5-267-12-096-003

The Diamondback DSU/DWU platform pairs a double-wall U-tube bundle with proven shell-side baffling, and 5-267-12-096-003 applies that design to liquid-to-liquid transfer with cross-contamination protection. Each tube is vented to atmosphere through a diamond-pattern air gap, so a failure in either wall reports itself outside the unit. Its envelope centers on a 12-inch diameter shell, 96-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, 125 PSI on the tube side, and 375°F maximum temperature. Common applications are domestic water systems under double-wall codes, glycol-to-potable loops, and potable water heating and cooling.