The Apollo ExpansionPEX 3/4 in. Brass PEX-A Barb Ball Valve with Drain and mounting pad is simple to install and provides flow control through an anti-stick and smooth operating quarter turn lever handle. The quarter turn, single lever control allows for simple control of water flow in hydronic and potable water systems and the side vent allows for the expulsion of air or water for testing, repair or weatherization situations. Also capable of integration into hydronic heating systems, Apollo ExpansionPEX valves must be secured into place Apollo ExpansionPEX sleeves or comparable expansion-type sleeve or ring (all sold separately). The Apollo ExpansionPEX system is a comprehensive piping system comprised of lead free brass fittings, poly alloy fittings, manifolds, valves, fasteners, tools and tubing designed for implementation in water delivery systems, simple or complex. A cold-expansion tool (sold separately) is required for installation. Features: Constructed of lead free dezincification resistant (DZR) brass for superior reliability and strength Larger internal diameter of Apollo ExpansionPEX fittings results in a 25% greater flow rate within the system Designed exclusively for use within type a PEX piping systems Cold-expansion tool (sold separately) is required for installation Ideal for potable water and hydronic heating applications Meets UPC, IPC, and cUPC standard requirements and listed by IAPMO and listed to ASSE 1061/NSF 61 Barb x barb connection for PEX-A plumbing systems NSF listed Maximum working pressure of 200 psi and maximum temperature of 200 degree F Corrosion resistant for greater longevity Item is not compatible with PEXb pipe, crimp-style (ASTM 1807) or pinch clamp (ASTM F2098) piping systems