I have an electric drain powered from the same switched power to the motor. It lets out a puff every time the motor starts. It puffs about every ten minutes of continuous run time. I really should add a push button switch to drain it at the end of use. It takes.a long time for a 60 gallon tank to build pressure. It holds pressure for more then one month before the gauge gets below the low pressure cut in pressure. I had to repalce the check valve into the tank wehn I bought the used tank.
Bill D