Used 2500 gallon 316L stainless Steel reactor. Manufactured by Alloy Industries. Internal MAWP 300PSI/FV @ 400F. 304 SS Full sidewall half-pipe Jacket rated 150PSI/FV @ 400F. Top center mounted agitator. (4) Leg mounted. Serial #4359. National Board #2897. Built 2006. Designed as hydrogenator.