| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an operation pattern switching valve which can surely prevent a miss operation of a directional switching valve at switching. Ž<P>SOLUTION: The operation pattern switching valve is provided in a hydraulic pilot line connecting a plurality of directional switching valves of a hydraulic pilot type controlling an operation of a hydraulic actuator and a plurality of remote control valves operating this directional switching valve, switches a combination pattern between the directionally switching valve and remote control valve, and has a communicating means, for communicating output side ports A1-D1 during a switching transition from switching start to switching finalization. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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