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.
VU 4.1 with 6 Port 2-position valve (AVC28AC)
VU 4.1 with 6 Port 2-position valve (AVC28AC)
VU 4.1 with 6 Port 2-position valve (AVC28AC)
One valve drive for all valves
Ultra fast switching cycle
Easy maintenance
Compact
Multiple interfaces and drivers available
| 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) |
Mounting bracket AZURA® L for AZURA® Valve Unifier VU 4.1, AZURA® Conductivity monitor CM 2.1S, AZURA® Degasser DG 2.1S or AZURA® UV detector UVD 2.1S on AZURA® L devices
Article No.: A9854-3
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Assistant module VU 4.1 for valves V 4.1
Article No.: AWA04
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In addition, we have extended documentation about all our products, including CE Declarations of Conformity.
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