| 摘要 |
PURPOSE:To source the correct switching operation by forming the sliding surface of a slidable valve body so as not to project into the valve aperture, in the stationary state after switching operation. CONSTITUTION:When a slidable valve piece 36 is switching-shifted by the operation of a selector valve 30, each valve diameter r1-r3 of a leading outlet 23 and the first and the second passage ports 24 and 25 and each length l1, l2 of a valve-seat surface 35 between the leading outlet 35 and the first and the second passage ports 24 and 25 are made equal. The ratio between the length L in the direction of slide of the sliding surface 37 of a slidable valve body 36 with respect to each valve opening diameter of the leading outlet 23 and passage ports 24 and 25 is 5/1. Therefore, the fluid pressure necessary for the slide of the slidable valve piece 36 can be maintained free from the inflow of the high- pressure fluid into the leading outlet 23. |
