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    Marine Worm Drive Wafer Butterfly Valve

    Size Range: 2~12"(DN50~DN300)

    Pressure: PN10, PN16, JIS5K,JIS10K,JIS16K

    Body Materials: Cast Iron, Ductile Iron, WCB , Stainless Steel, Bronze

    Seat Materials: NBR, EPDM, VITON, PTFE

    Disc Materials: Ductile Iron, WCB, CF8,CF8M, Al-bronze C958

    Stem Materials: SS416, SS304, SS316

    End Connection: Wafer

    Operate: Manual, Worm gear, Pneumatic, Electric-Motorized

    Disc type: With-pin, One stem no-pin, Double stem no-pin


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

    Adoptive Standards:

    Valve Design: API 609,

    Face To Face: DIN3202, BS 5155,MSS SP-67,

    Pressure Test: API 598

    Flange Drilling:ANSI B16.1 class125, BS4504 PN10/PN16, DIN2501 PN10/PN16

    Top Flange: ISO5211


    Single Eccentric Disc-Shaft

    Anti-Blow Out Stem


    Fire safe Design

    Low Friction Body Seat

    Zero Leakage

    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.


    WESDOM Group

    DN A B H1 D D1 L M ØC
    100 100 185 223 220 180 52 M16 197
    125 123 191 223 250 210 56 M16 197
    150 135 206 223 285 240 56 M20 197
    200 163 239 273 340 295 60 M20 246
    250 198 272 273 395 350 68 M20 246
    300 226 317 290 415 400 78 M20 298

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