2 connecting switching valve, Connecting switching valve, Figure 11 – Metrohm 872 Extension Module Sample Prep User Manual
Page 27: Switching valve – connectors, Figure 12, Switching valve – valve positions
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3 Installation
872 Extension Modul – Sample Prep
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19
1
2
3
4
5
6
7
Figure 11
Switching valve – connectors
1
Connector 1
2
Connector 2
3
Connector 3
4
Connector 4
5
Connector 5
6
Connector 6
7
Switching valve
Valve positions
The injection valve (11-7) can adopt two valve positions - Fill and Inject.
Switching back and forth causes two respectively different connectors to
be connected with one another. The following graphic provides a sche-
matic display of the flow paths of the two valve positions.
Figure 12
Switching valve – valve positions
Filling
In the Filling position, the connectors 2 and 3, 4
and 5, and 6 and 1 are connected with one
another.
Injecting
In the Injecting position, the connectors 1 and
2, 3 and 4, and 5 and 6 are connected with one
another.
3.8.2
Connecting switching valve
Connecting switching valve
1 Connect capillaries with 6.2744.010 PEEK pressure screws.