KBI PlatinumXCELL CPVC CTS Water Hammer Arrester Fitting Conforms to ASTM D 2846 specification for Chlorinated Poly (Vinyl Chloride) (CPVC) plastic hot and cold water distribution systems Rated for hot and cold water plumbing systems to 100 psi @ 180F EPDM high quality washer insures sure seal Meets/exceeds ASTM and ANSI standards, as well as NSF standards Made in the USA