Used 2000 gallon 304L Stainless Steel vertical Pressure vessel. Manufactured by Hahn and Clay. 5'D X 12'H. Dish top and cone bottom. Rated 150 PSI @366F. MDMT 40F @ 150 PSI. 6" diameter center bottom on cone bottom, (1) 6" and (5) 2" openings along straight side, and (1) 8", (1) 6", (1) 3" and (2) 3" flange connections in top head. Serial # V3004. National Board # 602. Built 2018. Designed as digester tank for making probiotics.