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  • Wafer Dual Check Valves
  • C22
  • GENERAL INFORMATION

    Series C22 wafer dual check valve is a self-operating check valve that is desirable to permit flow in one direction and prevent backflow in the opposite direction. The plates open in case that the upstream pressure exceeds the downstream pressure and the spring elasticity. When the flow velocity upstream decreases or ceases, the spring will automatically close the dual plates prior to flow reversal. This creates a positive shutoff against flow reversal and eliminates system surges and water hammer.

    FEATURES

    • Short face-to-face dimension Lighter weight than conventional full-body check valves
    • Low cracking pressure because of double disc design?The stop shaft stabilizes the plates under high flow rates• Long leaf springs prevent rubbing of plates on seat

    ConnectionWafer
    Nominal diameterDN50-DN1200
    Pressure ratingPN10, PN16, PN25 ANSI CLASS150
    Face to faceEN558 series 16 for rubber seat, API 594 for metal seat
    Coating on steel bodyPainting system B

    No.Part nameMaterial
    1BodyWCB, CF8, CF8M
    2DiscCF8, CF8M
    3StemSS304, SS316
    4SpringSS301, SS321
    5BearingPTFE for rubber seat, SS316 for metal seat
    6BearingPTFE for rubber seat, SS316 for metal seat
    7O-RingSame as rubber seat, Graphite for metal seat
    8Hex ScrewSS304, SS316
    9SeatNBR, EPDM, FPM, Metal seat
    10Eye BoltSS304, SS316
    SIZEDRubber seatMetal seatWT(kg)
    DNINCHPN10PN16PN25Class150D1D2LD1D2L
    502"1091091091046646435646602
    652 1/2"1291291291238160467360673
    803"1441441441369575648875734
    1004"164164164174118976410897736
    1255"19419419619614612270132122868
    1506"220220226222171147761601479813
    2008"2752752862792281998921019812724
    25010"33033034333926624411426624914635
    30012"38038640340931229511431030018148
    35014"44044646045036234012735534018478
    40016"491494517514406390140405390191106
    45018"541558567549450440152455440203135
    50020"596620627606505490152505490219165
    60024"698737734717624590178605590222260
    70028"813807836831700680229700675305360
    80032"920914945939800776241800776305540
    90036"1020101410451047910878241903878368620
    100040"11271131115811621055103030010551030432880
    120048"13441344 138412051180350120511805241380
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      PRIVATE POLICY  

    Manufacture: ABC VALVE WUXI CO.,LTD.

    Add: U Valley Industrial Park, 58 Jinghong Road, Xibei Town,
    Xishan District, Wuxi, Jiangsu, China
    Zip Code: 214195
    Tel: +86-510-88786886
    Email: info@abcvalve.com
    Web: www.abcvalve.com

    Designed by: ABC CORPORATION

    Add: Rockwood Road, Wilmington new Castle DE 19802, USA

    Sales Company in Singapore: ABC VALVE PTE. LTD.

    Add: 10 ANSON ROAD #13-15 INTERNATIONAL PLAZA
    Email: sg@abcvalve.com

     

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