43.05 sq. ft. vertical graphite cylindrical block heat exchanger. MFD by Carbone, type PBC8-5PU-1-6, Serial # 10975, NBB# 1165, built 1998. ASME code stamped for 155 psi @ 350 deg. F on shell side, 150 psi & FV @ 350deg. F, 50 psi & FV @ 0 deg. F on tube side. Single pass axial, 6 pass radial. Shell 15" OD x 80" long. Openings: Head 1-2"; Head 1-2"; Shell 2-1", 1-3/4", 1-2". With Rosemount temperature alarm.