The PEX 1 in. Brass PEX Barb Ball Valve is simple to install and provides flow control through an anti-stick and smooth operating quarter turn lever handle. PEX barb fittings are a key component of the most economical potable water piping systems. Also capable of integration into hydronic heating systems, PEX valves can be secured into place using copper crimps, stainless steel pinch clamps or stainless steel crimp sleeves (all sold separately). The PEX 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.