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Check valve are generally used in drip irrigation emitters and irrigation sprinklers. Composition disc valves are ideal for applications involving gritty liquids. A clapper valve is a type of check valve which is used in fire fighting. Poppet check valves find use in “macro” flow applications. Arterial check valves are used in applications requiring centrifugal pumps to prevent retrograde flow along the arterial line. Check Valves are mechanical valves that permit gases and liquids to flow in only one direction, preventing process flow from reversing. They are classified as one-way directional valves. Fluid flow in the desired direction opens the valve, while backflow forces the valve closed. The mechanics of check valve operation are not complicated. Most check valves contain a ball that sits freely above the seat, which has only one through hole. The ball has a slightly larger diameter than that of the through hole. When the pressure behind the seat exceeds that above the ball, liquid is allowed to flow through the valve. But once the pressure above the ball exceeds the pressure below the seat, the ball returns to rest in the seat, forming a seal that prevents backflow.
We are one of the biggest Check Valves manufacturer in China. We supplies :Cast Steel Check Valve, Forged Steel Check Valve, Flanged End Check Valve ,We can manufacture and supply Check Valves according to your requirements, please feel free to contact us !
NO Product name Download
  №- CS-Check Cast Steel Check Valve  
     №- 50001  Class 150~1500 Swing Check Valve No Download
     №- 50002  Class 600~2500 Pressure Sealing Swing Check Valve No Download
     №- 50003  Class 150~300 Butterfly Swing Check Valve No Download
  №- FS-Check Forged Steel Check Valve  
     №- 50004  Piston Check Valve 800Lb No Download
     №- 50005  Piston Check Valve 900Lb~1500Lb No Download
     №- 50006  Swing Check Valve 800Lb,900Lb~1500Lb No Download
     №- 50007  Pressure-seal Swing Check Valve 900Lb~2500Lb No Download
     №- 50008  Pressure-seal Piston Check Valve 90Lb~2500Lb No Download
  №- FS-Ypattern Forged Steel Y-Pattern Valve  
     №- 50009  Y-Pattern Piston Check Valve 800Lb No Download
  №- FS-Flanged Forged Steel Integral Flanged End Valve  
     №- 50010  Flanged End Check Valve 150Lb~600Lb No Download
     №- 50011  Forged Steel Flange End Check Valve 900~1500Lb No Download
     №- 50012  Flanged End Pressure-seal Piston Check Valve 900Lb~2500Lb No Download
  №- WC-Check Check Valve  
     №- 20012  H44X(SFCV) rubber disc check valve No Download
     №- 20013  DRVZ silence check valve No Download
     №- 20014  SCVX silence check valve No Download
     №- 20015  CVWR wafer type silence check valve No Download
     №- 20016  HQ41X sliding ball type check valve No Download
     №- 20017  HQ11\45X micro-rseistance ball type check valve No Download
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