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2.4.3 Valves, overview
General design and function of rotary valves
The valves of the ÄKTA pure instrument allow flexibility in the liquid flow path.
All valves used in the ÄKTA pure instrument are rotary valves. The motorized rotary valve consists of
a Valve connection block with a number of defined bores with channels to the inlet and outlet ports
of the valve. The Rotary disc, mounted on the motor, has a number of defined channels. The pattern
of channels of the Rotary disc together with the pattern and location of the ports of the Valve connection
block, define the flow path and function of each type of valve. When the Rotary disc turns, the flow
path in the valve changes.
Illustration of inlet valve components
The illustration below shows the components of a disassembled Inlet valve A or a disassembled Inlet
valve B.
Inlet valve AB is built up by the same parts but have another configuration of defined bores.
Description Part
Valve connection block (stator) 1
Rotary disc (rotor) 2
Defined channel(s) in the Rotary disc 3
Defined bores in the Valve connection block 4
Inlet and outlet ports are not visible in the picture. They are located on the opposite side of the
Valve connection block.
Note:
ÄKTA pure User Manual 29119969 AB 39
2 The ÄKTA pure instrument
2.4 Instrument modules
2.4.3 Valves, overview