Numatic Leaking Solution Valve or Check Valve

Solution drips from spray jets even when pump is off and trigger is not pressed.

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 valve seat in wand, Debris preventing valve closure, Failed non-return (check) valve near pump outlet, Over-pressurised system

Safety first: Unplug the machine and empty the solution tank.

Flush system: Run clean water through the system to dislodge small particles.
Inspect wand valve: Disassemble the wand or handle valve and clean the seat and plunger. Remove any grit.
Check check-valve: Locate any inline non-return valve near the pump outlet. Replace if it allows flow when it should be closed.
Replace worn parts: If the valve seat is pitted or the plunger is damaged, replace the valve assembly.

Medium 3/5

Inline Check Valve / Wand Valve Assembly

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