The CheckMate UltraFlex valve, with its patented Arc Notch and optimized construction, opens 40% sooner than other check valves, allowing the pipeline and the entire collection system to drain up to 40% faster. Because the valve “snaps” open with little head pressure, pipeline capacity is significantly increased, allowing a free flow of water during weather events and minimizing the chance for standing water to collect upstream. Click here for an animated demonstration of this product.