Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. Check valves are often part of common household items. Although they are available in a wide range of sizes and costs, check valves generally are very small, simple, or inexpensive. Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem. The bodies (external shells) of most check valves are made of plastic or metal.
Nominal Diameter: DN50 - DN600
Nominal Pressure: 150LB - 2500LB
Working Temperature：-196℃ - +560℃
Material: Carbon Steel, Stainless Steel, Bronze, Forged Steel, LCC/LCB, CF8/CFM8
Driving Means: Handle, Electric Actuator
End Connection: RF, RTJ, BW
Resilient Buna-N or EPDM Seat
Upper and lower PTFE thrust washers
Wafer body style fit between FF or RF flanges
Torsion springs assist valve closure, preventing flow reversal
Thrust washer reduce friction and wear of valve plate hinges
Dual plate valves give maximum strength with minimum opening time
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