Certikin Faulty Isolation Valves

Pump cannot be isolated properly; water continues to flow when valves are closed for service.

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.

Possible Causes

Worn Certikin ball valve seats, damaged valve spindle, debris preventing full closure

Safety: Be prepared for water spillage when working on valves. Depressurize the system first.

Operate valves fully: Move the handle from fully open to fully closed several times to dislodge debris.
Inspect internals: If possible, disassemble the Certikin isolation valve and clean or replace the internal ball and seals.
Replace valve: If the valve cannot fully shut off, replace it with a new Certikin‑approved isolation valve of the same size.

Medium 3/5

Certikin isolation ball valve

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