5-266-04-072-001

Built around a removable U-tube bundle, this configuration delivers liquid-to-liquid heating and cooling for demanding service. Pumped boiler water circulates through the baffled shell against the tube-side fluid. Its envelope centers on a 4-inch diameter shell, 72-inch shell length, and roughly 76-7/8 inches overall in a 2-pass arrangement. That works out to about 13.9 square feet of heat transfer surface on 3/4-inch O.D. tubes. The build specifies cast iron bonnets, steel shell, copper tubes, and brass tubesheets. The unit is rated for 150 PSI on the shell side, 150 PSI on the tube side, and 300°F maximum temperature. This build is designated 5-266-04-072-001. Typical duty includes hydronic HVAC converters, oil cooling and snow melting, and pool and storage-tower heating.