1500 Gallon Alloy Fabricators Inc. 316L Stainless Steel Reactor. Rated 100 PSI & F/V internal @400 deg. F rated 180 PSI @400 deg. F half pipe coil jacket top entering Chemineer turbine agitator, 5 HP, 84 RPM, exp. Proof national board #888 altered by Feldmeier in 1998, built 1974 Serial Number 1729-2.