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Customer Questions and Answers for Vacuum Break Valve (Backflow Preventer) by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18047058
Manufacturer Part Number: WPW10140918

This vacuum break valve (also called a vacuum breaker or anti-siphon valve) prevents dirty water from being drawn back into the supply when flow stops, protecting your water supply and helping maintain proper fill and drain performance.

  • Breaks siphon/backflow after fill or drain cycles to prevent contamination
  • Helps maintain correct water levels and consistent filling
  • Common symptoms of a failed valve: leaks at the valve/hoses, unintended draining or backfilling, intermittent or slow fill, gurgling noises
  • Restores the proper water flow path when replaced
What's included: One vacuum break valve. Install notes:
  • Disconnect power and shut off the water supply before servicing
  • Place a towel or tray to catch residual water when removing hoses
  • Note hose orientation and transfer existing fittings/clamps as needed
  • Restore water/power and run a test cycle; check carefully for leaks

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Questions & Answers

For Whirlpool Vacuum Break Valve (Backflow Preventer) (Part Number: OEM18047058)

1 Answer

Minnie, The filters are not available as a separate part and would have to get the valve.

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1 Answer

Hello Ricky. It sounds like the unit is siphoning out the water in the unit. Check and make sure there is only 6" of drain hose in the drain pipe. Also, make sure the drain pipe is 36" off the floor in height. You will need to check and make sure the drain hose has an air gap going into the drain pipe. If it is air tight, it will siphon.

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1 Answer

Hello Christine. Check and make sure the screen for the hot water is not clogged. If not, and there is power to the hot valve, you will need to order and replace the water valve on the unit.

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1 Answer

Mike, You will want to pull the hose off the cold water side and check to make sure that the water valve is not clogged with dirt or debris. If it is then clean out the obstruction and test the cold water fill. If it still does not fill then replace the water valve.

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1 Answer

Hello James. Look and see if your model number has 2 pressure switches on it. If so, this is normal operation and there is nothing you can do to correct the issue.

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1 Answer

Hello Pam. If you unplug the machine and the water continues to come in, you will need to replace the water valve WPW10140918. If you can disconnect the power and stop the water, you may have a bad pressure switch W10339251. Hope this helps.

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