Get current pricing for Carbone, 773 Sq Ft Graphite C 773 Sq Ft Graphite Carbone Vertical Shell & Tube Heat Exchanger. Shell Rated 75 Psi At 338 F. Tubes Rated 25 Psi At 338 F. Tube Diameter 7/8. Tube Le . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: