with 316 SS rotor, Jacket rated for 218 psi at 482 degrees F. Heating surface area 150.7 Sq. Ft., Serial numbers: Lower Body Serial Number 1400/56, National Board Number 717; Interm body Serial Number 1400/56, National Board Number 716; Upper Body Serial Number 1400/56, National Board Number 715; Lower cone Serial Number 1400/56, National Board Number 718. Body is 850 mm inside diameter x 6320 mm to bottom of cone. Rotor assembly is 4 blade 316 SS construction, bottom cone is solid Hastelloy, shell is Hastelloy Clad. Unit driven by a 25 hp, 3 phase, 60 cycle, 230/460 volt motor, with Class 1 Group D label, Rotor speed is 880 rpm.