Cask tubing & pipe

Cask tubing carries beer from the cask up to the beer engine, and unlike keg line it works under suction rather than pressure.

  • Cask line works under suction u2014 it must not collapse
  • Match the bore to what is already fitted unless changing the whole run
  • Replace tubing that has gone cloudy or stiff rather than cleaning it again

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Because a beer engine pulls rather than pushes, cask line has to hold a vacuum without collapsing. That makes wall thickness and bore matter differently than they do on a pressurised keg line, and it is why cask line is specified separately rather than being the same tubing in a different colour.

How to choose

What to know

Bore affects the pull. Too narrow and the engine works hard and the pour is slow; too wide and each pull moves more beer than the cylinder expects. Match what is already fitted unless you are changing the whole run.

What to know

Cask line gets cleaned on the same cycle as everything else, and it is worth replacing rather than endlessly cleaning once it has gone cloudy or stiff. Tubing is cheap compared to a week of beer that tastes wrong.

Common questions

Can I use keg line for cask?

Not reliably. Cask line is pulled under suction and has to resist collapsing, which is a different requirement from keg line working under positive pressure. Use tubing specified for cask.

Have a look at

Washroom & cleaningCocktail kits