Routine Maintenance: General
Maintaining a sampling valve (diaphragm type)
Released: March 2004 6850 Series II GC User Information page 107 of 256
4. Loosen the two valve box cover thumb screws and lift the cover off.
5. Remove the two screws and washers that hold down the valve sample loop
and the carrier gas inlet line.
6. Loosen the sample loop’s two 1/4-inch fittings on the valve head and lift
the loop away from the instrument.
Loosen
Center screw
Valve sample loop
Remove screws
and washers
(2 places)
Carrier gas
inlet line