| 摘要 |
PURPOSE:To make control of large output flow rate possible by directly driving plural spools with electric distortion elements. CONSTITUTION:Spools 4a-4d slidable in the axial direction are provided in plural sleeves 5a-5d disposed on the concentric circle of a valve body. A flow path is connected in the valve body so as to share respective supply ports, control ports and return ports formed in the sleeves 5a-5d. And the plural spools 4a-4d are directly driven by electric distortion elements 8, 8' in which distortion is generated according to the voltage. By this construction, large output flow rate can be controlled.
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