Used 95 Sq. Ft. SS horizontal U-Tube Shell & Tube Heat Exchanger, built Smithco, 1974. 304-SS Shell rated 75 PSI @ 150 deg F. 316L-SS Tubes rated 300 PSI @ 300 deg F. SS Heads. (14) 1" Tubes x 25' L. 3" Inlet, 3" outlet. Shell: 1 Pass; Tubes: 2 pass. . U-1 on file