120 Agilent 1290 Infinity Binary Pump User Manual
9 Maintenance
Replacing the Inlet valve
Replacing the Inlet valve
When If Inlet valve is defective.
Tools required p/n Description
Wrench, 14 mm
G4220-20012 Torque wrench 2 – 25 Nm
Parts required p/n Description
G4220-60022 Inlet valve
(primary pump head)
Potential damage of inlet valve
Overtightening the valve will damage it, a lower torque will create leaks.
➔ Use a torque wrench (10 Nm) for fixing the inlet valve.
1 Close the shut off valves to avoid solvent leaks. 2 Unscrew the tubing at the inlet valve.
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