Tom Veatch firstname_lastname AT pixius dot net wrote:

Bottom line... it's probably better to dump the air when you're
done... at least for shop compressors.

Or:
http://www.harborfreight.com/cpi/cta...emnumber=42221


I bought one of these from HF, when I bought a new compressor
recently. I must have spent the better part of a day or so trying to
figure out a way to install this. The main problem I ran into is with
the air hose supplied and the compression fittings it uses.
Basically there weren't enough parts there to splice this device into
the system as they don't give you any additional compression fittings.
On my compressor, there's a solid copper line running between the
tank and the regulator. So I would need two more fittings to
rework things so that the automatic drain valve could be tee'd in
between the tank and the regulator.

I spent several hours trying to find more of those fittings locally,
but none of the hardware stores had them and HF itself does not
sell them. Perhaps a specialized industrial supply would have them,
but after spending a few hours trying to hunt stuff down, I gave
up and returned the device. The device itself probably works fine,
but you'd likely need to dig up some other type of way to splice
it into your system that uses some other type of fittings and hose.
It would be nice if they'd supply additional male and female
compression fittings with the device, even if that increased the
price of the device by a few bucks.

In the end, I found it's easy enough to just open the drain at the
bottom once a day and let it blow out the accumulated moisture.

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