What is the maximum allowable angle for a cleanout in a plumbing system?

A cleanout in a plumbing system is designed to allow for easy access to clean and maintain the drainage pipes. The maximum allowable angle for a cleanout fitting is critical for ensuring effective flow and minimizing the risk of blockages, as well as facilitating maintenance.

The maximum allowable angle of not more than 90 degrees is established to ensure that even at a right angle, waste can effectively flow through the system without significant resistance. If the angle were to exceed this, it could create a situation where the flow of waste could be hindered, making it more difficult to clear clogs and increasing the possibility of backups in the plumbing system.

This standard is essential for maintaining efficiency in wastewater transport and ensuring the longevity of the plumbing system. Proper installation of cleanouts at this angle ensures that they serve their purpose effectively in both residential and commercial plumbing systems.