Affordable Compressor Water Filter

Heres one I may get. I'll wait for the sale(usually under $100). I bet harbor freight has them cheap.
Air Dryer | Princess Auto
The dessicant is corrosive, forget to drain it and you have a mess on your hands. Then it gets into everything. I ran one for a while
Then i started having problems, and rethunk my airline routing.
Lines run up from the compressor,if moisture accumulates, it runs back into tank. Which i try to drain on a regular basis.