Is Schedule 80 plastic pipe recommended for threading?

Schedule 80 plastic pipe is not typically recommended for threading. This type of pipe is designed for applications where increased pressure resistance is required, making it thicker than Schedule 40. However, its construction and material do not lend themselves well to being threaded. Most recommendations favor solvent welding instead of threading with plastic pipe, as threading can compromise the integrity of the material, leading to leaks or failures in the piping system.

Solvent welding creates a permanent bond that is more effective for maintaining the pressure and integrity of the piping joint. When working with plastic pipes, especially those categorized as Schedule 80, following industry standards for joint connections is essential to ensure reliability and safety in the system. Therefore, the consensus is that Schedule 80 plastic pipe should not be threaded, preferring other methods of joining such as adhesive or fittings designed for that purpose.