SU144-2

this configuration is a SU/WU unit built on a removable U-tube bundle for steam-to-liquid heating. Steam condenses in the single-pass shell while the heated fluid travels the tubes. The configuration measures 14 inches across the shell, 48-inch shell length, and roughly 56-3/4 inches overall in a 2-pass arrangement. That works out to about 116 square feet of heat transfer surface on 3/4-inch O.D. tubes. That combination is cataloged as SU144-2. Standard construction uses cast iron or brass bonnets, steel shell, copper tubes, and steel tubesheets. Design ratings run to 150 PSI on the shell side, 150 PSI on the tube side, and 375°F maximum temperature. The series sees regular use in building comfort heating, instantaneous domestic water heating, and swimming pool heating.