Used 15 Gallon, SS Fermenter/Bio-reactor. Chemap Company bio reactor, Model Number 9-3973, 15 gallon, stainless steel construction. Shell and jacket rated 50 PSI/FV @ 302 deg. F. Bottom driven agitation 2.2 kW sets of discs with pin bars for agitation and baffles. Manufactured 1987, looks great, numerous inlets. Serial number 10982/2.