HTWU85-44

The HTWU platform pairs a removable U-tube bundle with proven shell-side baffling, and HTWU85-44 applies that design to 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 8-inch shell, 60-inch shell length, and roughly 65-1/8 inches overall in a 4-pass arrangement. That works out to about 41 square feet of heat transfer surface on 3/4-inch O.D. tubes. Standard construction uses 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.