| 摘要 |
PURPOSE:To simplify inching operation by interconnecting an inflow passage of a selector valve to a tank passage via an interconnecting passage and a throttle passage formed in a spool. CONSTITUTION:An interconnecting hole 31 is formed in a spool 20 along its axis, while this interconnecting hole 31 is opened to an outer circumferential surface of the spool 20 via an intake passage 32, and this intake passage 32 is interconnected to an inflow passage 29 when the spool 20 is in a neutral position and within the minute moving range, while each of orifices 33, 34 is formed at both ends of the interconnecting hole 31, and then notches 35, 36 are formed in each opening end of these orifices 33, 34. With this constitution, since discharged oil of a pump P is bled off at the time of minute flow control, inching operation becomes simplified. |
