Pressure on the Compressor regulator vs. at the gun

bigturkey · Samba Member Joined: June 06, 2004 Posts: 79

When using my cheapo compressor and HVLP gun, I have the pressure on the tank reading about 40-50 PSI, what pressure is that at the gun? Is that Right? The CFM is low and that's where it shoots the best

faster-laster · Posted: Thu Dec 02, 2004 2:51 pm Post subject:

my hvlp gun has a regulator inline right before the gun with a pressure gauge, so I can further adjust the pressure after it drops in the air line leading to the gun.
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62 Mouse Grey Deluxe
66 Westfalia SO-42 "Tigerbus"

Bklyn63 · Posted: Thu Dec 02, 2004 4:50 pm Post subject:

what ever the manufactures specs say then adjust it at that pressure at the regulator.

keifernet · Posted: Thu Dec 02, 2004 5:16 pm Post subject:

bigturkey · Samba Member Joined: June 06, 2004 Posts: 79

well, when I adjust the gun per the paint specs, it just splatters out and has horrible atomization. Is that a result of too little CFM?

Bklyn63 · Posted: Thu Dec 02, 2004 7:29 pm Post subject:

possibly we cant tell unless you find out what the minimum cfm is needed for the gun. and how much cfm your compressor produces usually at 90 psi.

kingd33 · Posted: Thu Dec 02, 2004 7:29 pm Post subject:

Might not be enough pressure, The paint store told me to crank my pressure up to 25 lbs. at the gun. It made a huge difference,of course my gun is a cheap one (siphon feed).The only problem I had at first was moisture from the tank being too small.

bigturkey · Samba Member Joined: June 06, 2004 Posts: 79

here's the deal, I want to know if investing the extra mone in a HVLP gun is worth it when my compressor can't match the specs. Will this gun still atomize better and give me a better finsih overall than my cheaper gun? Basically, if you were to compare a Sata NR2000 at 40 psi to my husky gun at 40psi with 6.5 cfm, the sata would still be more efficent and have better atomization?

BIG MAC · Posted: Thu Dec 02, 2004 11:51 pm Post subject:

Without the right amount of air any gun will spray like crap. You need continuous pressure to maintain atomization and with the CFM rating of your compressor, it won't hold up for long with a Sata or anything else that uses the same amount of air. If you are willing to shell out the kind of bucks it takes to buy a Sata, you might want to check into an Iwata gun. They are also pretty spendy but they are a LVLP type gun and only use about 7 CFM

Bklyn63 · Posted: Sat Dec 04, 2004 6:36 am Post subject:

you guys need to tell us how much cfm your compressor is putting out. we cant tell you what to use unless that info is known.


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