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    Pneumatic Wafer Knife Gate Valve



    Temp:≤150 ℃



    Connection Type:Wafer

    TAG: , ,


    Tel: +86-18539246853
    Fax: +86-371-55883235
    E-mail: [email protected]
    Address: ZhengZhou,HeNan,China.

    Product introduction:

    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.


    1. Knife gate valve opening and closing part is the valve plate, the plate movement direction is perpendicular to the direction of the fluid. Knife gate valve can only be fully open and fully closed, can’t be used for adjusted and the throttle.

    2.The valve plate has two sealing surfaces. The two sealing surfaces of the most common gate valve forming the wedge, the wedge angle various according to the valve parameters, usually is 50. Wedge knife gate valve plate can be made into a whole part , called the rigid gate plate; also be made to that can produce small quantities of deformation in order to improve its production process, to make up the sealing surface angle deviations arising during processing, this plate called resilient plate. The seal can only rely on media pressure to seal, which rely on media pressure to ram pressure to the sealing surface of the other side of the seat to ensure the seal, which is self-sealing. 

    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.



    Paper, petrochemical, mining, drainage, food and other industries



    Pneumatic Wafer Knife Gate Valve

    DN L D D1 D2 D0 N-Th d H
    50 43 165 125 99 180 4-M16 18 290
    65 46 185 145 118 200 4-M16 18 310
    80 46 200 160 132 220 8-M16 18 350
    100 52 220 180 156 240 8-M16 18 405
    125 56 250 210 184 260 8-M16 18 450
    150 56 285 240 211 280 8-M20 23 510
    200 60 340 295 266 300 12-M20 23 610
    250 68 405 395 319 340 12-M24 27 765
    300 78 460 410 370 380 12-M24 27 820
    350 78 520 470 429 400 16-M24 27 970
    400 102 580 525 480 450 16-M27 30 1024

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