Agilent Technologies 6850 GC, Install Manual, Page: 9 / 20

Installing Sampling Valves on an Agilent 6850 Gas Chromatograph
Installing Sampling Valves 9
Installing a Sampling Valve
The sampling valve is installed in a heated valve box on top
of the GC. See
Table 3 . The box and valve is a
factory- assembled and leak- tested unit. Installation does not
require any disassembly of the unit. See the
6850 Gas
Chromatograph User Information CD- ROM.
The valve is plumbed through an existing inlet, either
capillary or packed.
Table 3 Installing a sampling valve
Step Action Notes
1 Remove the lid top cover. a Remove vent tubing, if present.
b Remove detector cover.
c Remove 8 T-20 Torx screws.
d Remove top cover.
2 If the valve is to replace a capillary
inlet , remove the insert weldment
and split vent trap.
If the valve is to replace a packed
inlet, continue at Step 3.
a Use the inlet wrench to release the
large nut on the inlet insert weldment.
b Lift the inlet insert weldment clear of
the inlet.
Detector cover
T-20 Torx screw
(1 of 8)
Vent tubing,
if present