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    Non-Surge Check Valves

    Features

    Non-Surge Check Valve closes automatically in case of prevent mediums back-flow.
    The Non-Surge Check Valve allows flow when inlet pressure in higher than the outlet pressure.
    The valve has the principal of slow-open, quick-close and slow-close into one to prevent water hammering when the pump starts or closes.
    Non-Surge Check Valve opens and closes at controlled speed to ensure smooth flow.
    Used on the pump outlet of a water supply system to prevent mediums back-flow, water hammer and water shock. It has three functions as an electric valve, check valve and water hammer remover. It is capable of improving the safety and reliability of the water supply system effectively through integrating the technical principle of slow-open, speed valve, slow-close, and removing water hammer and preventing of both pump-starting and pump-stopping water hammer. The gate can carry out open-close automatically upon the operation rules of the water pump just by operating the pump to open or close electrically. Hydraulic Check Valves features by the big flow and small pressure loss, reliable sealing performance, easy installation, debugging and maintenance and long duration.

    Supplier: Saitai Valve, China
    Manufacturer: Shop in Shanghai Qingpu Industrial Park

    Non-Surge Check Valves
    Non-Surge Check Valves

    DN 450 Diaphragm type valve
    DN 500 piston type valve
    Notes:
    1. Needle Valve
    2. Check Valve
    3. Small Ball Valve

    Technical Parameters

    Nominal Pressure: 1.0, 1.6, 2.5MPa
    Shell test pressure: 1.5, 2.4, 3.75MPa
    Sealed test pressure : 1.1, 1.76, 2.75MPa
    Suitable temperature: 80
    Suitable medium: water, Sewage

    Materials

    Materials: Non-Surge Check Valves
    Serial No. Part Material
    1 Body Cast Iron (GG25, HT200) / Ductile Iron (GG40, QT)
    2 Seat 2Cr13 / SS 304 / SS 316
    3 Stem 2Cr13 / SS 304 / SS 316
    4 O-ring washer Cast Iron
    5 O-ring NBR
    6 O-ring NBR
    7 Disc Cast Iron (GG25, HT200) / Ductile Iron (GG40, QT)
    8 Diaphragm Rubber
    9 Diaphragm washer Cast Iron (GG25, HT200) / Ductile Iron (GG40, QT)
    10 Nut Bronze
    11 Spring Spring steel
    12 Cover Cast Iron (GG25, HT200) / Ductile Iron (GG40, QT)
    13 Ball valve Bronze
    14 Ball valve Bronze
    15 Pressure show  
    16 Hang ring Steel
    17 Pilot socket Pilot socket
    18 Single way valve Bronze
    19 Needle valve Bronze
    20 Stud Steel
    21 Nut Steel

    Dimensions

    DNmm 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800
    L 180 180 180 203 203 235 285 360 400 455 585 650 800 860 915 980 1075 1230 1300 1450
    PN10 D 105 115 135 145 160 180 195 215 245 280 335 390 440 500 565 615 670 780 895 1010
    D1 75 85 100 110 125 145 160 180 210 240 295 350 400 460 515 565 620 725 840 950
    PN16 D 105 115 135 145 160 180 195 215 245 280 335 405 460 520 580 640 705 840 910 1020
    D1 75 85 100 110 125 145 160 180 210 240 295 355 410 470 525 585 650 770 840 950
    PN25 D 105 110 135 145 160 180 195 230 270 300 360 425 485 550 610 660 730 840 955 1070
    D1 75 85 100 110 125 145 160 190 220 250 310 370 430 490 550 600 660 770 875 990
    H 172 172 172 265 265 310 350 460 520 570 695 780 905 1025 1080 1030 1135 1270 1460 1640
    H1 106 106 106 210 210 215 245 305 365 415 510 560 658 696 735 610 665 725 865 925

    Typical Installation

    Typical Installation of Non-Surge Check Valves

    Non-Surge Check Valves Related Products

    Next:Rate-of-Flow Control Valves

    Catalog:Automatic Control Valves

    Above:Pressure Reducing Control Valves