Divert Valve Positions; Injection Valve Operation; Figure 5. Divert Valve Positions - Thermo Scientific LTQ Series Hardware Manual

Divert Valve Positions

Injection Valve Operation

Thermo Scientific
When the divert/inject valve is set up for divert valve operation, pressing the divert/inject
valve button switches the LC flow between the mass spectrometer and the waste container.
The Detector and Waste LEDs indicate the position of the valve.
Use the divert/inject valve to divert the solvent flow between the mass spectrometer and the
waste container (Figure 5). The divert valve has two positions:
• Detector position—Solvent flow from the LC pump enters the valve through port 2 and
exits through port 3 to the union tee.
• Waste position—Solvent flow from the LC pump enters the valve through port 2 and
exits through port 1 to the waste container.
Figure 5. Divert valve positions
To union tee/detector
3
4
5
Plug
6
(Optional)
Detector position
In the loop injection configuration
between load and inject modes. The injector valve has two positions:
• Load position—The injected sample enters the valve through port 5 and exits the sample
loop through ports 4 and 1, respectively. As you overfill the sample loop, the sample
solution exits the valve through port 6. Solvent flow from the LC pump enters and exits
the valve through ports 2 and 3, respectively.
• Inject position—After you fill the sample loop, press the blue button above the injection
valve or use the controls available in Tune Plus. Solvent flow from the LC pump
backflushes sample out of the sample loop and then out of the valve through port 3
toward the detector.
To union tee/detector
From
LC
2 4
1 5
Plug
(Optional)
To waste
(Figure 6), use the divert/inject valve button to switch
2
Functional Description
From
3
LC
2
1
6
To waste
Waste position
LTQ Series Hardware Manual
Divert/Inject Valve
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