Pneumatic Knife Gate Valve1
Pneumatic Knife Gate Valve2
Pneumatic Knife Gate Valve3
Pneumatic Knife Gate Valve4

Pneumatic Knife Gate Valve

Size Range: DN50-DN300

Pressure: PN10

Body Materials: WCB

Seat Materials: EPDM

Disc Materials: Rubber/Stainless Steel/Hard Alloy/PTFE

Stem Materials: 2Cr13/304


Knife gate valve is also named  slurry valve, mud valve. Its opening and closing part is a gate.The medium is cut by a blade-shaped gate that can cut fiber materials; It rises and falls in the side guide groove, and is pressed against the valve seat by the lugs at the bottom. If a higher medium tightness is required, an O-shaped sealing valve seat can be used to achieve two-way sealing. The knife gate valve has a small installation space, low working pressure, long service life and simple maintenance.

Suitable Medium:Molasses, pulp, sewage, coal pulp, ash, slag water mixture.

Working Temperature: 0℃~80℃

Application field:Chemistry, water treatment, coal power plants, food, paper, petroleum.

Product Advantages

1. Precision casting valve body, fine appearance, no trachoma.

2. Valve wedge is burnished smoothly 3 times and polished 5 times to ensure the sealing porformance.

3. Valve stem is equipped with bearing to reduce friction.

4. Rubber coated PTFE packing seal, which can increase the elasticity and reduce the leakage of upper seal.

5. U-shaped sealing ring of the seat to ensure the strong conbation between valve seat and body.

6. Each valve will be tested shell and sealing pressure before leaving factory.

7. 250 μm epoxy coating, it can effectively prevent corrosion and rust.
8. The protection level of pneumatic actuator is IP67.


Parameter Information:
Optional 1 2 3 7 8
Body Seat Wedge Stem Actuator
DI/WCB/CF3/ CF3M/CF8/ CF8M Rubber/Stainless Steel/Hard Alloy/PTFE WCB/201/CF3/ CF3M/CF8/ CF8M 2Cr13/304 Pneumatic actuator
Executive standard:
Name Design and manufacture Face to face Length Pressure Test  End Flange 
Reference Standard JB/T 8691-2013
GB/T 12221-2005
GB/T 13927-2008 GB/T 9113-2010
DIN EN 1092-1
ASME B16.5
Material of Main Parts:
Name 1-Body 2-Seat 3-Wedge 7-Stem 8-Actuator
Material WCB EPDM SS304 SS420 Pneumatic actuator
Size   PN10 PN16 150LB
DN NPS(inch) L D1 N-M Z-φC D1 N-M Z-φC D1 N-UNC Z-φC
50  2'' 48 125 2-M16 2-φ18 125 2-M16 2-φ18 120.7 2-UNC5/8-11 2-φ19
65  2  1/2'' 48 145 2-M16 2-φ18 145 2-M16 2-φ18 139.7 2-UNC5/8-11 2-φ19
80  3'' 51 160 2-M16 2-φ18 160 2-M16 2-φ18 152.4 2-UNC5/8-11 2-φ19
100  4'' 51 180 2-M16 2-φ18 180 2-M16 2-φ18 190.5 2-UNC5/8-11 2-φ19
125  5'' 57 210 2-M16 2-φ18 210 2-M16 2-φ18 215.9 2-UNC3/4-10 2-φ22
150  6'' 57 240 2-M20 2-φ22 240 2-M20 2-φ22 241.3 2-UNC3/4-10 2-φ22
200  8'' 70 295 2-M20 2-φ22 295 2-M20 2-φ22 298.5 2-UNC3/4-10 2-φ22
250  10'' 70 350 4-M20 2-φ22 355 4-M24 2-φ26 362 4-UNC7/8-9 2-φ25
300  12'' 76 400 4-M20 2-φ22 410 4-M24 2-φ26 431.8 4-UNC7/8-9 2-φ25

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