This 1" brass check valve from Water Source helps keep your jet, submersible, and centrifugal pump systems primed by preventing water from back flowing when a pump shuts off. It's built out of solid brass to ensure a long lifespan and meet federal low lead regulations. Rated for up to 200 PSI, it also includes a poppet with Buna-N O-ring, a stem guide, and a wide channel for maximum flow. | Water Source 1" Brass Check Valve | Size 2"