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Due to a variety of beer styles and storage options for your keg, thereâs no set answer to this question. Depending on who you ask or what site you read, the answer will range between 20-120 days.
In the U.S., this kind of keg typically contains liquids somewhere between 5 gallons and 6 gallons. It is smaller compared to a Â¼ barrel, which can actually hold as much as 7 gallons to 8 gallons. Furthermore, a Â½ barrel is significantly bigger than this size, which can store liquids of up to 14 gallons to 16 gallons.he 1/6 Barrel Keg Dimensions. The average height of 1/6 barrel kegs is 23.375 inches. In addition, they have an average diameter of 9.25 inches. Also called a torpedo keg, a sixth barrel has a net capacity of 19.8 liters, the equivalent of which is 5.23 U.S. gallons.