On Wed, 26 Aug 2009 10:06:12 -0500, "Dan Kuechle"
wrote:

I thought that a high volume low pressure spray gun required air at about 60
cubic feet per minute and around 4 psi. This, I was told, could not be
obtained with a standard air compressor (no easy way to convert 4 cfm @ 60
psi to 60 cfm @ 4 psi). Now days I see lots of "hvlp" spray guns that say
they operate from a standard air compressor at 40 psi. Is this all
marketing hype and these 40 psi spray guns arn't true hvlp guns?

The reason for asking is that I just saw a unit from Chicago Freight that
comes with an air source (60 cfm @ 4 psi) at a price that would justify
"just trying it out". I know...Chicago Freight...but I've had remarkably
good luck with their products and theis prices can't be beat.

Dan


You're talking about a conversion gun. (DAGS HVLP conversion gun) They
are HVLP and they work by converting air at high pressure to a larger
amount of air at a lower pressure (which is what happens when you just
allow compressed air to expand again). But they do it in a controlled
fashion. If you already have a compressor setup, they are a
relatively inexpensive way to get to a HVLP setup. But I think the
general consensus is that the systems that use turbines to provide the
air work better.

Paul F.