Spray pattern defects – spray jet curved on one side
A spray jet that is curved on one side can significantly impair the painting quality and lead to uneven results. This problem often occurs due to dirt in the air nozzle. In this article, we explain the causes and provide practical tips for how to fix it.
What does a one-sided curved spray jet mean?
If the spray jet is curved on one side, the paint application will be uneven because the amount of air is distributed differently at the two horns of the spray gun. This leads to a distorted spray pattern and can negatively affect the painting result.
Possible causes
- Horn boreholes contaminated on one side: the air flows unevenly out of the two horns because one side is blocked.
- Dirty front bores: Additional air flows to the open horn bores, which changes the air distribution on one side and distorts the spray jet.
Remedy
- Clean the air nozzle carefully with a suitable cleaning tool.
- If the dirt cannot be removed, replace the entire nozzle set.
Frequently asked questions
Question: Why is the spray pattern curved on one side?
Answer: A spray pattern that is curved on one side is usually caused by dirty horn holes or frontal holes. This leads to uneven air distribution and impairs the atomisation of the material.
Question: How can a spray pattern that is curved on one side be rectified?
Answer: Carefully clean the air cap with a suitable cleaning tool. If necessary, replace the entire nozzle set for best results.
For more tips and instructions on spray pattern issues, check out our daily blog series.
