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Airless vs AAA

9/30/22       
Mastercabman

Out of curiosity
Does anyone uses or recommend an airless pump to spray solvent based finish?
I've always use an AAA,pressure pot,gravity type of spray equipment and never used an airless pump like the Graco X5(as an example)
I know the pressure is a lot more on an airless but you can put a RPFF tip that would be great for that type of coating
What am I missing?

10/3/22       #3: Airless vs AAA ...
Brian Z Member

I have a Titan ED655 airless (diaphragm pump) that I use exclusively for spraying waterborne 2k polyurethanes (mostly Renner). It works great for the thicker H2O 2k material. I was told that spraying solvent thru it would shorten the life of the pump because it would begin to eat the seals and the pump would need to be rebuilt sooner. I don't know if this is true, but it was taken on good faith from a couple people with a lot of experience.
I spray all my solvent based conversion varnish & 2k poly through a Wagner EvoMotion AAA setup, and I get such good results I've never thought of changing to a different rig.

10/19/22       #4: Airless vs AAA ...
Scott

I use a Kremlin 30:1 pump for most of my spraying in the shop. I also have an airless that I use on site, the advantage of the airless is you don’t need a fairly big compressor to run it.
I would say the quality of finish is fairly comparable with either system, I have read of a guy who does tests on pieces of glass and he thinks the air assist gives a better finish, I doubt many customers could tell the difference.

10/19/22       #5: Airless vs AAA ...
Mastercabman

Scott
Thanks for your reply but explain to me this
"The advantage to run an airless is you don't need a big compressor.."
Why do you need a compressor at all to run an "airless"?

10/19/22       #6: Airless vs AAA ...
Josh Koschak

Mastercabman, I believe he is trying to say with airless you don't need a compressor, but with an AAA you need a fairly big compressor.

10/19/22       #7: Airless vs AAA ...
Scott

Sorry I didn’t make that clear, Josh clarified what I was trying to say. Thank you.

10/19/22       #8: Airless vs AAA ...
Mastercabman

Scott

Got it!
Thanks

12/17/22       #9: Airless vs AAA ...
Daniel Shafner  Member

You can use a Graco G40 or a CA Technologies Cougar air-assisted airless on an airless pump, but you would want to lower the fluid pressure to less than 1200 psi. You need a fluid gauge so that you can dial down your pressure, properly. Tritech pumps can handle solvents. You still need a compressor to feed air to the horns of your air-assisted airless gun. AAA guns don't require much CFM as do conventional air supplied (CAS) guns. Small hotdog roofer's compressors work fine.

The Graco G15 and the CA Technologies Bobcat AAA guns aren't designed to deal with fluid pressures above 1500 psi and that's why you can only use a gun that's robust enough, such as the Graco G40 and the CA Technologies Cougar.


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