Used 25,494 Gallon Vertical Carbon Steel Pressure Vessel. Built by Beaird Industries. 138" ID x 47'3"OAH. Rated 297PSI@ 650F. (2) 20" Manway, (1) 6" Hydro Carb. Outlet, (1) 6" Backwash Outlet, (1) 4" PSV, (1) 4" Cat. Dump, (2) 2" Thermowell, (1) 2" Drain. Serial #137053-01-2. National Board #56037. Built 1989. Previous use: MTBE Reactor.