On Wednesday, June 3, 2020 at 11:49:27 AM UTC-4, Andy wrote:
Is there anything to keep water out of an air compressor tank?

It's a real pain to drain it everytime.

Thanks,
Andy

You don't have to drain it everytime, just occasionally. I'm not sure that
draining it every time buys you anything at all. When the air gets
compressed moisture, water is going to wind up in the tank. Even if
you drain it after every use, the inside will be still be wet, won't
dry out and that leads to rust, which eventually causes it to fail.
The good thing is the eventually is a very long time. I have an old
Sears one that started to rust out, it's from the 60s. Maybe new ones
rust out faster, IDK. But from all that I see and know, I don't think
draining it every time is going to make much, if any, difference. I would
think the water left from 6 months of using it or the water left after
you drain most of it out after each use would probably still rust it out
about the same.