Knife Gate Valve

Product Details:

Features of Through Conduit Knife gate valves:

Through conduit, full port for Pigging

Bi-direction design

Replaceable Rubber seat, Bubble-tight sealing

Self-cleaning mechanism

Rising stem

Plate Yoke with position indicator

Applicable Standards of Through Conduit Knife gate valves:

A) Design & Manufacture: MSS SP-61, ASME 16.34

B) Face to Face: MSS SP-81, ASME B16.10, EN 558

C) Connection End: ASME B16.5, EN 1092, JIS B2220

D) Test: MSS SP-81

Sizes: 2" - 24" or DN 50 - DN 600

Pressure Rating: Class150 or PN6 - PN16

Materials of valve body: WCB, LCB, WC6, CF8, CF3, CF8M, CF3M, 4A, etc.

Operation: Manual, Gear, Pneumatic, hydraulic and Electric actuator

Product Details:

Product Details:

Range: DN50~1200 , PN60,10,16, 150LB

Actuator: Gear operated, hand wheel, chain wheel, Quick acting lever, Electric, Hydraulic, pneumatic

Main material: stainless steel 316, 304, 316L ,317 ,317L.

Material for main parts

1. Body: CF8/CF8M/CF3/CF3M/A105/LF2/F11 etc

2. Knife: SS304/304L/SS316/316L/WCB/LCB/WC9 etc

3. Stem:  304/316/Cr13% etc

4. Seat: Rubber/Teflon/PTFE/Hard Alloy/Cr13% etc

5. Packing: PTFE/Stringed Graphite etc

Suitable Temperature: -38 To1100 Deg

(Range of temperature subject to the material of sealing and property of medium)

Leakage

Hard seal: grade D(Liquid 0.1*DNmm3/s)

Soft seal: grade A(Zero leakage)

Product Details:

Features:

The knife gate valve has a small installation space, low working pressure, and is not easy to accumulate the sundries, and the price is low.

Specification:

Size: DN50-DN1000

Nominal Pressure: PN6, PN10, PN16.

Flange connection apply for PN6, PN10, PN16.

Pressure rating and temperature:

 Material List:

Product Details:

Product Details:

Product range:

Valve size:2-48” (DN50-DN1200)

Pressure:ANSI class 150-2500(PN16-PN420)

Temperature: -196 to 500°C

Body materials:Carbon steel, stainless steel, alloy steel, duplex steel

Trim (disc/stem):Carbon steel, stainless steel, duplex steel, alloy steel

Technical specifications:

Designs: ASME 16.34/API 6D/API 600/BS 1414

Face-to-face: ASME B16.10

End flange: ASME B16.5, ASME B16.47

BW end: ASME B16.25

Test: API 598/API 6D/BS 6755

Design features:

OS and Y, rising stem

Bolted bonnet with spiral-would gasket

Flexible wedge

Backseat weld-deposited

Threaded or welded seat ring

Renewable seat rings

Extended bonnet for cryogenic service

Flanged or butt welded ends

By pass on request

Locking device optional

Design & Manufacturing Standard

API 600,BS 1414,ASME B16.34

Face to Face:ASME B16.10,BSEN 558

End Connection:ASME B16.5,ASME B16.47,BSEN 1092

Test and Inspection:ISO 5208,API 600,BS 6755

Structure Type:OS & Y,Bolted bonnet,Single Wedge

Operation Method:Manual,Electric Actuator,Pneumatic Actuator

Product Details:

Specifications

Size Range:2-36" (50-900mm)

Pressure Rating:Up to 24" (600mm) 150psi (10bar)

30-36" (750-900mm) 100psi (7bar)

Body Style:Single Piece, Wafer, Lug

Seat Options

Replaceable Metal Seat

Buna-N: -35°-194°F / -37°-90°C

EPDM:  -65°-248°F / -54°-120°C

Viton: -15°-392°F / -26°-200°C

PTFE: -235°-450°F / -148°-232°C

Packing Options

PTFE: 232°C / 450°F

Quad Seal: Buna-N: 90°C / 194°F

Viton: 200°C / 392°F

Copper Wiper: 500°C / 932°F

Graphite: 1000°C / 1832°F

Design: MSS SP-81

Testing: MSS SP-81

Face to Face: MSS SP-81

Drilling: ASME B16.5 CL150, ASME B16.47 CL150

Actuator Options: Hand wheel, Bevel Gear, Pneumatic, Hydraulic, Electric

Product Details:

Product Details:

Working Pressure

DN 50 to 250:10 kg/cm2

DN 300 to 400:6 kg/cm2

DN 450 :5 kg/cm2

DN 500 to 600:4 kg/cm2

DN 700 to 1200:2 kg/cm2

Flange Connection :DIN PN10 and ANSIB16.5(CLASS 150)

Other Flange Connection are available on request such as

DIN PN6

DIN PN16

DIN PN25

ANSI 125

Directives

DIR 98/37/CE(MACHINES)

DIR 97/23/CE(PED)Fluid:Group1(b),2(Cat. I, mod.A)

DIR 94/9/CE(ATEX)

Product Details:

Features:

• MSS SP-81 Stainless Steel, Bonnetless, Knife Gate Valves.
• AWWA C520-10 Knife Gate Valves, 2”/DN50 – 96”/DN2400
• Cast Stainless Steel (SS) body, packing gland, and yoke.
• Precision machined Stainless Steel gate for superior seating capability.
• Rubber seat provides a bi-directional, drip-tight seal across the gate from 0 to 150psig/10barg.
• Gate design withstands full 150psig/10barg rated pressure as required by MSS SP-81.
• Standard replaceable Buna-N resilient seat rated to 225°F/107°C, also available in Neoprene, EPDM, Viton, and other materials.
• Compact wafer configuration to TAPPI and MSS standard face-to-face.
• Heavy duty body design resists deflection from line loads and internal pressure.
• Heavy duty cast Stainless Steel yoke will not bend or twist under extreme loads.
• Easy conversion from handwheel operator to hydraulic or pneumatic cylinder, b
• evel gear, chainwheel, electric motor, or fail safe spring cylinder operator using existing cast yoke.
• Bonnetless, outside screw and yoke, non-rising handwheel, and rising stem.
• Enclosed Bronze stem bushing provides reduced operating torque and protection of the stem bushing in harsh environments.
• Stainless Steel stem resists corrosion.
• Full port ID.

Materials of Construction:

1. Gate -Stainless Steel
2. Body - Stainless Steel
3. Class - 150
4. Seat - Buna-N*
5. Bolts - Stainless Steel
6. Packing - TFE Lubricated Synthetic Packing
7. Gland -Stainless Steel
8. Stem - Stainless Steel
9. Yoke - Stainless Steel
10. Stem - Nut Bronze