E20
George Non-Return Valve / Trigger Valve Not Sealing

Solution continues to drip from nozzle after releasing trigger

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Possible Causes

Worn trigger valve seat, Debris on valve seal, Faulty non-return valve in solution line, Excessive system pressure

How to Fix / Troubleshooting

Safety: Unplug and depressurize system.

  • Clean nozzle and valve: Remove the spray nozzle and trigger valve. Rinse thoroughly to remove grit or fibers.
  • Inspect valve seat: Check the trigger valve seat and seal for nicks or deformation. Replace if worn.
  • Check non-return valve: Locate any inline non-return valve in the solution hose and ensure it moves freely. Replace the non-return valve if stuck.
  • Reduce pressure: Avoid leaving the pump running continuously without spraying; cycle the trigger to relieve pressure.
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Repair Difficulty

Easy 2/5

Required Part

Trigger Valve Seat
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