Used 528 gal (2000 L) 316L Stainless Steel Jacketed Pressure vessel. Manufactured by Precision Stainless. Internal rated 50 PSIG/FV @300F. 304L Jacket rated 100PSIG@300F. Dish bottom and top. Top manway. (4) Leg mounted. National Board #4818. Serial # 6516-18. Built 1993.