5-277-06-054-001

The Diamondback tank heater platform pairs a double-wall two-pass U-bend bundle with proven shell-side baffling, and this configuration applies that design to 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. Physically, the unit runs a 6-inch shell in a 2-pass arrangement. It carries 3/4-inch O.D. tubes. The build specifies cast iron bonnets, steel shell, and copper (double wall) tubes. Operating limits are 150 PSI on the shell side, 150 PSI on the tube side, and 375°F maximum temperature. The series sees regular use in potable water storage tanks, glycol-fed storage heating, and institutional and health care water storage. This build is designated 5-277-06-054-001.