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Article No.: AWA01XA
Articlename: AZURA Valve Unifier VU 4.1

Smart valve drive with RFID-technology

Valve drive for valves V 4.1

The valve drive AZURA® Valve Unifier VU 4.1 enables automatic valve switching. Due to its rapid switching, the flow path is only interrupted for a very short time and pressure peaks are reduced to a minimum. Valves are identified via RFID technology, which guarantees an easy valve exchange of KNAUER valves. An additional feature is the easy monitoring of GLP data, which simplifies maintenance such as the exchange of a rotor seal. The display enables user-friendly standalone operation. In addition, the valve drive can be operated with software as well with an optional touch display (Mobile Control), via LAN or analog input/output, by which it can be integrated into nearly every LC system.

Valves perform many different tasks in liquid chromatofrafic systems (HPLC). They act as flow switches and control the direction of the flow in the HPLC system. Valves are indispensable for eluent selection, sample injection, column selection, fractionation, and switching tasks. KNAUER valves are also frequently used outside of HPLC - e.g. for dosing applications in the chemical industry. With KNAUER valves you are flexible regarding the choice of materials and bore sizes as well as drivers for different software packages. The AZURA VU 4.1 valve drive supports over 40 valve types for a wide range of applications.

Key Features

Technical Data

Valve details

Function Column selection, Eluent selection, Fraction collection, Injection, Sample selection, Bypass, Reverse flow
Port number depending on valve
Positions 2-position and multi-position valves supported (max. 16 pos.)


Interfaces LAN, display, terminal strip
Control Display, software, event control
Inputs Binary control; Home, Backward/Inject, Forward/Load, Start IN
Outputs Trigger out, Event


Power supply External DC 24V, 65 W
Dimensions 80 x 123 x 192 mm (W x H x D)
Weight 1.9 kg
Ambient conditions Temperature range: 4–40 °C; 39.2–104 °F
below 90 % humidity (non condensing)

Documents and more information

Certified Quality 

KNAUER is known for the quality of its products and has been certified several times. We produce high-tech laboratory instruments for research, routine analysis and production.
See all Quality certificates

In addition, we have extended documentation about all our products, including CE Declarations of Conformity.
See all CE Declarations of conformity

Innovation and quality - since 1962. Made in Germany.

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Technical data or prices are subject to change without notice. Prices may vary by country and do not include taxes, customs duties or delivery. All trademarks are the property of their respective owners.Our general terms and conditions apply: www.knauer.net/terms

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