5-272-04-036-001

For in-tank heating with steam in the tubes and cross-contamination protection, the Diamondback tank heater line offers a double-wall two-pass U-bend bundle design; this configuration sits within that range. The vented air gap between tube walls gives a visible telltale leak rather than allowing tank contents and steam to mix. Its envelope centers on a 4-inch diameter shell in a 2-pass arrangement. It carries 3/4-inch O.D. tubes. As furnished, materials include cast iron bonnets, steel shell, and copper (double wall) tubes. The unit is rated for 150 PSI on the shell side, 150 PSI on the tube side, and 375°F maximum temperature. Installations range across domestic hot water storage under double-wall codes, potable water storage tanks, and institutional water storage. This build is designated 5-272-04-036-001.