Inlets and valves
6850
6850
Released: April 2004 6850 Series Gas Chromatograph Service Procedures 75
7. Install a zero dead volume (ZDV) union onto
the bare end of the direct-tube assembly
using a a 1/16-inch graphite/Vespel ferrule
supplied in this kit.
• For 320 µm columns, install part number
0100-1527
• For 530 µm columns, install part number
0100-1515
• For a 1/8-inch packed column, install the
1/8-inch to 1/16-inch ZDV reducing union
Figure 1-19. Union installed onto the direct-
tube assembly
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