Aqua Dial Control Valve External Leak

Softener leaks water from around the control valve 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

Failed O-rings between Aqua Dial valve and tank, Cracked valve body, Loose plumbing connections, Damaged bypass O-rings

How to Fix / Troubleshooting

Safety first: Turn off the inlet valve and place the unit in bypass. Depressurise by opening a downstream tap. Disconnect power.

  • Identify leak source: Dry the area and observe where water reappears: at the tank/valve joint, plumbing unions, or bypass.
  • Tighten fittings: Gently tighten any loose unions or clips. Do not overtighten plastic fittings.
  • Inspect O-rings: If leaking at the tank/valve interface or bypass, remove the valve or bypass assembly and inspect O-rings for cuts or flattening. Replace with Aqua Dial O-ring kits.
  • Check for cracks: If the valve body or bypass housing is cracked, replace the entire assembly.
  • Repressurise slowly: After reassembly, open valves slowly while checking for leaks.
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Repair Difficulty

Medium 3/5

Required Part

Valve-to-Tank O-Ring Set / Bypass O-Rings
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