Thermo Orbitrap Fusion Series - Configurations; Figure 32. Divert;Inject Valve Positions

5
Syringe Pump and Divert/Inject Valve
Divert/Inject Valve
Thermo Scientific Orbitrap Fusion Series Hardware Manual 47
Figure 32. Divert/inject valve positions
Configurations
You can configure (plumb) the divert/inject valve as a loop injector (for flow injection
analysis) or as a divert valve. The divert valve can switch the solvent front, gradient endpoint,
or any portion of the LC run to waste. Figure 33 shows both of these configurations.
In the loop injector valve configuration, the valve switches between these two positions:
• Load (position 1–2)—The sample loop is isolated from the solvent stream. Solvent flow
from the LC pump enters and exits the valve through ports 5 and 6, respectively. When
you load the sample into port 2, the sample enters and exits the sample loop through
ports 1 and 4, respectively. As you overfill the sample loop, the excess sample exits the
valve through port 3 to waste.
• Inject (position 1–6)—The sample loop is open to the solvent stream. The solvent flow
from the LC pump flushes sample out of the sample loop, and then exits through port 6
into the API source.
In the divert valve configuration, the valve switches between these two positions:
• Detector (position 1–2)—Solvent flow from the LC pump enters the valve through
port 5 and exits through port 6 into the API source.
• Waste (position 1–6)—Solvent flow from the LC pump enters the valve through port 5
and exits through port 4 to waste.
3
2
1
5
4
3
2
1
5
4
6
6
Internal connection path
(light gray)
Port 1 internally switches between port 2
(position 1–2) and port 6 (position 1–6, shown).
Position 1–2 Position 1–6
Valve screw