HTWU104-45

Built around a removable U-tube bundle, this configuration delivers high-temperature water heating for demanding service. High-temperature water flows through the tube side, so the heads rather than the shell set the pressure limit. Physically, the unit runs a 10-inch shell, 48-inch shell length, and roughly 53-3/8 inches overall in a 4-pass arrangement. That works out to about 53 square feet of heat transfer surface on 3/4-inch O.D. tubes. Material selection covers cast iron bonnets, steel shell, copper tubes, and steel tubesheets. On the ratings side, expect 150 PSI on the shell side, 400 PSI on the tube side, and 375°F maximum temperature. This build is designated HTWU104-45. Installations range across campus and district energy systems, industrial process heating, and high-temperature hot water distribution.