Used approximately 570 Liter (150 gallon) stainless steel Fermenter, manufactured by Alloy Fabricators Inc. Internal rated 116 PSI / Full vacuum @ 400 degrees F. Jacket rated 75/FV @ 400 degrees F. 1 tier 6 blade disc agitator. 2 hp Lightning drive model 71S2 17.5:1 ratio 100 rpm output. Vessel approximately 24" diameter X 68" straight side. Serial number 2252. National board number 1237. Built 1980. Alloy Fab.