5-277-10-042-001

5-277-10-042-001 is a Diamondback tank heater unit built on a double-wall two-pass U-bend bundle for in-tank heating with boiler water in the tubes and cross-contamination protection. The vented air gap between tube walls gives a visible telltale leak rather than allowing boiler water and tank contents to mix. Dimensionally it is a 10-inch shell unit, 42-inch shell length in a 2-pass arrangement. It carries 3/4-inch O.D. tubes. Material selection covers cast iron bonnets, steel shell, and copper (double wall) tubes. The unit is rated for 150 PSI on the shell side, 125 PSI on the tube side, and 375°F maximum temperature. Installations range across institutional and health care water storage, glycol-fed storage heating, and potable water storage tanks.