Production Brewery Systems Allied Beverage Tanks, Inc. builds small-scale and medium-scale steam-heated brewhouses that incorporate state-of-the-art North American engineering designs, technology and quality control standards at remarkably affordable prices. ABT brewhouses are available in both 2-vessel (brewkettle/whirlpool and mash/lauter tun) and 4-vessel (mash tun, lauter tun, brewkettle and whirlpool) versions. The ABT 15-barrel/17.25-hectoliter Brewing System The ABT 30-barrel/35-hectoliter Brewing System