Although air-cooled long-draw draft beer systems still exist, glycol-chilled systems are the most common long-draw beer systems today. Therefore, this discussion is about glycol systems. Epitomized by custom draft beer towers, glycol towers are connected to a walk-in cooler by an insulated trunkline which houses the refrigerated product lines. The draft beer kegs are stored in the walk-in cooler and delivered at a temperature of 38°F (3°C). Temperatures above 38°F will cause the beer’s natural carbonation to be released from suspension, thereby leading to excess foaming and reduced profits! Therefore, long-draw draft beer systems need dedicated walk-in coolers.
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