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    ANSI Wafer Knife Gate Valve



    Temp:≤150 ℃


    Material:WCB/Cast Iron/Stainless Steel

    Connection Type:Wafer

    TAG: , ,


    Tel: +86-13849184495
    Fax: +86-371-55883235
    E-mail: weisidun@wsdvalve.com
    Address: ZhengZhou,HeNan,China.

    What is a knife gate valve?

    The knife gate valve is also known as knife gate valve. Its main function is to control the flow of liquid or gas by moving the knife-shaped valve plate up or down. The name of the knife gate valve is from its special valve structure. It is an open and closed valve, which is usually used to perform comprehensive cut off operations during the circulation of the medium.

    The knife gate valve has the characteristics of simple structure, flexible switching, small starting power, super small design space, and good sealing performance. It can withstand the working environment of high temperature, high pressure, and strong corrosive media. It is usually used in pipelines systems in oil, chemical, electricity and other industries. It is a very important pipeline control device.

    Advantages of the knife gate valve:

    1. Good corrosion resistance

    The stainless steel has excellent corrosion resistance and oxidation resistance. It can withstand various corrosive media, which is more durable and reliable.

    2. Good sealing performance

    The structure of the knife gate valve is implemented by compulsory sealing, rather than relying on the clamp and other auxiliary parts to achieve. Therefore, the sealing performance is very excellent ,which can effectively prevent fluid leakage.

    3. Convenient maintenance

    Due to the knife gate valve has simple structure, the maintenance cost is relatively low and it is easy to clean and maintain. It can ensure that the service life is sufficient.

    4. Wide range of application

    The knife gate valve is suitable for a variety of media such as fluid, gas, dust, food and other media. It mainly depends on the selection of valve materials and use of working conditions.

    In general, the material of knife gate valve is generally ductile iron, gray iron, carbon steel, stainless steel, etc. Different materials have different corrosion resistance and wear resistance, it is suitable for different media.

    For example:

    (1) For corrosive media, such as chloride, acid and alkali, usually choose stainless steel or PVC material knife gate valve;

    (2) For high temperature, high pressure and high wear resistance requirements of the medium, usually choose steel or nickel-based alloy processed knife gate valve;

    (3) For industrial gypsum, cement powder and other equipment atmosphere transport medium, usually choose ductile iron knife gate valve.

    WESDOM  advantages

    1. WESDOM patent products, patent certification
    The product side flanges comply with national, German, Russian, American, British and Japanese standards and other domestic and international standards for multiple pressures, easy connection and wide adaptability, which can reduce the type of purchase and stock.

    2. The product has an independent identity to ensure traceability
    Each wesdom product has its own unique identification number, to ensure product traceability.

    3. Provide material inspection report
    All wesdom products can provide the material inspection report of the main parts.

    4. One-stop service
    One-stop service, we not only supply high quality products, also supply solutions and after-sales service.

    5. WESDOM has a lot of project experience
    We have a lot of project experience in countries such as Pakistan and the Philippines, WESDOM has always been noticed all over the world, and trust comes from quality.

    Quality control process

    quality control process

    Standard Test

    Body Test: 1.5 times the working pressure with water. This test is performed after valve assembly and with disc in half position open, it is called as a body hydro test.

    Seat Test: 1.1 times the working pressure with water.

    Function / Operation Test: At the time of final inspection, each valve and its actuator (Flow-Control Lever / Gear / Pneumatic Actuator), under goes a complete operating test (Open/Close). This test carried out without pressure and at ambient temperature. It ensures the correct operation of the valve / actuator assembly with accessories such as solenoid valve, limit switches, air filter regulator etc.

    Special Test: On request, any other test can be carried out according to special instruction by client.


    quality control process



    ANSI Wafer Knife Gate Valve


    DN L D D1 D2 D0 N-Th d H
    50 48 152 120 92 180 4-11 19 290
    65 48 178 139 105 200 4-11 19 310
    80 51 190 152 127 220 4-11 19 350
    100 51 220 190 157 240 8-11 19 405
    125 57 254 216 186 260 8-10 22 450
    150 57 279 241 216 280 8-10 22 510
    200 70 343 298 270 300 8-10 22 610
    250 70 406 362 324 340 12-9 25 765
    300 76 483 432 381 380 12-8 25 820
    350 76 533 476 413 400 16-8 29 970
    400 89 597 539 470 450 16-8 29 1024
    450 89 635 578 533 530 16-8 32 1235

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