The ApolloPEX 3/4 in. Brass PEX Barb x 3/4 in. Female Pipe Thread Adapter 90 degree Drop-Ear Elbow is simple to install and is designed for the installation of tub and shower outlets in most applications. ApolloPEX barb fittings are a key component of the most economical potable water piping systems. Also capable of integration into hydronic heating systems, ApolloPEX elbows 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: Most economical piping system available 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 FIP connection for PEX plumbing systems Maximum working pressure of 200 psi and maximum temperature of 200 degree F