check valve

American  

noun

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

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check valve British  

noun

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

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Etymology

Origin of check valve

First recorded in 1875–80

Example Sentences

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

From Seattle Times • Oct. 13, 2021

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

From Time Magazine Archive

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

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

In this pipe is found a combined strainer and check valve with a choke fitting and cut-out cock, which when open forms a connection between the brake pipe and the main reservoir.

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