Groen 400 gal Pressure process kettle with Scrape surface agitation and internal 30psi pressure rating. Top agitation with Gear head drive and seals , 6″ opening and port for secondary agitator. Locking dome top , center bottom outlet with valve. Spec tag: Mdl 400 gal pressure vessel , serial number 1973 rated 100psi @ 338f and internal pressure of 30 psi. 316SS construction.