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Valves

From injection to peak recycling

Valves are ubiquitous in all liquid chromatography applications. They act like a switch and can control the flow path of the chromatography system in various ways. Therefore, valves are indispensable for eluent selection, sample injection, column selection, and fractionation as well as any switching task. KNAUER valves are designed for a wide range of chromatographic and dosing applications. Flexibility is provided by choice of different materials and sizes as well as drivers for various software packages. Valves are driven either manually or automatically through a valve drive.


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AZURA Valve Unifier VU 4.1

The new generation of valve drive

The AZURA VU 4.1 is a smart valve drive with RFID technology. It features automatic valve recognition and adjusts torque and switching speed specifically for each valve. Therefore, only one valve drive is needed regardless of the valve from analytical to preparative scale. In addition the valve drive features high precision position control and stores important GLP data like switching cycles on the valve.
The valve drive works as stand-alone device thanks to an integrated display but can also be controlled via our supported software.

  • easy valve exchange
  • automatic valve recognition
  • recording of GLP data
  • small footprint
  • easy to upgrade for existing  systems

Choose your valve application field

Valve accessories

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