| 摘要 |
The present invention aims to provide a directional control valve excellent in the detecting accuracy and the operational stability and having a position detecting function, wherein the magnet is prevented from directly contacting hydraulic fluid so as not to be affected by the hydraulic fluid. To achieve this, a magnet 21 is installed on an end portion of the valve member 6 received in the valve hole 5 so as to be situated at a position which is adjacent to a breathing chamber 9 and which is more exterior than an end sealing member 8 which shuts off the breathing chambers from the hydraulic fluid passages, and also a magnetic sensor 22 is installed at a position opposite to the magnet 21, in a casing 4, whereby the magnetic sensor 22 detects the magnetic flux density when the magnet 21 moves together with a spool 6, and detects all operating positions of the spool 6 during a stroke, from the change in the magnetic flux density.
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