5-262-04-060-012

Configured for steam-to-liquid heating with cross-contamination protection, 5-262-04-060-012 carries the double-wall U-tube bundle construction that defines the Diamondback DSU/DWU 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. Its envelope centers on a 4-inch diameter shell, 60-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. Operating limits are 150 PSI on the shell side, 150 PSI on the tube side, and 375°F maximum temperature. Installations range across domestic hot water where codes require double-wall separation, potable water heating, and health care and institutional plumbing.