1. SpringLoaded Flap Mechanism: Innovative design effectively eliminates the water hammer noise commonly associated with standard check valves, providing quieter operation while maintaining backflow prevention for your plumbing system. 2. Transparent Valve Body: The ABS construction allows for visual monitoring of water flow and valve operation, enabling quick inspection without disassembly and helping you identify potential issues before they become serious problems. 3. 1.5Inch Compatibility: Precisely designed for 1.5inch piping systems commonly used with sump pumps and wastewater applications, delivering reliable backflow protection for residential and light commercial plumbing installations. 4. Durable ABS and Metal Construction: Crafted from quality ABS plastic combined with metal components to withstand pressure fluctuations and ensure extended longevity, even in demanding underground or basement environments.