Control valve

摘要

The invention relates to a control valve which is electromagnetically servo-controlled and has two three-way valves which are connected in parallel, can be operated simultaneously and are located in one axis. The two three-way valves are provided with sealing means, by means of which the inlet flow connection of the control valve can be opened and closed. In the event of incorrect connection of the control valve, the complete valve including the servo controls is vented and hence made free of pressure. The control valve cannot be taken back into use until the defect which led to the incorrect connection has been rectified.