| 摘要 |
<p>PCT No. PCT/GB84/00338 Sec. 371 Date Jun. 6, 1985 Sec. 102(e) Date Jun. 6, 1985 PCT Filed Oct. 4, 1984 PCT Pub. No. WO85/01558 PCT Pub. Date Apr. 11, 1985.A slide valve comprises a valve body having valve ports and a slide mounted within and slidable relative to the valve body for controlling the opening, interconnection and closing of the valve ports. The slide carries a valve block forming a sealing member which is floatingly located in a recess in the slide and which includes one or more galleries to provide interconnection between two or more of the ports in one or more defined positions of the slide. The sealing member also has at least one sealing surface for sealing off one or more of the ports in one or more defined posiitons of the slide. The sealing member is urged into its sealing position solely by means of fluid pressure applied through at least one of the ports.</p> |
