Our SELEMIX® technical experts have prepared some practical tips to help the professional painter to achieve the best spraying results when using air-assisted airless spraying equipment.
The basic principle of air-assisted airless spray is that the paint is atomized by pumping it at pressure through a narrow orifice (the tip of the gun).
Pressures are, however, reduced as the gun has an air cap which gives a secondary atomization and breaks up and tailing that can occur.
It should not be underestimated that the spray gun is more complex than an airless gun. It has both a fluid line and an airline going into it.
Typical spray pressures for air-assisted airless spray are 800-1500 psi/ 55-100 Bar. Key benefits of spraying at a lower pressure are a greater control and a better quality of finish.
To gain the best outcome, we recommend the following steps:
For the best results we recommend all painters that you should spray from a greater distance, when compared to conventional spraying. We suggest a distance of approximately 50cm. In addition, in between passes you should not turn your trigger off as this will lead to fouling at the tip of the spray gun.
Following these simple practices should help the professional painter achieve very good results when using Selemix products with air-assisted airless spraying equipment.