| 摘要 |
PROBLEM TO BE SOLVED: To provide a pilot valve capable of changing the operating resistance of an operating lever into a heavy or light state corresponding to the load pressure of a hydraulic actuator. SOLUTION: A pressure receiving chamber 32 having a pressure receiving surface for leading in control pressure to press a piston upward is formed between the piston 11 and a sleeve 14. The control pressure is controlled based on a detection signal corresponding to the operating situation of a working machine. The operating resistance applied to the operating lever 2 from the piston 11 can be optionally adjusted by the control pressure. COPYRIGHT: (C)2007,JPO&INPIT
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