I have, you guessed, it another kegerator foaming question.
Ill start with my system. Its a Beverage Air BM23 commercial unit that runs at 38?+/-1 degF and works great. I have 7' of line balanced out to 12psi of co2 at the regulator.
I have run MANY kegs of commercial and hombrew through it but I have had strange results from a recent homebrew in a corny keg. This british ale (oak aged) tastes great but comes out and immedietly foams to about 50% once its gets in the glass.
There are no bubbles in the line above the ball valve tap (temperature issue) and there are no bubbles going immedietly into the tower tap stainless steel line either. What is really strange is I have another beer on tap next to this one which pours perfect each time.
I naturally sugar carbonated the keg before for a few weeks, so my only guess is that it has naturally over-carbonated. But the the beer does not appear to have co2 dissolving out after the 'head/foam' has settled.