There are two kinds of HVLP guns, the turbine type that are sold as a system with a turbine, and the conventional type that use standard air line pressure. The standard guns work just fine with an air compressor but require a bit more air flow than a conventional gun. A 1.5-2.0 mm tip is a good size for general use. I can run mine with my 30 gallon 120 volt compressor just fine.
