What size air compressor should I buy? - Page 2 - JeepForum.com
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post #16 of 16 Old 03-16-2011, 06:30 AM
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Originally Posted by leaf777 View Post
Whats the deal with the mouture coming out of my a/c? I was using this grinder and my hand was getting wet. I've seen filters of some sort???? I have a release valve in the bottom of the tank(homemade) that I drain and release presure everytime I finish with it, I would imagine if I didn't the tank would be 1/2 full of water by now????
When you use air tools that really put a load on the compressor the air is hotter because the compressor is running more and the hot air causes moisture in the tank. The more the compressor runs the more water will get into the tank.

A larger compressor will cut down on some of this moisture, but not entirely. Drain the tank every day. There are refrigarated air dryers on the market that will take most of the moisture out of the air but they will cost you as much as the compressor. Some compressors, Quincy and Champion are two that I know of, have a built in aftercooler that works pretty good.

If you really want a good useable setup take the advice you've seen from the guys here and get the 2-stage compressor. Now here's a neat trick with the 2-stage. They almost all run at 175 psi. That's really more air pressure than you need for most stuff. So put a regulator on the outlet side of the tank and set it at 120 psi. That pressure will work great. Most of these 2-stage compressors are set to kick on when the tank pressure drops under 140 psi. With the outlet set at 120 psi and the compressor kicking in at 140 psi the compressor doesn't work as hard to maintain your shop air pressure of 120 psi, you've got some reserve this way.

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