DESIGN OF VALVE FOR HYDRAULIC OR PNEUMATIC DRIVE Russian patent published in 2014 - IPC F16K1/46 

FIELD: machine building.

SUBSTANCE: valve design comprises a sleeve set so that to be able of travelling inside a casing. An annular sealing element is installed inside the sleeve so that to fit on the valve seat. A holding element is installed inside the sleeve and is fitted by the first connection segment. The latter is protruding in the axial direction of the sleeve and holds the sealing element between the holding element and the sleeve. At that the sleeve and the holding element are assembled as an integral unit resulting from joining the first connection element with the second connection element. The stem is connected to the central section of the sleeve. The sleeve and the holding element can travel in the direction of approaching and moving away from the valve seat due to the stem.

EFFECT: designing of a valve for a hydraulic or pneumatic drive providing for the possibility of ensuring stable sealing characteristics and allowing for the improvement of manufacturability and extension of the service life of the hydraulic or pneumatic drive.

11 cl, 10 dwg