HTWU104-25

this configuration is a HTWU unit built on a removable U-tube bundle for high-temperature water heating. 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 2-pass arrangement. That works out to about 56 square feet of heat transfer surface on 3/4-inch O.D. tubes. That combination is cataloged as HTWU104-25. As furnished, materials include 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.