What is a high volume low pressure spray gun
Just to be sure, HVLP stands for high volume and low pressure. So, according to their name, HVLP spray guns employ high volumes of air at a low pressure to atomize paint. Commonly, the air pressure is about 10 PSI or less. Due to this, the spray patterns receive soft and not overly diffused shapes. Also, this creates less overspray and, hence, uses paint more efficiently and reduces environmental risks.
Who may benefit from HVLP spray guns
HVLP spray guns are, on the whole, appropriate for the use with materials from low to medium viscosity. These can be primers, enamels, lacquers, stains, urethanes, acrylics, and different two-component paints. As such, high volume low-pressure spray guns have gained their popularity among many hobbyists. They suit perfectly for different touch-up jobs including automotive painting. Besides, this type of paint guns conforms to environmental regulations what also contributes to their promotion.
Types of HVLP air spray guns
As mentioned above, HVLP paint guns operate at a low pressure. This makes them transfer paint more efficiently to the surface, in comparison to pneumatic paint guns, for example. In addition to that, this helps to bring down paint consumption while keeping overspray and bounce back to the least amount possible.
However, not all HVLP spray guns are the same.
- Some of them work off an air compressor (if you need one, look up here) just as the conventional type of paint guns. But unlike them, these HVLP spray guns operate at lower pressure levels, only about 25 PSI. Although they do not offer as much efficiency as the next type, such HVLP spray guns are still able to considerably cut down expenses of paint. This especially concerns owners of air compressors.
- Others run off an air turbine. These HVLP spray guns are one of the most efficient due to the operation at a very low pressure (about 4 to 6 PSI).