1、Quiet Operation: Our sump pump check valve has a unique spring loaded flapper that helps eliminate the water hammer noise that standard check valves produce. This silent check valve can bring a quiet operation to your sump pump. 2、Clear Valve Body: This check valve will provide visibility to water movement. With the valve's clear body, it's easy to visually confirm that pumped contents are moving, the pipes are not clogged, and the pump in the basin is fully operational. 3、Keep Water Out: This check valve is designed to keep pumped contents within the discharge pipe from falling back into the sump basin. A fully functional check valve can increase pump life expectancy by preventing contents from being pumped twice. 4、Leakproof Performance: The silent sump pump check valve ensures a leakproof performance. Easy to install, the ABS material provides long lasting reliability for your sump pump system. 5、Easy Installation: The sump pump check valve effortlessly integrates into your existing plumbing setup, it ensures a snug fit, enjoy a easy installation process. It provides a more efficient and safer water management system for your home. Item Type: Sump Pump Check Valve Material: ABS 1 x Sump Pump Check Valve 1 x English Instruction Manual