It's actually a Y fitting off the regulator (not inline) and 2 barbed ball valves off that Y, so if one is getting pressure and the other isn't it probably is the ball valve that is not working properly, cause obviously the Co2 is coming out of the regulator and through the y fitting in order...
*First Post*
Not new to home brewing (2 years now) but new to kegging. Don't ask me why I bottled for 2 years I don't know!! haha. Just kegged my first beer (Bel Wit), I have a 2 port regulator I am using for the first time. 1 barbed ball valve outlet works perfect and the Co2 flows freely...