Actuator for a fluid valve

摘要: The invention relates to an actuator for actuating a valve installed in hydraulic or compressed air system, comprising coil support which can be displaced by means of space induction magnetically conducting housing on magnetic cylinder composed permanent magnet and pole disk. is characterised that the dimensions (16) disk (17) correspond each other such way diameter front surface at least same size as circumferential neighbouring width (23) associated with exceeds lift amplitude (19). According invention, used fluidic engineering disposed (19) displaceable medium gap (24), arranged between pipe (15) surrounding has maximum whereby laminated lubricating film formed without displacing fluid.