QUIET OPERATION: Our sump pump check valve features a spring-loaded flapper that reduces water hammer noise commonly produced by standard check valves. Water hammer occurs when discharged water forces the check valve flapper to close abruptly. This silent check valve helps provide quieter operation for your sump pump system. CLEAR VALVE BODY: This check valve has a transparent body that allows visual confirmation of water flow. It makes it easy to verify that water is moving through the pipe, ensure there are no blockages, and confirm the pump is functioning properly. INCLUSIONS: The silent sump pump check valve includes stainless steel clamps and Buna-N rubber couplings for quick and secure installation. The included components are designed to fit a 2-inch Schedule 40 pipe. KEEP WATER OUT: This check valve is engineered to prevent backflow by keeping pumped water from returning to the sump basin. By minimizing re-circulation, a properly functioning check valve can help extend the life of your sump pump. ABOUT US: We specialize in sump pump systems designed to help manage water removal and reduce the risk of basement flooding and water damage. Our product line includes Smart Sump Pump Systems that monitor performance and help ensure reliable operation. Color: As Shown Material: ABS + Metal Package Contents: 1 x 2-Inch Check Valve Note: Light reflection and different display settings may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.