Charlotte Pipe 1 In. Male Thread to CPVC Adapter is specifically designed to connect metal threaded fittings to CPVC pipes, making it i for cold water applications only. This adapter ensures a secure and reliable transition between different materials, providing a practical solution for plumbing needs where cold water flow is involved. For hot water systems, it is important to use transition unions or fittings that are specifically designed to handle higher temperatures to maintain safety and performance. Model Number: CTS 02109 1000HA