What is the role of cleanouts in indirect waste systems?

The role of cleanouts in indirect waste systems is primarily to provide access for maintenance and clearing stoppages. Cleanouts are designed openings in a plumbing system that allow plumbers or maintenance personnel to remove blockages and clean the pipes, ensuring that the waste flows freely. This is crucial in maintaining the health and efficiency of the drainage system, as blockages can lead to backups, leaks, and other plumbing issues.

In indirect waste systems specifically, cleanouts are strategically placed to facilitate easy access to pipes that may not be readily accessible otherwise. By having cleanouts installed, it makes the system more manageable and helps to prolong the life of the plumbing system through regular maintenance.

The other options, while relevant to general plumbing concepts, do not accurately describe the specific function of cleanouts. For instance, cleanouts do not regulate water flow, enhance system pressure, or directly connect additional fixtures, as their primary purpose is aimed at maintenance and accessibility within the waste drainage processes.