5-261-18-120-004

this configuration is a SU/WU unit built on a removable U-tube bundle for steam-to-liquid heating. Steam condenses in the single-pass shell while the heated fluid travels the tubes. Dimensionally it is a 18-inch shell unit, 120-inch shell length, and roughly 132-1/2 inches overall in a 2-pass arrangement. That works out to about 483 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. The series sees regular use in building comfort heating, radiant panel and snow-melt converters, and instantaneous domestic water heating. This build is designated 5-261-18-120-004.