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 closed abruptly. This silent check valve helps provide quieter operation for your sump pump system. CLEAR VALVE BODY: The check valve has a transparent body that allows visibility of water flow. This makes it easy to visually confirm that water is moving through the pipe, check for blockages, and verify 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 designed to prevent pumped water from flowing back into the sump basin. By stopping backflow, it helps reduce the frequency of pump cycles, which may contribute to extended pump life. ABOUT US: We offer sump pump systems designed to help manage water removal and reduce the risk of basement flooding. 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: Light reflection and differences in display screens may cause slight variations between the color shown in the image and the actual product. Measurement may vary by up to +/- 1-3 cm.