Air Compressors and Blow Guns

[40 Deluxe]

In the various repair shops where I worked in my career it was always standard practice to drain the compressor tank every day and leave the drain open overnight. This assured that no liquid water was left in the tank. If you just open the drain valve long enough for it to quit blowing liquid, there will always be some water left in the tank. Remember: RUST NEVER SLEEPS!