Used 2095 Sq Ft. U-Tube Heat Exchanger. Mfg by Old Dominion 1976. Carbon steel Shell (SA-516) rated 300 PSI/FV @ 650 deg F; Carbon Steel Tubes (SA-214) rated 300 PSI @ -15 to 650 deg F. Carbon Steel Heads (SA-516). Shell - 4'2" dia. x 25' 6"L ; (258) Tubes : 3/4" dia. Flanged Nozzles: (1) 12", (1) 8", (2) 6", (3) 2". Type AKU. S/N: 75-104-A, NB# 27012. Weight: 16,000 Lbs