Used 50 gal. Sanitary 316 Stainless Steel Portable Vertical Pressure Vessel, mfg by Cherry Burrell. 24" dia x 24" straight side, Sanitary Stainless Steel construction with polished internal finish, rated 90 PSI @ 100 F internal, 15 PSI @ 100 F external, quick opening dished top head with (1) 8" center opening for agitator, (1)- 4", (2) 1-1/2". Center bottom outlet with valve, stainless steel legs on casters. ASME & NB Code Stamped, Built 1987.