Poly Check Valve FNPT


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These 687 series check valves can be used for a wide range of fluid applications. Check valves are generally installed to prevent backflow. A check valve is basically a one-way valve, in which the flow can run freely one way, but if the flow turns, the valve will close to protect the piping, other valves, pumps etc.

High flow rate
Cracking pressure: 1/3 psi
Maximum pressure: 125 psi
Maximum temperature: 140°F

Additional information


1/2", 3/4", 1"


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