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backflow valve

noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for backflow valve
  • To prevent this, have a licensed plumber install an interior or exterior backflow valve.
  • To prevent this, have a qualified, licensed plumber install an interior or exterior backflow valve.
  • One way to prevent sewage from backing up at these locations is to install a backflow valve on a the lowest drain.
  • To help prevent this, install a backflow valve in the sewer line.
  • At a minimum, an automatic backflow valve should be installed to prevent sewage from backing up into the building during flooding.

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