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water hammer

the concussion and accompanying noise that result when a volume of water moving in a pipe suddenly stops or loses momentum.
Origin of water hammer
1795-1805 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for water hammer
  • If you are installing a dishwasher or a clothes washer, you must install a water hammer arrestor on the water lines.
  • Fill at the specified rate requirements to remove entrapped air and prevent water hammer surges.
  • Discuss water hammer and ways that it can be caused.
  • Care must be taken to minimize condensate backup, which can lower steam quality and increase the potential for water hammer.
  • The danger of creating line surges or water hammer while filling main lines and sprinkler laterals should be carefully explained.
  • Provide anti-surge components as needed to protect piping from surge and water hammer damage.
  • Close the main drain valve slowly to prevent water hammer and stop the water flow.
  • water hammer arrestors shall be provided at every branch to multiple fixtures and on every floor for both hot and cold water.
British Dictionary definitions for water hammer

water hammer

a sharp concussion produced when the flow of water in a pipe is suddenly blocked
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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