water hammer


: a concussion or sound of concussion of moving water against the sides of a containing pipe or vessel (such as a steam pipe)

Examples of water hammer in a Sentence

Recent Examples on the Web They’re all centered around one thing: a water hammer. Tim Folger, Discover Magazine, 26 June 2019 This phenomenon is called water hammer and occurs at appliances and right-angle bends in the plumbing. Joseph Truini, Popular Mechanics, 16 Feb. 2023 Pressure from surrounding steam can accelerate the water column, creating a liquid battering ram — a water hammer — that ruptures the pipe. Tim Folger, Discover Magazine, 26 June 2019 Manufacturers now make inexpensive, easy-to-install water hammer arrestors where these appliances connect to the water system. Washington Post, 21 Sep. 2020 Because it is being pumped to a higher point, the flow soon reverses, closing the delivery valve, and creating another water hammer that moves back up the inlet pipe, sucking the waste valve downwards into the open position again. Nithyanand Rao, Quartz India, 23 Oct. 2019 This closure of the valve causes pressure inside the pump to build up—the water hammer effect—and exceed that due to the water pressing down from outside on the delivery valve, causing that valve to open and let out some of the water. Nithyanand Rao, Quartz India, 23 Oct. 2019 The water hammer effect causes the pipe to displace from its equilibrium position. Sarah Harvey, Curbed, 17 June 2019 Aside from leak repairs, the agency is banking on two new water hammers to iron out future pressure drops and avoid boil advisories. Beau Evans, NOLA.com, 6 Jan. 2018 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'water hammer.' 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

1765, in the meaning defined above

Time Traveler
The first known use of water hammer was in 1765

Dictionary Entries Near water hammer

Cite this Entry

“Water hammer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/water%20hammer. Accessed 5 Dec. 2023.

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