The ApolloPEX 1/2 in. Chrome-Plated Brass PEX Barb x 3/8 in. Compression Quarter-Turn Straight Stop Valve is simple to install and provides flow control through a quarter-turn ball valve. Most commonly used at point of use fixtures, it allows for repair and maintenance of fixtures without the need to shut down flow control to the entire system. The 3/8 in. compression outlet provides the capability to install 3/8 in. O.D. tubing or 3/8 in. supply lines. It is designed for use on point of use fixtures such as dishwashers, toilets and faucets. ApolloPEX barb fittings are a key component of the most economical potable water piping systems. Also capable of integration into hydronic heating systems, ApolloPEX valves can be secured into place using copper crimps, stainless steel pinch clamps or stainless steel crimp sleeves (all sold separately). The ApolloPEX system is a comprehensive 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. Features: Constructed of chrome-plated lead free dezincification resistant (DZR) brass for superior reliability and strength Most economical piping system available Compatible with PEX pipe Meets UPC, IPC and cUPC standard Can secured in place using copper crimps, stainless steel pinch clamps or stainless steel crimp sleeves NSF listed Barb x compression connection for PEX plumbing systems Maximum working pressure of 200 psi and maximum temperature of 200 degree F