GAS PRESSURE CONTROL VALVE Russian patent published in 2014 - IPC G05D16/00 

FIELD: machine building.

SUBSTANCE: plunger is provided as a control valve with the effective area of the plunger being equal to the area of a throttling seat, in order to improve operation precision of the valve operated in the wide flow rate range. The plunger is coupled with a setting spring and a damper by a locking ring that provides for improved reliability of interaction of movable control valve parts at abrupt change of input pressure and at vibration loads. The plunger is fitted by a channel I communicating the cavity of controlled pressure E with the sealing cavity K to reduce the deformation of sealing rings. The damper set inside the setting spring beyond the gas flow does not create gas flow disturbances at the inlet to the control valve.

EFFECT: higher stability and precision of control valve operation in wide range of gas flow rates.

1 dwg