What is a waste tap an example of?

A waste tap is classified as a valve because it functions to control the flow of water or other fluids through a plumbing system. Specifically, a waste tap allows the user to open or close the passage, effectively controlling when liquid can escape from a container or plumbing fixture.

Valves, including waste taps, are designed to enable or restrict flow and are critical components in managing fluid dynamics in various systems. This includes applications like drainage and waste disposal, where precise control over fluid movement is necessary.