NIBCO 3/4" Coupling. It is made of FlowGuard Gold CPVC and is ideally suited for hot and cold water pressure distribution systems in residential and commercial applications. The CPVC-CTS coupling features female socket connections and is used to connect two lengths of CPVC-CTS piping. It is corrosion resistant, Lead-Free and underground rated. It has a maximum working pressure of 400 psi and a maximum working temperature of 180 degrees Fahrenheit. It is backed by a 5-year limited warranty. Please refer to NIBCO technical data sheets and catalogs for engineering and installation information.