HVLP Spray Guns for car and motorcycle paints 

HVLP Bodywork spray guns use a large volume of air and operate at low pressure. The advantage of spray painting  and low pressure spraying is to obtain better paint transfer on the substrate. A spray gun includes a product inlet (the bucket) and an air inlet (the compressed air pipe). The nozzles allow to spray and atomizes a mixture of air and paint.

On the other hand, old HPLV guns operate at high pressure: a large part of the paint bounces off the substrate and this results in sub-optimal product transfer rate and product waste.
Example: 1 Liter sprayed= 0.5 Liter on the substrate.

HVLP Spray guns for bodywork painting

They need a bigger compressor compared to conventional spray guns. In any case, a sufficient pressure and flow are required, to carry out properly the paint work and obtain a metallized, or gloss, optimal finish.

Since HVLP spray guns use a lot of air and less paint, a pressure that is too low, or that drops during the paint job, will cause real defects, or at least a poor finish quality: e.g. a dry film with a non-smooth surface, not perfectly stretched, mottled or with an orange peel effect. This can even results in colour differences when painting metallic or transparent shades.

Settings for painting primers

If you use an HVLP, you will need a little more air pressure, from 2.5 to 3.5 bar, when spraying various primers.

The primers are thicker, more viscous. In addition, the important thing for these preparatory steps is to spray a maximum of product quickly without worrying about a perfect finish!

Settings for paints and topcoats

Normally, one should refer to the instructions for the specific paint or clear coat that is used. Thus, you will find the recommended pressure measurements on each data sheet.

In general, from 2 to 3 bars. Warning! Everyone is free to adjust the thinning mixtures and air pressure according to his preference, style, and also depending on the temperature/season!