intercooler for a shop air compressor

I run a similar style as 1wildrt

I have 4 runs up with a drain (ball valve) at the bottom of each .
I also used my old 80 gallon compressor tank as storage and cooling.
Then made another run up and down with drains.
I never see moisture now.

About once a month I crack open the drains (valves)
Once a year i drain the tanks or if I think of it in the humid summer.