I bought the Summit SBC500JBL 7 years ago with a brass 2 tap. Never had any problems with it, and it easily fits 2 corny kegs and a 10 lb co2 tank inside. You might be able to fit a 3rd corny inside with the co2 outside, but can't guarantee it. I can't check for you either as I have a 30" copper pipe insulated inside the tower running straight down as my beerlines go up inside. They will remain cold inside the tower, thus dispensing a very minimul amount of foam on the first pour.