

LIMIT SWITCHES, YOKE

MOUNTED

PROXIMITY SWITCHES,

YOKE MOUNTED


Models and parts

MODELSONE PIECE BODY: DN50-DN800 TWO PIECE BODY: DN 900-DN 1200


ONE PIECE BODY: DN 50- DN 800 TWO PIECE BODY: DN 900- DN 1200


FLANGE DRILLING

EN 1092 PN 10

EN 1092 PN 10

EN 1092 PN 16

EN 1092 PN 16


FLANGE DRILLING

JIS B 2238 10K

JIS B 2238 10K

ANSI B16.5 CLASS 150

ANSI B16.5 CLASS 150


HANDLING

WHEN HANDLING A KNIFE GATE VALVE PLEASE PAY ATTENTION TO THE FOLLOWING POINTS:

1. Do NOT attach lifting gear to the valve actuators or gate guards. They are not designed to bear the weight, and could easily be damaged.

2. Do NOT lift the valve by the valve bore.This can cause damage to the seating surfaces and seals.

3. Check that selected lifting gear is rated to carry the weight of the valve.

4. The valve can be handled using eyebolts, soft straps or slings.

5. Eyebolts: make sure the eyebolts have the same thread as the boltholes and they are all well secured. Ideally when using lifting gear to move a knife gate valve, it should be supported by two or more eyebolts screwed into the tapped fixing holes in the valve body.

6. Soft straps: with the valve in the closed position, the straps should be placed between the gland area and the bore such that the valve is balanced.

The valves are packed according to the appropriate transport standards. If you receive the packing damaged, please inform

HANDLING WITH SOFT STRAP


INSTALLATIONTO AVOID PERSONAL INJURY OR DAMAGE TO PROPERTY FROM THE RELEASE OF PROCESS FLUID:

1. Those in charge of handling and maintenance of the valve must be qualified and trained in valve operations.

2. Use appropriate personal protection equipment (gloves, safety shoes, etc).

3. Shut off all operating lines to the valve and place a warning sign.

4. Isolate the valve completely from the process.

5. Release process pressure.

6. Drain the process fluid from the valve.

7. During installation and maintenance operations, use hand tools (non electric) with Working Allowance.

Before installation, inspect the valve body and components for any damage that may have occurred during shipping or storage. Make sure the internal cavities within the valve body are clean. Inspect the pipeline and mating flanges, making sure the pipe is free of foreign material and that the flanges are clean.

The valve is unidirectional. It should be installed with pressure exerted against the seat. The words “SEAT SIDE” are marked on the valve body to indicate the position of the valve seat. Installation and the correct orientation with respect to the direc-tion of the flow is the responsibility of the user. It should be noted that the direc-tion of flow and differential pressure, do not always coincide.

It should be noted that the direction of flow and differential pressure, do not always coincide.


Special care should be taken to maintain the correct distance between the flanges and to en-sure that they are parallel to the valve body. Incorrect alignment of the valve can cause defor-mations, which can lead to difficulties in operation.

The valve can be mounted in any position with regard to the pipe. However, it is advisable to place it vertically in horizontal pipeline (A) if the installation allows it.

With larger diameters (> 300 mm), heavy actuators (pneumatic, electric, etc.), or with the valve installed horizontally (B) or at an angle (C) on a horizontal pipeline, the installation will require the construction of suitable supports.

In vertical pipelines, the construction of suitable supports is always required.Once the valve is installed, test that the flanges have been fastened correctly and that all electri-cal and/or pneumatic connections have been properly made.


ACTUATORSHANDWHEEL

Turn the hand wheel anticlockwise to open the valve. Turn the hand wheel clockwise to close the valve.

PNEUMATIC

Valves are usually supplied with a double acting pneumatic actuator although, upon request, we can supply single-acting actuators. In either case the feed pressure can vary between 3,5 and 10 Kg/cm2.However, the size of the actuator for each valve has

been designed for a feed pressure of 6 Kg/cm2. It is essential for a good maintenance of the cylinder that air should be well dried, filtered and lubricated. It is recommended to actuate the cylinder 3-4 times before the start up, once it is installed in the pipeline.

ELECTRIC ACTUATOR

Depending on the type or make of the electric actuator, specific instructions (i.e. a manufacturer’s manual) will be supplied.

MAINTENANCETO AVOID PERSONAL INJURY OR DAMAGE TO PROPERTY FROM THE RELEASE OF PROCESS FLUID:

1. Those in charge of handling and maintenance of the valve must be qualified and trained in valve operations.

2. Use appropriate personal protection equipment (gloves, safety shoes, etc).

3. Shut off all operating lines to the valve and place a warning sign.

4. Isolate the valve completely from the process.

5. Release process pressure.

6. Drain the process fluid from the valve.

7. During installation and maintenance operations, use hand tools (non electric) with Working Allowance.

The only maintenance required is to change the gland packing or the seal if the valve is a resilient seated type.

The life of these components will depend on the working conditions of the valve such as: pressure, temperature, abrasion, chemical action, number of operations, etc.


REPLACEMENT OF THE GLAND PACKING:

1. Depressurise the circuit and place the valve in close position.2. Remove the gate guards (for automatically actuated valves only).3. -Rising stem valves. Photo 1: Release the spindle or stem from the gate. -Non rising stem. Photo 2: Release the stem nut from the gate.

4. Loosen the screws of the yoke and remove it (without loosing the actuator).5. Loosen the nuts of the gland follower and remove it. (Photo 3)6. Remove the old packing rings and clean the stuffing box.7. Insert the new packing rings, making sure that the ring joints alternate (the first on one side of the gate, the next on the other and so on). (Photo 4)8. Once the necessary packing rings have been inserted, proceed with a steady initial tighten-ing of the gland follower.(Photo 3)9. Place the yoke (with the actuator) and screw it.10. Fix the stem to the gate ( Rising stem valves.Photo 1) or fix the stem nut to the gate.(Non rising stem. Photo 2).11. Remount the gate guards.12. Carry out some operations with a loaded circuit and then re-tighten the gland follower to prevent leakage.


REPLACEMENT OF THE SEAL(ONLY APPLICABLE TO RESILIENT SEATED VALVES)

1. Remove the valve from the pipeline.2. Remove the gate guards (for automatically actuated valves only).3. Release the spindle or stem from the gate.(Rising stem valves. Photo 1) or release the stem nut from the gate.(Non rising stem. Photo 2).4. Loosen the screws of the yoke and remove it (without loosing the actuator).5. Loosen the nuts of the gland follower and remove it.(Photo 3)6. Remove the old packing and the gate and clean the stuffing box.7. Remove the seal retainer ring which support the seals.8. Remove the worn seal and clean the seal housing.9. Once the new seal is cut according to size, insert it into the seat housing (making sure that the union of the seal is at the top).

LUBRICATION

Twice a year, it is recommended to remove the protection cap (11) and fill up the stem protector halfway with a calcium-based grease with the following characteris-tics: highly water resistant, low ash content, and excellent adherence.

NOTES

Maximum Working differential pressureDN50~250: 10 BarDN300~450: 7 BarDN500~600: 4 BarDN700~900: 2 BarDN1000~1200: 1 BarMaximum Working TemperatureNBR: 80 °CEDPM: 110°C

1. For long storage periods keep the valves indoors in a safe and dry place and protect it from any impact and or vibrations.

2. Storing temperatures: -10oC to +40oC

3.Valves must be stored in either full open or full closed position.

4. For any component installed in the valves, electric motors, solenoid valves, etc, please refer to their own instructions manuals.

owens knife gate valves | yxen service inc

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