Used 7000 gallon 316 Stainless Steel Vertical Mix tank with internal coil. Manufactured by Wolfe. 316SS coil, insulated. Rated 0.72/-0.36 PSIG at 475F. Top Mounted Agitation, (4) Internal Sidewall Baffles, Flat Top & Dished Bottom. Vented. Serial #3923, built 2001.