| 摘要 |
PURPOSE:To perform a stable operation without producing an intermediate stop phenomenon, by forming a low pressure fluid passage in a slide valve, interconnecting it in sliding on a body inner wall, in a deviated position toward its movement. CONSTITUTION:A low pressure fluid passage 3'a interconnected to either of a low pressure fluid outlet pipe 7 or a select passage pipe 8 or 9 is formed in a slide valve 3'. This low pressure fluid passage 3'a is formed in an unbalanced position in a moving direction, namely, a deviated position in a longitudinal direction. Therefore, pressure balance at both sides of the slide valve 3' due to a bypass phenomenon is in no case produced whereby it comes into a state of being unbalanced by dint of dynamic pressure in a fluid. As a result, an intermediate stop phenomenon is thoretically preventable. |
