CONTROL VALVE Russian patent published in 2010 - IPC F16K1/54 F16K47/14 

FIELD: machine building.

SUBSTANCE: control valve consists of case with inlet and outlet branches and of gate and throttling grid positioned in case. The gate corresponds to a seat and a plate connected to a driving device by means of a rod. Circular channels are made in the case of the valve along perimetre of the gate seat and throttling grid. These channels are interconnected with pipeline and are communicated with radial orifices correspondingly with a cavity under the gate plate and with a cavity over the throttling grid.

EFFECT: ensuring change of flow area of throttling grid in proportion to change of flow area of gate.

1 dwg