Used 4,000-gallon 304 stainless steel reactor. Manufactured by Four Corp. Internal rated 100 psi/FV @400F, 1/2 pipe jacket on side and bottom rated 90 psi@400F. 102" diameter x 105" straight side, dish top and bottom, Lightning series 10 agitator drive with mechanical seal, (4) baffles, on legs, serial# 1176, national board# 1107, built 1996.