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Customer Questions and Answers for Vacuum Break Assembly by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18049857
Manufacturer Part Number: WPW10190514

This vacuum break assembly is the dishwasher's anti-siphon device in the fill system. It creates an air gap that prevents dirty water from backflowing into the water supply, helping protect your plumbing and maintain proper fill performance.

  • Provides an air gap in the fill path to stop siphoning/backflow from the tub into the household supply
  • Helps the dishwasher fill correctly without unintended siphon action
  • Common failure symptoms: leaks from the side of the cabinet during fill, water returning to the tub after a drain, or a cracked/brittle housing
What's included: 1 vacuum break assembly Install notes:
  • Disconnect power and turn off the water supply before servicing
  • Remove access panels to reach the vacuum break (location varies by model)
  • Transfer hoses and clamps to the new assembly in the same orientation; ensure all seals seat fully
  • Restore water and power, then run a short cycle to check for leaks
Also known as: vacuum breaker, anti-siphon valve/air gap

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$47.95
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For Whirlpool Vacuum Break Assembly (Part Number: OEM18049857)

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