5-276-06-072-002

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. Its envelope centers on a 6-inch diameter shell, and roughly 69-1/8 inches overall in a 2-pass arrangement. That works out to about 26.8 square feet of heat transfer surface on 3/4-inch O.D. tubes. Material selection covers 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 375°F maximum temperature. This build is designated 5-276-06-072-002. Typical duty includes domestic water storage heating, hydronic-fed storage systems, and hot water storage tanks.