check valve

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noun

a valve permitting liquids or gases to flow in one direction only.

Origin of check valve

First recorded in 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for check valve

check valve


noun

a valve that closes by fluid pressure to prevent return flowAlso called: nonreturn valve
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012