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. AWW C508 Swing Check Valves, ASTM A126 Class B, DN100, PN20, RF

    Model No.: LV 17 SCV 31
    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. Alumium Bronze B148 C95800 Swing Check Valves, 4IN, 150LB, Flanged End

    Model No.: LV 17 SCV 30
    B148 C95800 Swing Check Valve Manufacturer in China: Alumium Bronze ASTM B148 C95800 Swing Check Valve, 4IN, Class Rating 150LB, Flanged End.
  3. A216 Grade WCB Swing Check Valves, CL300, 6IN, BW Ends

    Model No.: LV 16 SCV 29
    A216 Grade WCB Swing Check Valves Manufacturer in China: A216 Grade WCB Swing Check Valves, Pressure CL300, 6IN, BW Ends, Gray Painting.
  4. ASTM A217 WC6 Swing Check Valves, BS 1868, 8IN, CL900

    Model No.: LV 16 SCV 28
    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. ASTM A217 Gr.C5 Swing Check Valves, 6IN, CL300, Trim ASTM A182 Gr.F6

    Model No.: LV 16 SCV 27
    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. Swing Check Valves, BS 1868, ASTM A217 C12A, 28IN, CL600, BW

    Model No.: LV 16 SCV 26
    Swing Check Valve Manufaturer in China: Swing Check Valve, BW Ends, BS 1868, ASTM A217 C12A, Size 28IN, Pressure CL600, Electrical Power Station.
  7. Swing Check Valves, ASTM A216 WCB, 12IN, CL300, Flanged Ends

    Model No.: LV 16 SCV 26
    A216 WCB Swing Check Valve Manufacturer in China: A216 WCB Swing Check Valve, 12IN, CL300, Flanged Ends, Gray Painting Treatment.
  8. 205 Duplex SS Check Valves, PN20, DN100, BS1868, 219mm

    Model No.: LV 16 SCV 25
    China Duplex Stainless Steel Check Valve Manufacturer: 205 Duplex SS Check Valve, 150# (PN20), 4 Inch (DN100), BS1868 Standard, FF 219mm.
  9. ASTM B148 C95800 Check Valves, DN1300, PN20

    Model No.: LV 16 SCV 24
    China ASTM B148 C95800 Check Valve Manufacturer: ASTM B148 C95800 Check Valve, 52 Inch (DN1300), 150# (PN20), no surface treatment.
  10. WCB Check Valves, DN100, PN50, Grey Painting

    Model No.: LV 16 SCV 23
    China WCB Check Valve Manufacturer: WCB Check Valve, WCB Valve Body, 4 Inch (DN100), 300# (PN50), Grey Painting Surface Treatment, BW Ends.
  11. ASTM A105 Check Valves, DN25, API 602

    Model No.: LV 16 SCV 22
    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. ASTM A105N Swing Check Valves, DN80, PN420, RTJ

    Model No.: LV 15 SCV 21
    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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