The Apollo ExpansionPEX 1/2 in. Brass PEX Barb x 3/4 in. Garden Hose Thread No-Kink Quarter-Turn Hose Bibb is an easy way to install a new or replacement hose bibb. The valve is designed for potable water and hydronic applications where a shut-off is needed. Apollo ExpansionPEX hose bibbs 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 cold expansion piping system comprised of 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: Larger internal diameter of Apollo ExpansionPEX fittings results in a 25% greater flow rate within the system Constructed of lead free dezincification resistant (DZR) brass for superior reliability and strength Cold-expansion tool (sold separately) is required for installation Meets or exceeds ASTM F1960 standard Meets UPC, IPC, and cUPC standard requirements Must secured in place using Apollo ExpansionPEX sleeves or other PEX-A expansion sleeves/rings (all sold separately) NSF listed PEX-A barb x male garden hose thread connection for PEX-A plumbing systems Go/no-go gauges are never required To ensure secure connections every time, fittings cannot be dry fit Maximum working pressure of 200 psi and maximum temperature of 200 degree F Item is not compatible with PEXb pipe, crimp-style (ASTM 1807) or pinch clamp (ASTM F2098) piping systems