WaterBoss Bypass Valve Wear or Seizing

WaterBoss softener bypass valve is hard to turn or leaks around the stem

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Mineral buildup in bypass, Worn O-rings, Lack of operation over long periods, Cracked bypass body

How to Fix / Troubleshooting

Safety: Relieve water pressure before disassembling the bypass. Have towels ready.

  • Exercise the valve: Move the bypass slowly between service and bypass several times to loosen deposits.
  • Inspect for leaks: If water leaks around the stem or body, the O-rings may be worn or the body cracked.
  • Rebuild or replace: Install a bypass rebuild kit (O-rings and seals) if available for your WaterBoss model, or replace the entire bypass assembly if cracked.
  • Lubricate O-rings: Use only silicone-based lubricant approved for potable water on O-rings during reassembly.
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Repair Difficulty

Medium 3/5

Required Part

Bypass Valve Assembly
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