HTWU125-24

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. Its envelope centers on a 12-inch diameter shell, 60-inch shell length, and roughly 66 inches overall in a 2-pass arrangement. That works out to about 104 square feet of heat transfer surface on 3/4-inch O.D. tubes. That combination is cataloged as HTWU125-24. Material selection covers cast iron bonnets, steel shell, copper tubes, and steel tubesheets. The unit is rated for 150 PSI on the shell side, 400 PSI on the tube side, and 375°F maximum temperature.