Water and Wastewater Terms Beginning P

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pipe plug

 (1) A temporary plug placed in a wastewater collection pipe to stop a flow while repair work is being accomplished or other functions are performed. (2) In construction of a new wastewater collection system, service saddles are sometimes installed before a building or a building lateral is in existence. Under such circumstances, a plug will be placed in the off-lead of the saddle of a Y (wye). Also called a button or a stopper. Also see inflatable pipe stopper and mechanical plug.