Used 45 gallon STAINLESS STEEL JACKETED REACTOR FV/55 PSI 170 liter. Made by Northland Stainless, Serial no. 946345, year 1994, National Board no. 1640. Shell rated for Full Vacuum and 55 psi @ 300 deg. F. 0.250 inch thick. Jacket rated for 70 psi @ 300 deg. F, 0.187 inch thick. 24 inch ID x 23 inch straight side with dished bottom and top. 30 inch outside diameter with insulation. Tri-clamp 1 inch bottom center outlet, 4 inch, (3) 1.5 inch, and (2) 1 inch top fittings. Has an 11 inch hinged with clamps top port with a 4 inch tri-clamp fitting. Side and bottom jacket fittings. Attached to a 26.5 x 34 x 6 inch tall frame on wheels. O/A height is 52 inch. Has mount for bottom mag drive agitator. Possibly 316 SS, need to test.