Used 10 gallon Pfaudler reactor, hastelloy construction, bolt on removable dish top, dish bottom, rated 300 psi at 450 f internal, jacketed for 150 psi at 450 f, top mounted Pfaudler DTW agitator drive with mechanincal seal, shaft and blade, hydraulic motor driven, serial# J043008, national board# 50468, new 2001.