HVLP Conversion

BobV

Member
I understand, High Volume Low Pressure,I have a compressor that can produce 125 lb psi all day long, how will I regulate the air,larger hose for the volume?. What does it take to get this done? Thanks in advance to any and suggestions.
 
you can run standard 3/8 inch air lines for a typical hvlp automotive style gun. use an in line filter and moisture trap at the supply end of your air hose. then run a gun regulator right at the spray gun. your manual that came with your spray gun should have the cfm it requires. be sure your air line has never had a line oiler on it.
 
Your compressor has to hold the psi at whatever your gun requires. It does that by CFM (cu ft/min). Even small compressors will give 125 psi, just not for long. I have two compressors. The one I use for painting is a single stage and puts out 17 cfm at 90 psi. Will work with any spray gun on the market, borderline with impact tools etc. The other is a 2 stage, puts out 24 CFM at 150 psi, ok for impact tools, sanders, etc, but is very marginal for sand blasting. The pipes attached to my compressors are 3/4" diameter with 1/2 inch drops. The regulator and water trap on the wall is 100+ pipe feet from the compressor, followed by a 3/8 inch hose attached and water trap bulb and gauge on the gun. Use the regulator on the wall to feed the gauge on the gun to account for any pressure drop in the hose.
 

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