Swing Check Valves

Swing check valve is a type of butterfly check valve whose disc is movable to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to forward flow. The seat opening cross-section may be perpendicular to the centerline between the two ports or at an angle. Although swing check valves can come in various sizes, large check valves are often swing check valves. 

The check valve depends on gravity (weight of disc) and reverse flow. The pivot point of the swing check valve is outside the periphery of the disc, and the greater the head is, the greater the possibility is that the fluid will flow back through the valve before the disc can shut off. To effect complete shut off, the disc of a swing check valve can travel through a 90 angle arc to swing check valve seat. 

China check valve manufacturer Durlmark provides swing check valve having different dimensions: cast iron/alloy steel/ductile iron/stainless steel,RTJ/flanged, 2 inch/32 inch, 125LB/150LB/300L, etc. 

Other dimensions also can be available. If you have any questions, please feel free to contact us: info@durlmark.com.

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  1. 4 Inch 150LB Swing Check Valves,Cast Iron ASTM A126,Brass Seat,RF End

    Model No.: DM-Check-Valves-152
    AWW C508 Swing Check Valve Factory in China: AWW C508 Swing Check Valve, Cast Iron ASTM A126 Class B, DN100, Class PN20, Brass Seat, RF End.
  2. 4 Inch 150LB Alumium Bronze B148 C95800 Swing Check Valves,Flanged End

    Model No.: DM-Check-Valves-153
    B148 C95800 Swing Check Valve Manufacturer in China: Alumium Bronze ASTM B148 C95800 Swing Check Valve, 4IN, Class Rating 150LB, Flanged End.
  3. 6 Inch 300LB A216 Grade WCB Swing Check Valves,BW Ends

    Model No.: DM-Check-Valves-154
    A216 Grade WCB Swing Check Valves Manufacturer in China: A216 Grade WCB Swing Check Valves, Pressure CL300, 6IN, BW Ends, Gray Painting.
  4. 8 Inch 900LB ASTM A217 WC6 Swing Check Valves,BW Ends

    Model No.: DM-Check-Valves-155
    ASTM A217 WC6 Swing Check Valve Manufacturer in China: ASTM A217 WC6 Swing Check Valve, BS 1868, Size 8IN, Pressure CL900, Trim 8#, BW.
  5. 6 Inch 300LB ASTM A217 Gr.C5 Swing Check Valves

    Model No.: DM-Check-Valves-156
    ASTM A217 Gr.C5 Swing Check Valve Manufaturer in China: ASTM A217 Gr.C5 Swing Check Valve, Trim ASTM A182 Gr.F6, 6IN, CL300, Gray Painting Treatment.
  6. 28 Inch 600LB ASTM A217 C12A Swing Check Valves,BW Ends

    Model No.: DM-Check-Valves-157
    Swing Check Valve Manufaturer in China: Swing Check Valve, BW Ends, BS 1868, ASTM A217 C12A, Size 28IN, Pressure CL600, Electrical Power Station.
  7. 12 Inch 300LB ASTM A216 WCB Swing Check Valves,Flanged Ends

    Model No.: DM-Check-Valves-158
    A216 WCB Swing Check Valve Manufacturer in China: A216 WCB Swing Check Valve, 12IN, CL300, Flanged Ends, Gray Painting Treatment.
  8. 4 Inch 150LB 205 Duplex SS Check Valves,BS1868,FF 219mm

    Model No.: DM-Check-Valves-159
    China Duplex Stainless Steel Check Valve Manufacturer: 205 Duplex SS Check Valve, 150# (PN20), 4 Inch (DN100), BS1868 Standard, FF 219mm.
  9. 52 Inch 150LB ASTM B148 C95800 Check Valves

    Model No.: DM-Check-Valves-160
    China ASTM B148 C95800 Check Valve Manufacturer: ASTM B148 C95800 Check Valve, 52 Inch (DN1300), 150# (PN20), no surface treatment.
  10. 4 Inch 300LB WCB Check Valves,SCH 80,Grey Painting

    Model No.: DM-Check-Valves-161
    China WCB Check Valve Manufacturer: WCB Check Valve, WCB Valve Body, 4 Inch (DN100), 300# (PN50), Grey Painting Surface Treatment, BW Ends.
  11. 1 Inch ASTM A105 Check Valves,API 602,13%Cr Trim

    Model No.: DM-Check-Valves-162
    China ASTM A105 Check Valve Manufacturer: ASTM A105 Check Valve, ASTM A105 Valve Body, 13%Cr Trim, 1 Inch (DN25), API 602 Standard, No Surface Treatment.
  12. 3 Inch 2500LB ASTM A105N Swing Check Valves,API 6D,RTJ Ends

    Model No.: DM-Check-Valves-163
    China ASTM A105N Swing Check Valve Manfacturer: ASTM A105N Swing Check Valve, 3 Inch (DN80), 2500 LB (PN420), API 6D Standard, 8# Trim, RTJ Ends.

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