I have a T fitting on mine. I don't have too many problems with it except when force carbing one keg while the other one is at perfect carbonation. Its just a matter of un hooking one of them for a night and letting the other carb up. Also, I think it throws the pressure regulator off for the first few days. If I had the money at the time I would rather just have a separate regulator but all in all, it has worked well for almost a year.