The CheckMate UltraFlex valve from Red Valve, with its “Arc Notch” and optimized construction, opens quickly, allowing the pipeline and entire collection system to drain faster. Because it snaps open with far less 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. 412/279-0044; www.tideflex.com; Booth 2908.