Does CPVC Piping Meet the Home Plumbing Code?

Jurisdictions

• CPVC pipes conform to ASTM International’s construction standards and are recognized by all plumbing codes, according to the Plastic Pipe and Fittings Association. CPVC pipes are generally used for hot and cold water distribution in many homes. Although all plumbing codes recognize CPVC for home use, check the local jurisdiction’s building and plumbing codes for authorized applications. Codes can vary slightly in different jurisdictions depending on factors such as the environment and air quality control standards.

Other Requirements

• Plastic pipes, including CPVC, are joined or welded using solvent cements. Along with the CVPC pipes, each jurisdiction has specifications regarding the cleaners, primers and cement solvents used to weld CPVC pipes. Generally, a purple, UV or black light solvent cement is required so home inspectors can examine the pipe’s welding. Some jurisdictions require environmentally friendly solvent cements.

Selection

• Carefully review local jurisdiction plumbing codes before installing CPVC pipe systems. Purchase a test pipe, joint and solvent to ensure you properly cut and weld the CVPC pipe before installing the entire system. CPVC pipes, attachments, primers and cement solvents are readily available at many home improvement and plumbing supply stores. For best results, use the CVPC pipe manufacturer's suggested products such as primers and solvent cements.

Warning

• Although the installation of plastic pipe systems is easier and more cost-effective than heavy metal pipes, mistakes can lead to leaks and other system problems. Specific solvents must be used with CPVC piping. Each type of plastic pipe and fitting requires a different welding application. Connecting CPVC pipes to other pipes requires a coupling joint to ensure solvents or lubricants don’t overlap. Purchasing the wrong materials can cause the pipes to melt over time, because the solvents break down the materials used to manufacture each type of plastic pipe. Use only CPVC solvent cement to weld CPVC pipes. If you decide to hire a professional, check references and certifications.