Electromagnet e.g. cylindrical hub magnet, for actuating valve e.g. two by two way seat valve, has bushing provided at front surface of cone at side facing hub anchor piston and comprising flange pointing in radial direction

摘要

The electromagnet (1) has a magnetic body with a cone (12) and an actuating rod (6) that projects in a direction. The cone has a central hole (15), where a bushing (17) is provided at a front surface of the cone at a side facing a hub anchor piston (7). The bushing has a flange (21) that points in the radial direction and comprises recesses directed radially to an axis. The flange is pressed at a front wall of the cone, where the front wall is directed to the anchor piston. A pressure compensating opening (23) is arranged in a region of the recesses and close to an area of the central hole.