check valve

noun
|Updated on: 14 Jun 2018

Definition of check valve

: a valve that permits flow in one direction only

Recent Examples of check valve from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'check valve.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of check valve

circa 1877

in the meaning defined above

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