5-261-20-036-004

The SU/WU platform pairs a removable U-tube bundle with proven shell-side baffling, and this configuration applies that design to steam-to-liquid heating. Steam condenses in the single-pass shell while the heated fluid travels the tubes. The configuration measures 20 inches across the shell, 36-inch shell length, and roughly 49-3/4 inches overall in a 2-pass arrangement. That works out to about 194 square feet of heat transfer surface on 3/4-inch O.D. tubes. The build specifies cast brass bonnets, steel shell, copper tubes, and brass tubesheets. On the ratings side, expect 150 PSI on the shell side, 150 PSI on the tube side, and N/A maximum temperature. Common applications are instantaneous domestic water heating, radiant panel and snow-melt converters, and swimming pool heating. This build is designated 5-261-20-036-004.