Agilent, G1580-68000, Airtec valve solenoid with screws, used to control GSV, LSV, and other valves, used with series 6890 and 7890 gas chromatography systems

The Agilent Airtec Valve Solenoid Assembly provides pneumatic switching control for compatible Agilent 6890 and 7890 gas chromatography instruments. It is used to actuate gas sampling valves, liquid sampling valves and other valve functions configured within the GC valve-control system. The assembly includes the solenoid and its associated mounting screws; it is not the sampling valve body, injection loop or detector. In a valve-controlled GC method, correct electrical and pneumatic actuation determines when a sampling or routing valve changes state. A sticking solenoid, damaged connection or incorrect actuation can interrupt programmed switching and compromise analytical repeatability. Select the replacement by the instrument's valve-controller configuration rather than by the presence of a sampling valve alone. During maintenance, isolate instrument power and gas pressure as required by the service procedure, secure the mechanical mounting and verify the valve switching sequence after reassembly. The assembly supports restoring a valve-control function without replacing the entire chromatograph.