VALVE SEAT RING RESTRICTING FLOW IN PRESSURE CONTROLS Russian patent published in 2012 - IPC F16K1/42 

FIELD: machine building.

SUBSTANCE: body forms a channel for fluid medium, in which a seat ring is located. Actuator is connected to the valve body and equipped with control component having the possibility of being offset relative to the seat ring in order to adjust the fluid medium flow passing through the above channel. Control component includes a sealing disc having the possibility of tight contact with the seat ring and the possibility of shutting off the channel. Seat ring is equipped with the hole located in the above channel so that it can prevent perpendicular collision at least of some part of fluid medium flow with the sealing disc.

EFFECT: increasing the durability of control device owing to preventing the direct collision of fluid medium with the seating surface of control component.

27 cl, 6 dwg