5-267-06-072-002

The Diamondback DSU/DWU platform pairs a double-wall U-tube bundle with proven shell-side baffling, and this configuration 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. Dimensionally it is a 6-inch shell unit, 72-inch shell length in a 4-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. The unit is rated for 150 PSI on the shell side, 150 PSI on the tube side, and 375°F maximum temperature. Installations range across domestic water systems under double-wall codes, potable water heating and cooling, and process cooling where mixing cannot be tolerated. This build is designated 5-267-06-072-002.