Grünbeck Valve Head Seal Failure

Water softener leaks from the valve head housing

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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

Worn piston seals, Cracked valve body, Improper reassembly after service, Excessive inlet pressure

How to Fix / Troubleshooting

Safety: Disconnect power, close inlet and outlet valves, and relieve pressure before opening the valve head.

  • Locate leak: Dry the valve head and observe where water emerges during a brief pressurization.
  • Check for cracks: Inspect the plastic valve body for visible cracks. Replace the valve head if cracked.
  • Replace seals: If leakage occurs around the piston or rotating disc, replace the corresponding seal kit using original Grünbeck parts.
  • Verify pressure: Ensure that a functioning pressure reducing valve is installed if the mains pressure is high.
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Repair Difficulty

Hard 4/5

Required Part

Valve Head Seal Kit / Valve Head Assembly
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