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

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

• 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