5-262-06-048-001

The Diamondback DSU/DWU platform pairs a double-wall U-tube bundle with proven shell-side baffling, and this configuration applies that design to 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. Dimensionally it is a 6-inch shell unit, 48-inch shell length in a 2-pass arrangement. It carries 3/4-inch O.D. tubes. Standard construction uses cast iron bonnets, steel shell, copper (double wall) tubes, and naval brass tubesheets. On the ratings side, expect 150 PSI on the shell side, 150 PSI on the tube side, and 375°F maximum temperature. Common applications are domestic hot water where codes require double-wall separation, potable water heating, and food and beverage process heating. This build is designated 5-262-06-048-001.