| 摘要 |
<p>A rotary valve device for the selective connection of a pressure sensing device to any one of a number of separate pressure lines in a hydraulic control system, the selector valve comprising a cylindrical valve base with axial pressure line bores on a circle and a pressure relief bore on a larger radius, each bore having arranged therein a spring-loaded valve with a valve plunger whose protruding head cooperates with a rotatable selector disc. The selector disc, settable by means of a selector sleeve, carries a selector cam for the pressure line valves and a series of pressure relief cams for the pressure relief valve which is opened half-way between adjacent pressure line connection positions. A detent mechanism, with detent cams on the selector disc, positions the device in all pressure line connecting positions and pressure relief positions. A pressure gauge is connected to the pressure line valves via a central connecting cavity.</p> |
