The repair of the HVLP/APR spray gun is a big headache. Especially for beginners. Please refer to the table below to quickly get to know and fix HVLP spray guns.
| Problem | Cause | Solution |
|---|---|---|
| 1. Air leakage around the handle | Damaged valve sealing | Replace these. As this set was sealed with glue, it’s hard to disassemble. You’d better contact the seller to dispose under warranty. |
 | Damaged valve needle | |
 | Damaged valve spring | |
| 2. Nozzle leakage | The material needle tightening screw is locked too tightly | Loose screws |
 | The paint is not cleaned and clogged with fluid nozzle | Check and clean |
| Needle spring is damaged or not assembled in place | Replace spring or adjusting properly place | |
| 3. Width patten unadjustable | The air distribution ring is not assembled correctly. | Check and reassembly |
 | Atomizing components clogged with paint | Clean |
| Damaged set of width adjusting | Check and replace | |
| 4. Fluttering/spiting spray | Fluid tip has not been properly tightened | Tighten fluid tip with a universal spanner |
 | Mixing air into paint passage | Tighten the fluid cup and check the sealing |
| Fluid needle sealing leaks paint | Tighten fluid needle screw or replace | |
5. Crescent  | The small holes on both sides of the atomization cap are clogged with dirt, resulting in uneven air output on both sides | Remove the dirty with special cleaning tools |
| 6. Heavy top and bottom | Air cap, fluid tip, air distributor ring incorrectly installed or jammed with dirty in a passage | Reassembly, clean, and tighten the atomizing cap |
 | Loose nozzle or damaged | Tighten or replace |
| Air cap hole defect | Replace | |
| 7. The center of the paint pattern too narrow | Too high air pressure or excessive airflow | Reducing the air pressure and adjusting the airflow with knob |
 | Material too thin | Regulate material viscosity |
Achieving the desired spraying finish requires proper maintenance and care. So do you have any ideas for your blooey spray gun? Hope this article can make your painting work easier.
For any problems you come across with HVLP/ APR spray gun, please leave us a comment.
