Paint Guns are "HVLP" which stands for High Volume Low Pressure! (sorry SW_Radial, just have to correct this) You don't need 150 psi, but you do need to be able to SUSTAIN 6-8 CFM! (cubic feet per minute) which is where the larger tank comes in. If you go to your local hardware store (TSC, HD, Lowes, etc.) and look at the compressors most of them now have a sticker on them with green, yellow, and red dots next to a picture of a tool (impact wrench, sander, air chisel, air ratchet, etc) and on most of the smaller ones (30 gal and less) an HVLP Paint gun is either in the red or on many, not even listed as the unit is just not large enough to consistently produce the required volume. Your compressor will turn on and keep running right past its duty cycle trying to keep up and nex thing you know its over heated and when you take it in for warranty, "There is a lot of overspray on this; It looks like you were using it to paint!..."
Laterz,
Gator
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