Get current pricing for Carbone, 155 Sq. Ft. Carbone 155 Sq. Ft. Vertical Graphilor Polyblock Heat Exchanger. Mfd By Carbone, Model Pbc8d-9pu-1-4, Serial # 10945, Built 1997. Asme Code Stamped For 1 . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: