Alternate column regeneration with a 10 port valve

Two position valve application
(Non-Java)

When columns must be regenerated following each analysis, this technique permits automation of the process. While one column performs the analysis, the second column undergoes regeneration by use of an auxiliary pump. Once the first analysis is complete, the valve is switched and the regenerated column is now ready for analytical use.

Further reference

More applications with two position valves
Valco injectors and valves
Cheminert injectors and valves