V4 04 Regulator repair kit A
Applicable for:
- AVA Master: P60, P70, P80, both Master 1.0 & Master 2.0
- Evolution: P60, P70, P80
Recommended for qualified technicians – Always consider a complete module kit*
This kit contains essential components to restore the function of the control piston (also known as the pressure regulator plunger) located in the top of the pump. The control piston senses water pressure and activates a spring-loaded mechanism that communicates with the electrical switch to start or stop the machine.
*We highly recommend considering a complete 5-Year Warranty and Repair Kit instead of this part. Regulator repair kit is intended for professional use and should be installed only after thoroughly checking all nearby components. This is especially recommended if the product has been exposed for cold temperatures or if the root cause of the issue is unclear. The warranty kit offers a more comprehensive solution and peace of mind for long-term use.
Here you can find our overview of Warranty & Repair kits.
Typical cause of failure
• Internal wear due to age or heavy use
• Dirt or limescale build-up causing the piston to stick
• Damage from frozen water left in the pump
• Deformation or leakage caused by excess pressure or misalignment
Failure symptoms – Part correlation
• The machine does not stop when the trigger is released
• The machine fails to start when water is flowing
• Noticeable delay before the machine reacts
• Possible external leak from the regulator area (often linked to frost damage)
Installation advice
Always prioritize safety, read our guide: Safety instructions – AVA of Norway
- Make sure you have concidered the alternative above.*
-
Follow the guide:
- Master guide: click here. Follow the repair guide up to step 15.
- Evolution guide: click here. Follow the repair guide up to step 13.
- Open the regulator housing.
- Clean the pump area thoroughly before disassembly.
-
Replace the faulty parts.
-
Ensure:
- All surfaces are clean.
- Everything is tightened to spec before completing the repair.
- Seals are lubricated lightly with silicone grease before reassembly.
- All parts are seated correctly and that the spring has the correct tension.
- that you have Inspected surrounding components for cracks or fatigue, especially after frost.
-
Ensure:
- Continue following the guide to finish reassembly.
Tools Needed for all AVA Pressure Washer Maintenance – AVA of Norway
Warranty and Self-Repair – The AVA Way
At AVA, we encourage repair – not throwaway culture. You’re free to open your machine, inspect it, and replace parts yourself without losing your warranty. That’s part of what makes owning an AVA product different.
We offer guides, spare parts and support so that you can keep your machine running for many years to come – whether it’s a simple nozzle, a carbon brush, or a full pump module.
Many parts are designed to be replaceable – just like they should be.
Visible signs of use or repair are welcomed – they mean the product is being cared for.
Learn more about our warranty: AVA Warranty Terms & Conditions
V4 04 Regulator repair kit A
Applicable for:
- AVA Master: P60, P70, P80, both Master 1.0 & Master 2.0
- Evolution: P60, P70, P80
Recommended for qualified technicians – Always consider a complete module kit*
This kit contains essential components to restore the function of the control piston (also known as the pressure regulator plunger) located in the top of the pump. The control piston senses water pressure and activates a spring-loaded mechanism that communicates with the electrical switch to start or stop the machine.
*We highly recommend considering a complete 5-Year Warranty and Repair Kit instead of this part. Regulator repair kit is intended for professional use and should be installed only after thoroughly checking all nearby components. This is especially recommended if the product has been exposed for cold temperatures or if the root cause of the issue is unclear. The warranty kit offers a more comprehensive solution and peace of mind for long-term use.
Here you can find our overview of Warranty & Repair kits.
Typical cause of failure
• Internal wear due to age or heavy use
• Dirt or limescale build-up causing the piston to stick
• Damage from frozen water left in the pump
• Deformation or leakage caused by excess pressure or misalignment
Failure symptoms – Part correlation
• The machine does not stop when the trigger is released
• The machine fails to start when water is flowing
• Noticeable delay before the machine reacts
• Possible external leak from the regulator area (often linked to frost damage)
Installation advice
Always prioritize safety, read our guide: Safety instructions – AVA of Norway
- Make sure you have concidered the alternative above.*
-
Follow the guide:
- Master guide: click here. Follow the repair guide up to step 15.
- Evolution guide: click here. Follow the repair guide up to step 13.
- Open the regulator housing.
- Clean the pump area thoroughly before disassembly.
-
Replace the faulty parts.
-
Ensure:
- All surfaces are clean.
- Everything is tightened to spec before completing the repair.
- Seals are lubricated lightly with silicone grease before reassembly.
- All parts are seated correctly and that the spring has the correct tension.
- that you have Inspected surrounding components for cracks or fatigue, especially after frost.
-
Ensure:
- Continue following the guide to finish reassembly.
Tools Needed for all AVA Pressure Washer Maintenance – AVA of Norway
Warranty and Self-Repair – The AVA Way
At AVA, we encourage repair – not throwaway culture. You’re free to open your machine, inspect it, and replace parts yourself without losing your warranty. That’s part of what makes owning an AVA product different.
We offer guides, spare parts and support so that you can keep your machine running for many years to come – whether it’s a simple nozzle, a carbon brush, or a full pump module.
Many parts are designed to be replaceable – just like they should be.
Visible signs of use or repair are welcomed – they mean the product is being cared for.
Learn more about our warranty: AVA Warranty Terms & Conditions
