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About: Pressure-balanced valve     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:WikicatPlumbingValves, within Data Space : dbpedia.org associated with source document(s)

Type: yago:BodyPart105220461yago:Part109385911yago:PhysicalEntity100001930yago:Structure105225602yago:Thing100002452yago:Valve105395286yago:WikicatPlumbingValves New Facet based on Instances of this Class

A pressure-balanced valve provides water at nearly constant temperature to a shower or bathtub, despite pressure fluctuations in either the hot or cold supply lines. If, for example, someone flushes a toilet while the shower is in use, the fixture suddenly draws a significant amount of cold water from the common supply line, causing a pressure drop. In the absence of a compensating mechanism, the relatively higher pressure in the hot water supply line will cause the shower temperature to rise just as suddenly, possibly reaching an uncomfortable or even dangerous level. Conversely, if someone opens a hot water faucet elsewhere, the relatively higher pressure in the cold water supply line will cause the shower temperature to drop suddenly. This is described in US patent 3674048.