A U.S. sixth-barrel keg holds about 5.16 U.S. gallons, or roughly 661 fluid ounces. That works out to around 55 servings of 12 ounces before accounting for foam, line loss, spills, and serving-size differences. Whether you are opening a new business, replacing an older unit, or upgrading a busy service area, research around how many beers is a 1/6 keg should connect product selection to the way...