Get current pricing for Oem, 350 Gal E.J. Kelly S E.j. Kelly Approximately 350 Gallon Vertical 304 Stainless Steel Jacketed Tank. 54 Diameter X 39 Deep. Jacket Rated 150 Psi @ 84 Degrees F. 1/3 . Product Category: Process Equipment, Sub Category: Process Tanks/kettles: