About Valves - Agilent Technologies 7890 Series Advanced Operation Manual

6
Valves

About Valves

214
Valves may be used to alter the usual inlet/column/detector
flow path in the GC. Sampling valves can replace the inlet,
switching valves can select columns, multiposition valves,
used in conjunction with sampling valves, can perform the
same functions for sample streams that an ALS performs for
liquid samples.
Advanced Operation Manual