5-277-08-024-001

A double-wall two-pass U-bend bundle gives this configuration the thermal and mechanical margin expected of Diamondback tank heater equipment in 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. Its envelope centers on a 8-inch diameter 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. Design ratings run to 150 PSI on the shell side, 150 PSI on the tube side, and 375°F maximum temperature. This build is designated 5-277-08-024-001.