What type of PVC pipe is specifically designed to handle higher temperatures, often used in hot water systems?

The type of PVC pipe specifically designed to handle higher temperatures, particularly in applications like hot water systems, is CPVC (Chlorinated Polyvinyl Chloride). CPVC is a thermoplastic that has been treated to enhance its thermal and chemical resistance compared to regular PVC. As a result, CPVC can typically withstand temperatures up to about 200°F (93°C), making it suitable for hot water distribution and other applications where higher temperatures might be encountered.

The chlorination process increases the material's strength and thermal stability, allowing it to maintain structural integrity even under heat. This makes CPVC ideal for plumbing applications, including residential water systems that convey hot water.

In comparison, standard PVC is generally recommended only for cold water applications, while UPVC, which is unplasticized and more rigid, is often used in pressure pipes but still does not perform as well as CPVC at elevated temperatures. RC PVC involves the reinforcement of chlorinated PVC, but it is not specifically aimed at high-temperature applications. Thus, CPVC is the clear choice for handling the higher temperatures found in hot water systems.