5-267-08-060-002

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. Its envelope centers on a 8-inch diameter shell, 60-inch shell length in a 4-pass arrangement. It carries 3/4-inch O.D. tubes. As furnished, materials include 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. The series sees regular use in domestic water systems under double-wall codes, glycol-to-potable loops, and process cooling where mixing cannot be tolerated. This build is designated 5-267-08-060-002.