CPVC piping systems are used for a wide range of jobs. Copper tube size (CTS) CPVC pipe is designed for use in hot and cold potable water distribution systems. It can be used for residential applications, hotels and light commercial buildings. CTS pipe is very durable and can be used for applications up to 180 degrees Fahrenheit. Larger diameter schedule 80 CPVC piping systems can be used for applications up to 200 degrees Fahrenheit. CPVC pipe is specially formulated to handle more corrosive materials and withstand higher internal pressure.