Raybend, "Silent" Sump Pump Threaded Check Valve, 1-1/2" NPT to 1-1/2" Pipe

Engineered to allow for maximum flow from your sump pump. Raybend’s “full-flow” check valves prevent the water that remains in the sump discharge pipe from falling back into the sump pit. This avoids pumping the same water twice, extending the life of your pump. Features:: A unique spring loaded flapper eliminates the nuisance water hammer noise of standard check valves; Durable ABS Construction for years of Service and Reliability.; 1-1/2” Buna-N rubber coupling for connecting the check valve with 1-1/2” sump pump discharge pipes; ALL STAINLESS STEEL Hose Clamps to prevent rust and corrosion for a secure, leakproof connection.