Valve arrangement for controlled pressure relief of fluid-filled lines under increased safety requirements

摘要

Valve arrangement for controlled pressure relief of fluid-filled lines under increased safety requirements, comprising a drain valve group (16) which is formed from three equal valve units and connected in a 2-by-3 logic valve, which reliably opens the fluid discharge both in regular operation and in the event of a valve unit failure, with main valves, which are designed as hydraulically pilot-operated slide valves with slide valve piston (1, 18, 19), wherein the control of the main valves by a pilot valve (6, 12, 20) per main valve, characterized in that three slide valve housing (2) together with a fourth terminal housing (3, 17) are arranged rotated by 90 ° about a central axis, which thus form a rectangular arrangement together with the terminal housing (3, 17).