check valve

noun

: a valve that permits flow in one direction only

Examples of check valve in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The plumber can check if there are fixable issues with the switch, check valve, and drainage pipe. — Brandee Gruener, Southern Living, 17 Oct. 2025 Install check valves to prevent floodwater from backing up your home's drains. — Maria Sabella, Better Homes & Gardens, 7 Aug. 2024 Sump pump damage can happen in the motor, check valve, switch, float, basin, discharge pipe, or casing. — Timothy Dale, The Spruce, 16 Apr. 2026 The second is a check valve that prevents the solution from traveling back up. — Bestreviews, Mercury News, 17 Feb. 2026 See All Example Sentences for check valve

Word History

First Known Use

circa 1877, in the meaning defined above

Time Traveler
The first known use of check valve was circa 1877

Rhymes for check valve

See All Rhymes for check valve

Browse Nearby Words

check up on
check valve
check viewer
See all Nearby Words

Cite this Entry

“Check valve.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/check%20valve. Accessed 8 Jul. 2026.

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