PRESSURE-RECEIVING PROFILE OF BALANCE CHANNEL FOR IMPROVING THROUGHPUT CHARACTERISTICS Russian patent published in 2018 - IPC G05D16/06 G05D16/10 F16K1/36 F16K17/22 F16K31/126 

FIELD: machine engineering.

SUBSTANCE: fluid control device comprises a control valve having an inlet, an outlet, and a valve passage located therebetween. A drive is connected to a control valve and comprises a valve disc which is displaced along the longitudinal axis to open and close the fluid control device. The valve disc comprises a sealing surface adjacent to the outer radial edge of the valve disc, and the sealing surface is made with ait-tight sealing against the valve channel in the closed position. The valve disc has a median surface located inside the sealing surface in which a groove or projection is formed. The groove extends along the groove axis running along the midian surface perpendicular to the longitudinal axis, and the axis of the groove is curved when viewed along the longitudinal axis. The projection extends along the longitudinal axis to the valve channel. The valve disc contains a disc passage laying longitudinally therethrough. The first end of the disc passage is adjacent to the middle surface between the sealing surface and the groove or projection.

EFFECT: adjustment of the controller throughput is improved.

22 cl, 7 dwg