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2.4.7 Loop valve
Function of the Loop valve
The Loop valve allows the user to connect several loops simultaneously to the instrument. It can for
example be used for storing intermediate fractions in multi-step purifications, for storing samples to
be used in scouting runs, or for storing eluents needed in low volumes. The valve also has a built-in
bypass function that enables bypassing all loops. The Loop valve is labeled V9-L or V9H-L.
Location and illustration of Loop valve
The illustration below shows the recommended location, together with a detailed view of Loop valve
V9-L.
Ports and flow paths of the Loop valve
The illustration and tables below describe the ports and different flow paths through the Loop valve.
In the Position 4 example, the
loop is connected to loop posi-
tion 4 and the loop is being
emptied.
ÄKTA pure User Manual 29119969 AB 53
2 The ÄKTA pure instrument
2.4 Instrument modules
2.4.7 Loop valve