Agilent 1200 Series Autosampler Reference Manual 225
Introduction to the Autosampler 7
Injection-Valve
The two-position 6-port injection valve is driven by a stepper motor. Only five
of the six ports are used (port 3 is not used). A lever/slider mechanism
transfers the movement of the stepper motor to the injection valve. Two
microswitches monitor switching of the valve (bypass and mainpass end
positions).
No valve adjustments are required after replacing internal components.
Table 39 Injection-Valve Technical Data
Standard Preparative MBB™
Motor type 4V, 1.2A stepper motor 4V, 1.2A stepper motor
Seal material Vespel™ (Tefzel™
available)
PEEK
Stator material Ceramic/PEEK PEEK
Number of ports 6 6
Switching time < 150 ms < 150 ms
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