5-267-12-060-002

For liquid-to-liquid transfer with cross-contamination protection, the Diamondback DSU/DWU line offers a double-wall U-tube bundle design; this configuration 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. Dimensionally it is a 12-inch shell unit, 60-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. Design ratings run to 150 PSI on the shell side, 125 PSI on the tube side, and 375°F maximum temperature. This build is designated 5-267-12-060-002. The series sees regular use in glycol-to-potable loops, process cooling where mixing cannot be tolerated, and potable water heating and cooling.