What is the design of a trap in plumbing systems described as?

The design of a trap in plumbing systems is best described as self-cleaning due to its function in maintaining a clean drainage system by preventing the buildup of debris and organic matter. A properly functioning trap captures and retains water, creating a seal that blocks sewer gases from entering a building while allowing wastewater to flow.

This self-cleaning characteristic helps prevent clogs, as it ensures that any solids or materials that could potentially cause blockages are flushed away with the flow of water. The design and material of traps facilitate this process, as they allow contaminants to wash away easily during regular usage of the plumbing system.

Furthermore, while traps can be accessed for cleaning, the intent of their design is that they operate efficiently without the need for frequent manual intervention. This makes self-cleaning a primary feature of the trap's design and function in plumbing systems.