HYDRAULIC SLIDE VALVE PROVIDED WITH A PIEZOELECTRIC WASHER

摘要

The valve has a valve (10) moving in translation between a closing position to contact with a valve seat and an opening position in which the valve is at a distance from the seat. The valve movement is controlled by a piezoelectric part (5) that is in the shape of a disc whose axis is parallel to valve`s translation axis. A needle (6) is fixed to the disk to close an opening (7) connecting high and low pressure hydraulic chambers.