I was wanting to get a experts view on how much air pressure needs to be added to a empty Water storage tank.
After draining all of the water from the tank, How much Air pressure should I have in the tank ?
And what percentage of the tank would have water , When the pump fills it and the pump turns off ?
Thanks, Have a Happy New Year.
P.S. Sorry for leaving out, Tank 30 feet above sea level, 120 Gal tank, 40/60 switch setting.