CHECK VALVE Russian patent published in 2013 - IPC F16K15/03 F16K47/02 

FIELD: machine building.

SUBSTANCE: valve, and mainly check valve, includes a body in the form of a rotation body equipped with an additional side chamber having the possibility of placing a lever and a shutter in it. The body includes a valve seat, the surface of which contacts the shutter and is made in the form of a conical surface section. The shutter has outside and inside surfaces. One end of the lever is attached by means of hinges to outside convex surface of the shutter along its symmetry axis so that it can restrict the shutter movement relative to the lever. The other end of the lever is fixed on the axis inside the valve. The axis is attached to the valve body and connected to a damper. The shutter includes a plate-like elastic element providing the possibility of tight pressure of the shutter to the seat at the pre-determined medium flow inside the valve.

EFFECT: improving operating reliability and tightness of a check valve operating at high pressures under working medium high-temperature conditions.

4 cl, 5 dwg