Get current pricing for Carbone, Carbone 24 SQ. FT Bl 24.55 Sq. Ft. Vertical Cylindrical Graphite Block Heat Exchanger. Shell 15 Dia. X 49 9/16 Long. Mfd By: Carbone, Type Pbc8dl-2pu-1-6, Serial # 11124 . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: