5-276-08-018-001

Built around a two-pass U-bend bundle, this configuration delivers in-tank heating with boiler water in the tubes for demanding service. The bundle mounts through a collar in the tank wall and heats the surrounding fluid by natural convection. Dimensionally it is a 8-inch shell unit, and roughly 16-1/4 inches overall in a 2-pass arrangement. That works out to about 11 square feet of heat transfer surface on 3/4-inch O.D. tubes. As furnished, materials include cast iron bonnets, steel shell, copper tubes, and brass tubesheets. Design ratings run to 150 PSI on the shell side, 150 PSI on the tube side, and 375°F maximum temperature. Installations range across hydronic-fed storage systems, domestic water storage heating, and hot water storage tanks. This build is designated 5-276-08-018-001.