Used 495 Sq Ft Mitternight Boiler Works Inc. Inconel Horizontal Shell & Tube Heat Exchanger (High Alloy). Shell Rated 200/FV @ 650 F, -20 F @ 200 psi, Tubes Rated 200/FV @ 900 F, -20 F @ 200 psi. Volume Capacity: 265 Gallons. Inconel Shell 14" OD x 24' 2" Length; (105) Inconel Tubes x 3/4" OD x 14bwg x 23' - 11" Length. Manufacturer's Serial #3233, National Board #1975, Empty Weight: 4450# -- Year Built: 1999.