The Homewerks Worldwide PVC Check Valve is durable， reliable and worry-free. Check valves prevent water from flowing back into a pump with a rubber flapper， helping your sewage system to perform at its best. It contains a durable stainless-steel spring with an O-ring seal. Cannot be used with compressed air.
Constructed of heavy-duty PVC
Fits both Sch. 40 and 80 pipe
Prevents siphoning of materials back into the main lines
Not for use with compresses air
Corrosion resistant
Can be used underground
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