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, discharge pipes are clear, and 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 2-inch Schedule 40 pipe. KEEP WATER OUT: The check valve is engineered to prevent backflow of pumped water into the sump basin. By stopping reverse flow, it helps reduce pump cycling, which may contribute to extended pump life. ABOUT US: We offer sump pump systems designed to help manage water removal and protect against potential water damage. Our product line includes Smart Sump Pump Systems that monitor operational data and help ensure proper pump function. Color: As shown Material: ABS + Metal Package Contents: 1 x 2-Inch Check Valve Note: Only the listed items are included. Other products are not included. Note: Lighting and display differences may cause slight variations between the color shown in images and the actual product. Measurement may vary by +/- 1-3 cm.