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Need some professional advice. We have excessive foaming issues on our downstairs tap. We run two beer lines from a splitter at the bottom of each serving vessels. The upstairs line flows just fine. The downstairs line however must go up and down and the outside across a very long run. A big portion of it must run outside, which we have insulated it with glycol chilled lines. The beer comes out of the downstairs taps at a cold temp however it has sporadic burst of foam and continued excess foam that is very dense and doesn't want to dissolve back into beer. Oddly, we see gas bubbles as soon as the downstairs beer line leaves the splitter just below the serving vessel. We have seven tank set ups just like this diagram. Oddly One of the tanks set up does not foam nearly as bad and it doesn't have the same amount of gas bubbles in the line. We've tried flow control taps and they do not seem to help us. We use a centralized CO2 system that feeds CO2 into the top of each serving vessel. Any suggestions are welcome
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