Used 56 sq.ft. horizontal stainless steel U-tube heat exchanger. MFD Alabama Heat Exchanger, 1996, NB stamped. CS Shell rated 150 PSI @ 300 deg F. 316-SS Tubes rated 150 PSI @ 300 deg F. 316-SS Heads. (36) Tubes, 3/4" dia x 8'L. Tema Type: BEU. Previous use: Recovery Chiller.