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check valve

American

noun

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

check valve British

noun

Also called: nonreturn valve. a valve that closes by fluid pressure to prevent return flow

"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

Etymology

Origin of check valve

First recorded in 1875–80

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The check valve the previous owner had installed broke during Hurricane Henri, in late August.

From Seattle Times • Oct. 13, 2021

On any modified motor, make sure to check valve adjustment at least every eight hours.

From Time Magazine Archive

You've got to go through and check valve seats and guides, and replace valves and springs.

From Time Magazine Archive

Installation is straightforward; the body is high-impact ABS plastic, and the built-in check valve is a Johnson exclusive.

From Time Magazine Archive

Brake pipe air entering chamber "a" will lift the check valve 15, and charge chamber "Y" to brake pipe pressure.

From The Traveling Engineers' Association To Improve The Locomotive Engine Service of American Railroads by Anonymous

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023