Fleck Valve Head External Leak

Fleck softener leaks water from the top of the valve body or around the control head.

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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

Damaged valve O-rings, cracked valve body, loose tank adapter, improperly seated control head

How to Fix / Troubleshooting

Safety first: Close the inlet and outlet valves or place the unit in bypass. Depressurize by opening a nearby faucet before loosening the valve head.

  • Inspect tank-to-valve connection: Check that the Fleck control head is fully threaded onto the mineral tank and not cross-threaded. Tighten carefully by hand, then with a strap wrench if needed.
  • Replace O-ring: Remove the control head and inspect the large tank O-ring. Replace if flattened, cracked, or cut. Lubricate with silicone grease before reassembly.
  • Check for cracks: Examine the valve body for hairline cracks, especially if the system has frozen. Replace the valve body if cracked.
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Repair Difficulty

Hard 4/5

Required Part

Fleck Tank O-Ring
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