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|1. (WO2015122253) FLOW PATH SWITCHING VALVE AND LIQUID CHROMATOGRAPHIC DEVICE USING SUCH VALVE|
|Applicants:||HITACHI HIGH-TECHNOLOGIES CORPORATION
|Title:||FLOW PATH SWITCHING VALVE AND LIQUID CHROMATOGRAPHIC DEVICE USING SUCH VALVE|
Provided are: a flow path switching valve that reduces the pressure load in a contact surface outer peripheral section of the flow path switching valve and inhibits friction between constituent components; and a liquid chromatographic device using the flow path switching valve. The flow path switching valve is provided with a stator having a plurality of through holes and a seal having conduction grooves for causing the through holes to conduct. The seal has a first portion present vertically beneath a region comprising at least a surface of contact with the stator, and a second portion having lower rigidity than the first portion, on the outside of the first portion. Due to this configuration, it is possible to reduce the pressure load when a flow path of a liquid is switched under high-pressure conditions, and inhibit the phenomenon of friction itself.