559 sq. ft. Doyle & Roth U-Tube heat exchanger, Model LC18602-12H, consisting of an 18" OD type 316SS tubesheet construction containing (125) 3/4" OD X 18 BWG SA249 316SS U-Tubes with a 12' nominal bundle length. OAL: 15’ 5â€. TUBES rated 125PSI @ 200°F; CS SHELL rated 75PSI @ 200°F, Head Material: 316SS. Fittings: (2)-8†on head, (2)-6†on shell. Built 1980. NB: 5891, SN: J2812-M7378.