5-272-10-054-001

this configuration is a Diamondback tank heater unit built on a double-wall two-pass U-bend bundle for in-tank heating with steam in the tubes and cross-contamination protection. The vented air gap between tube walls gives a visible telltale leak rather than allowing tank contents and steam to mix. Dimensionally it is a 10-inch shell unit, 54-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. On the ratings side, expect 150 PSI on the shell side, 125 PSI on the tube side, and 375°F maximum temperature. This build is designated 5-272-10-054-001. The series sees regular use in domestic hot water storage under double-wall codes, food-grade process tanks, and institutional water storage.