Also make a post compressor air cool down water trap. Never try to spray
anything without it. Good for all around use.
Put a male quick connect into a 1 1/4" (or you can go larger if it suits
you; can't be too large) black iron T into the side with whatever bushings
you want, or you can put a barb fitting with a foot piece of air line on it
with a male quick connect on the end. This is what plugs into the air
compressor. Out the bottom of the T, put a reducing bushing and a ball
valve on an elbow, perhaps a 1/2". Out of the top of the T put a 5' piece
of black steel pipe. On top of that, a reducing coupling and perhaps a
street L, into which you put a female quick connect. This is where you
connect your air line to use doing whatever.
How it works, is by putting the hot moisture saturated air from the
compressor into the bottom of the assembly, it has to send the air upwards
to get out, and the large diameter insures that the air is moving slowly
enough and stays there long enough against the large mass of the cool steel
pipe, that it cools, condensing some of the moisture out to fall to the
bottom ball valve to be drained later.
It really works. Especially useful when you are running a small compressor
too hard for the job, especially for spraying. If any of that moisture
laden air condenses as it is being sprayed (as it will if you don't use an
air dryer) you get fish eye bubbles in your finish.
This works so well, I don't use a disposable desiccant filter when I spray
and have not for years.
-- Jim in NC
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