BALL VALVE Russian patent published in 2019 - IPC F16K5/06 F16K25/00 F16J15/48 

FIELD: machine building.

SUBSTANCE: invention relates to valves and is intended for use in gas and other industries. Problem to which the claimed invention is directed, is to increase the reliability of the crane. Problem is solved by the fact that in a ball valve on the metal cage of each seat from the side of the groove there is a protrusion of cylindrical shape, the internal diameter of which is equal to the internal diameter of the saddle, and the width of the protrusion exceeds the largest gap between the body and the saddle. At the inlet and outlet openings of the housing, a cylindrical bore is made on the side of the saddles, which interacts with the outer diameter of the protrusion and has a depth equal to the height of the protrusion. In this case, a groove is made directly behind the boring, the outer diameter of which is larger than the diameter of the boring.

EFFECT: technical result is to reduce the likelihood of contamination in the gap between the seat and the body of the crane.

1 cl, 4 dwg