CP 3/4″ Male Pipe Thread Inlet Air Stop Check Valve with 3/4″ Cam Lock Female Outlet. This air-actuated valve combines an air shut-off and check valve in one all-in-one design, delivering a faster, positive shut-off than traditional pinch valves. Made with glass-filled polypropylene material and a stainless-steel core, it features a standard Viton-type diaphragm and Xtreme Duty 23lb spring for high flow capacity with instant shut-off. Designed for high or low volume spraying, this Air Stop valve is built for durability and long-lasting performance on the boom.