5-262-04-072-012

this configuration is a Diamondback DSU/DWU unit built on a double-wall U-tube bundle for steam-to-liquid heating with cross-contamination protection. An atmospheric air gap between the inner and outer tube vents any breach to the outside, giving a visible telltale leak instead of silent mixing. Physically, the unit runs a 4-inch shell, 72-inch shell length in a 4-pass arrangement. It carries 3/4-inch O.D. tubes. As furnished, materials include cast iron bonnets, steel shell, copper (double wall) tubes, and naval brass tubesheets. The unit is rated for 150 PSI on the shell side, 150 PSI on the tube side, and 375°F maximum temperature. This build is designated 5-262-04-072-012. Common applications are food and beverage process heating, potable water heating, and health care and institutional plumbing.