5-262-06-060-003

For steam-to-liquid heating with cross-contamination protection, the Diamondback DSU/DWU line offers a double-wall U-tube bundle design; 5-262-06-060-003 sits within that range. 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. The configuration measures 6 inches across the shell, 60-inch shell length in a 6-pass arrangement. It carries 3/4-inch O.D. tubes. Material selection covers 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. The series sees regular use in health care and institutional plumbing, domestic hot water where codes require double-wall separation, and potable water heating.