Hmmm;
Me tink you rustum through! Good that was possibly where it was designed to fail. Yup! Air tanks should be drained daily! Learned that years ago. Oh, that was for the big Diesel Truck Repair and Auto Body shop, sorry. No, all kidding aside, got in the habit and drain my Airbrush Compressor tank, On the unit that has one, every second use, especially in Humid weather.