I made a jockey box using this stainless steel coil. I had to use a section of standard 1/4" beer hose to make one of the connections to a shank. The beer comes out very very foamy, any ideas what the problem/solution could be?
I don't keg so don't quote me, but I've done some reading on it in anticipation of kegging one day. I seem to recall reading somewhere if you get a lot of foaming it's because the pressure drop is too high. Try using a smaller diameter tube on the outlet of the coil or put a reducer in the line just before the tap. Your tube looks pretty wide.
The thing with jockey boxes too with a coil or cold plates is it difficult to determine what the line resistance will be, so the best thing is to adjust your dispensing pressure up and down till you get a good pour. You are not going to store the beer long term at that pressure so you dont have to be concerned about your carbonation level changing much in your beer.