Tap water drainage pipeline
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During the installation of the process piping, I saw a tap water drainage pipe on the diagram. What is it used for, according to those of you who know?
I think there are two meanings: one is for draining waste from water supply pipes, that is, to remove waste from within the pipes, and it can also be used for releasing pressure during temporary maintenance. The second type is the drainage pipeline, which is used as an overflow pipeline.