Patent ID: 7637281

Claim:
A pilot controlled pulse valve, comprising a principal valve which is able to be fluid actuated by a pilot valve means and which possesses a valve spool able to be switched over between two terminal positions by pulsed fluid actuation in a valve spool socket defined in a valve housing, wherein holding means being associated to at least one axial terminal portion of the valve spool for releasable latching of the valve spool with regard to the valve housing when in a terminal position and not axially fluid-actuated, wherein the latching means include a permanent magnet means arranged in a fixed manner in relation to the housing and in an axial extension of the valve spool, said latching means being adapted to retain the valve spool, when same has assumed the associated terminal position, by magnetic force, the valve spool in this magnetically latched terminal position being arranged at an axial distance, not bridged over by ferromagnetic material, from the permanent magnet means, such distance being set by an abutment means, which is axially arranged between the permanent magnet means and the valve spool to cooperate with the adjacent end side of the valve spool, such abutment means being supported in relation to the housing in a manner independently of the permanent magnet means.