"scouter3" wrote in message
...
Condensation building up in the tank, causing internal rust, eventually
leading to tank rupture, is a long term possibility. Compressors have a
drain valve on the tank for this reason.

--
Lloyd Baker

"Buck Turgidson" wrote in message
...
Partially out of laziness, inertia, procrastination, and partially
because I use it several times a month, I leave my Porter Cable air
compressor full. Does this do longterm harm to the machine?


I just disposed of one (an old one) that rusted through. It manifest itself
through a pin hole leak in the bottom of the tank. I think if it had been
bled properly through out it's life, it would still be here.
If the condensate is rusty color, you know it is rusting.

I never leave air in my pancake compressor now. The pancake is easy to
drain. The old tank required getting down in my knees and looking under the
tank. I should have piped the drain to a valve located in the open where I
could see it. I would have drained the tank more often.