siphonage


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siphonage

 [si´fon-ij]
the use of the siphon, as in gastric lavage or in draining the bladder.

si·phon·age

(sī'fŏn-ăj),
Emptying of the stomach or other cavity by means of a siphon.

back siphonage

A reversal of the normal flow of water or other liquid due to a negative-pressure gradient. Back siphonage in a water system may result in contamination, triggering a “boil order” (i.e., an order to boil water before drinking so as to kill potential contaminants).

si·phon·age

(sī'fŏn-ăj)
Emptying of the stomach or other cavity by means of a siphon.
References in periodicals archive ?
In this study, 10 cases who aspirated fuel oil and gasoline while transferring them from the reservoir to the bins through siphonage method were presented and the literature was reviewed.
The RPZ design features triple security to provide optimum protection against back pressure and back siphonage: two check valves and a discharge valve divide the unit into three chambers, each providing a separate pressure zone.
* When hydrostatic pressure inside the pipe is lower than pressure outside the pipe (i.e., atmospheric pressure), back siphonage occurs and vacuum breakers are appropriate backflow prevention devices.
They feature water triple security to provide optimum protection against back pressure and back siphonage: two check valves and a discharge valve divide the unit into three chambers, each providing a separate pressure zone.
If the consumer has a private water supply or even reuses some of the city water for other purposes, definite precautions should be taken to prevent any possible back siphonage induced by opening a large valve on a lower floor, especially when the city line has low pressure, thus allowing a submerged inlet or hose on an upper level to siphon polluted water into the lines.