Thank you for this video. I’m also adding a train horn to my air lift bag system. You took the guess work out of it.

Is that the 2 gallon tank?

Tank is a bad install since there’s no low point drain valve. As is the tank would have to fill up 1/3 to 1/2 before it can escape the drain valve. Water is heavier than air so it ends up at bottom. So drain needs to be at the lowest point in tank.