5-262-08-108-002

For steam-to-liquid heating with cross-contamination protection, the Diamondback DSU/DWU line offers a double-wall U-tube bundle design; 5-262-08-108-002 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. Physically, the unit runs a 8-inch shell, 108-inch shell length in a 4-pass arrangement. It carries 3/4-inch O.D. tubes. The build specifies 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. Common applications are domestic hot water where codes require double-wall separation, food and beverage process heating, and health care and institutional plumbing.