CHECK VALVE Russian patent published in 2018 - IPC F16K15/02 

FIELD: regulating system.

SUBSTANCE: invention relates to regulating systems. Return valve comprises a casing made in the form of a cylindrical bush consisting of two stages of different diameters, interconnected by bridges, a valve seat with a working outlet channel, a spring-loaded conical disc cone with a shank. Valve seat is in a larger diameter stage. In the stage of smaller diameter, an internal cylindrical boring is made, into which the guide bush with an internal guide hole is pressed, in cross-section in the form of "chamomile". At the end of the shank a protective glass is installed, on the surface of the valve seat, a concentric groove is made on the side of the valve seat, into which the sealing element is mounted. In the valve seat itself, a concentric groove is made on the side of the valve seat, into which the sealing element is mounted. On the outer edge of the valve seat, a sharp edge is formed on the side of the valve seat to interact with the sealing element of the valve seat. On the outer edge of the valve seat, a sharp edge is formed on the side of the valve seat to interact with the sealing element of the platelike shutter.

EFFECT: invention is aimed at increasing the tightness of the return valve and the supercharging line as a whole.

1 cl, 1 dwg