5-267-06-072-003

For liquid-to-liquid transfer with cross-contamination protection, the Diamondback DSU/DWU line offers a double-wall U-tube bundle design; 5-267-06-072-003 sits within that range. Each tube is vented to atmosphere through a diamond-pattern air gap, so a failure in either wall reports itself outside the unit. Physically, the unit runs a 6-inch shell, 72-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. Design ratings run to 150 PSI on the shell side, 150 PSI on the tube side, and 375°F maximum temperature. Typical duty includes domestic water systems under double-wall codes, glycol-to-potable loops, and process cooling where mixing cannot be tolerated.