Draught drawing systems are not hard to understand, but it does take some amount of knowledge to know how they work. The better you know how your system works, the quicker you will recognize problems and even be able to anticipate some of them. Beer lines require a balance between carbonation, pressure, and resistance. It’s important to get that balance right in order to result in the best possible tap beer. You can read part one and part two for more information about the four key components and achieving balance.