butterfly valve


: a valve consisting of two semicircular clappers hinged to a cross rib that permits fluid flow in only one direction
: a damper or valve in a pipe consisting of a disk turning on a bisecting axis

Examples of butterfly valve in a Sentence

Recent Examples on the Web The pipe typically features a butterfly valve—which is designed to regulate the flow of liquids or air—that has a rotating disk set on an axis. Daisy Hernandez, Popular Mechanics, 1 Aug. 2019

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'butterfly valve.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1809, in the meaning defined at sense 1

Time Traveler
The first known use of butterfly valve was in 1809

Dictionary Entries Near butterfly valve

Cite this Entry

“Butterfly valve.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/butterfly%20valve. Accessed 21 Apr. 2024.

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