Used Alloy Fab approximately 50 gallon stainless steel jacketed vessel. Approximately 24" diameter X 24" straight side. Internal rated 15 PSI /FV @ 360 degrees F. Jacket rated 15 PSI @ 360 degrees F. Shell thickness .140. Dished bottom. Bolted dished top. 1" Center bottom outlet. On Castors. National board 740. Serial #1595-1. Built 1973.