[Robust Connections]: The sump pump check valve boasts Buna-N couplings and 304L stainless steel clamps, ensuring a watertight seal and steadfast attachment to sump pump systems. This guarantees smooth water , prevents backflow, and optimizes overall pump efficiency. [Transparent Monitoring]: Equipped with transparent housing, this quiet check valve enables effortless visual inspection of its functionality, simplifying troubleshooting and maintenance tasks for swift resolution of any issues. [Compatible with 1-1/2inch Pipes]: Specifically designed to safeguard against backflow, this check valve accommodates 1-1/2inch 40 pipes commonly used in sump pump and sewage pump setups. Its compact design fits snugly within a 5-1/8inch space, ensuring compatibility with various installations. [Advanced Noiseless Check Valve]: Featuring a special spring-loaded flapper design, silent check valve effectively eliminates the water hammer noise typical of standard check valves. perfect for residential and commercial settings where noise reduction is essential. [Easy Installation & Replacement]: The quiet sump pump check valve comes with stainless steel clamps and Buna-N rubber couplings, facilitating seamless installation without the hassle, saving time and effort., Weight: 0.83885890691 Pounds, Manufacturer: Aisuoka