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 mega moon rocket’s still doing very well. We have one check valve — that is literally the only real issue we’ve seen so far,” said Tom Whitmeyer, deputy associate administrator for NASA’s exploration systems development division.

From Washington Post

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

From Seattle Times

The check valve was made of titanium.

From BBC

Even if her fabulous vibrato is mostly kept in check, “Valve Bone Woe” is successful, ear-catching and ear-caressing.

From Washington Times

In order to understand the exact scenario, and characterize the flammability of the check valve’s titanium internal components and NTO, as well as other material used within the system, the accident investigation team performed a series of tests at SpaceX’s rocket development facility in McGregor, Texas.

From Salon