back siphonage


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back siphonage

[′bak ¦sī·fən·ij]
(civil engineering)
The flowing back of used, contaminated, or polluted water from a plumbing fixture or vessel into the pipe which feeds it; caused by reduced pressure in the pipe.

back siphonage

The flowing back of used, contaminated, or polluted water from a plumbing fixture or vessel into the pipe which feeds it; due to reduced pressure in the pipe.