5-275-04-030-001

Built around a two-pass U-bend bundle, 5-275-04-030-001 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. Physically, the unit runs a 4-inch shell, and roughly 29-1/4 inches overall in a 2-pass arrangement. That works out to about 5.6 square feet of heat transfer surface on 3/4-inch O.D. tubes. Material selection covers cast iron bonnets, steel shell, copper tubes, and steel tubesheets. On the ratings side, expect 150 PSI on the shell side, 150 PSI on the tube side, and 375°F maximum temperature. Installations range across hydronic-fed storage systems, hot water storage tanks, and process tank heating.