What is a "cleanout" in plumbing?

A "cleanout" in plumbing is specifically designed as an access point for removing blockages in a drainage system. This access allows plumbers or maintenance personnel to easily reach and clear obstructions that can accumulate in the pipes, such as grease, debris, or tree roots, which can hinder the proper flow of wastewater. Cleanouts are strategically placed at various points in a plumbing system to facilitate maintenance and ensure that blockages can be addressed promptly, thus helping to maintain the efficiency and functionality of the drainage system.

In contrast, a junction where two pipes meet refers to a different concept in plumbing called a fitting, which is used to connect pipes but does not serve the purpose of accessing and clearing blockages. A type of plumbing fixture refers to items like sinks or toilets, which have distinct purposes related to water usage but do not specifically relate to the maintenance of drainage systems. A pipe designed to carry clean water is categorized as a supply line, which is not intended for drainage purposes and therefore does not relate to the concept of a cleanout.