The CPVC-CTS union is used for the repair of a line and features a female socket x copper male NPT threaded connection that allows for CPVC-CTS tube to be connected to copper piping. Please refer to NIBCO technical data sheets and catalogs for engineering and installation information. Chlorinated Polyvinyl Chloride (CPVC) has proven to be an excellent material for hot corrosive liquids, hot and cold water distribution, and similar applications above the temperature range of PVC. CPVC will not rust, pit, scale or corrode. CPVC fittings are easy to install and are joined by solvent cementing or threading. NIBCO plastic fittings are backed by a 5-year limited warranty. Because of its longstanding reputation for innovation and precision in design and manufacturing, NIBCO is the preferred brand in the industry. FlowGuard Gold is a registered trademark of The Lubrizol Corporation.