USED KAM THERMAL 15 SQUARE FOOT SHELL AND TUBE HEAT EXCHANGER. 316L STAINLESS STEEL TUBES, TUBE SHEETS, AND BONNETS. (20) 1/2" DIAMETER X 6' LONG TUBES RATED 100 PSI/FULL VACUUM @ 300°F. CARBON STEEL SHELL RATED 100 PSI/FULL VACUUM @ 300°F. 1.5? TUBES INLET/OUTLET; 2? SHELL INLET/OUTLET. NATIONAL BOARD #4883. BUILT 2001.