Refurbished Shimadzu FCV-14AH column switching valve to fully automate your HPLC analysis. Column switching valve housing 7-port, 6-position high pressure valve. Used for automatic multi-column switching (2 valves required). Teamed with a second FCV-14AH unit to perform automatic multi-column switching of up to 6 columns. Please contact us for complete Shimadzu HPLC unit, warranty and service contract details.