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Air compressor drier/dessicant setup questions

el_chupo_

Well-known member
Joined
Feb 7, 2012
Messages
171
Location
DFW, TX
Hello all. I am going to be moving to a new compressor set up (from a 30 gallon Husky Pro VT6315 setup to a CAT 5510SE), and now going to a CAT 4620 compressor.
Specs:
2.0 HP (Rated/Running)
4.6 Gallon Aluminum Tank
6.40 CFM @ 40 PSI
5.30 CFM @ 90 PSI

This is to facilitate some life changes that require smaller space and quieter work environment. With that said, I have recently began expanding my "arts and crafts" hobbies, which now include some basic powder coating, sand blasting, and airbrush/painting.




The tools:

I bought a Jobsmart mini blast cabinet from Tractor Supply, and while the specs call for 5CFM, I have had acceptable results with AlOx blasting with the ~2.2 CFM from the little CAT compressor, and with the new one being rated at 5.3 CFM, I should be just fine.

Obviously the airbrush and powder coating are fine with just about any compressor, but I hope to be stepping up to a mini HVLP gun, and have been looking at a few that require 3-4CFM @ 30-40psi, so the new compressor should be fine for the limited painting I will be attempting. We are not talking cars for this use. Were talking about spraying 1-2 oz of product at a whack. Im just not going to use an air brush for some of the larger items I may be painting.


So with that said, I know I need to address moisture. My work space will be in my garage, in north TX. Most of the time average humidity is 65-70*.

I know I will need some way to get moisture out, but I am not sure of the best option. My first thought was a filter/desiccant combo, but I know that it will probably be lacking if I run a 3ft hose from the compressor to it, then hose to my regulator/distribution block.

My next thought was to go to a box store and grab some 1/2" copper tubing, some T and 90* fittings and a few ball valves, and make a V, U or W shaped "radiator" type moisture trap, with a couple of low spots with ball valves for draining, then have that go to a moisture filter/desiccant trap (Like this one from HF ), then my air hose up to my distribution setup, then a disposable mini desiccant at the tool.

Does that seem like a reasonable solution, or are there better ways to skin this cat on a modest budget (no $600 filters for this).

Thanks!
 
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Lelandwelds

Well-known member
Joined
Sep 6, 2017
Messages
2,443
Location
Central Texas
For "smaller space" I would consider mounting a water jacket above your drip leg. Ethylene or propylene glycol will prevent freezing. A valve with a restricted opening and and a hose into a weighted milk jug gets rid of most bulk water. I would finish off with a coalescing filter from ebay. If your volumes are higher than I pictured, add a water/particulate filter upstream. I want to experiment with a radiator inside a chest freezer plugged into auxiliary thermostat.

If your volumes are lower, there's 200 cubic ft in a co2 bottle and the water is in the parts per million

http://www.ebay.com/itm/1-2-Particu...sture-Compressed-Air-Compressor-/191716537495
 
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