Microleaks intercepting apparatus for avoiding and/or signalling oil leakages in hydraulic plants and for equivalent uses

摘要

A unidirectional valve (7) has channel which extends in the direction of the obturator (23) movement, which channel is to be passed through by possible microleaks in case of losses in the actuator branch (3); a considerable run of the obturator (23) in the presence of microleaks and of consequent pressure losses is thus obtained; a sensor (47) detects the obturator displacements.