Back-siphonage
2 definitions

Back-siphonage

Back-siphonage means backflow caused by a negative pressure in the supply system.

Back-siphonage

The flowing back of used, contaminated, or polluted water from a plumbing fixture or vessel into a water supply pipe due to a pressure less than atmospheric in such pipe.

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About this term

Back-siphonage has been defined 2 different ways in documents like RVCA Regulation Terminology, 2009 Uniform Plumbing Code.

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