Used 264 sq. ft. vertical Graphilor cylindrical block heat exchanger. MFD by Carbone, model 1670-38, Serial # 10802, built 1997. National Board #1069. ASME code stamped for 109 psi @ 350 deg. F, shell side; 100 psi & FV @ 350 deg. F, -20 deg F on tube side. Single pass on process side. Shell 22" OD x 115" long. Shell has 13 baffles @ 7" spacing. With (315) 3/8" OD tubes on process side, (2100) 3/8" tubes on service side. Openings: Head 1-3"; 1-8" head; shell 2-3", 1-3/4".