STOP VALVE Russian patent published in 2022 - IPC F16K17/18 F16K17/26 F16K1/12 

FIELD: valve industry.

SUBSTANCE: invention relates to the valve industry and is intended for use as a shut-off body to shut off the flow of the working medium in the pipelines of power plants. The valve contains a body with an axial and side branch pipes and a sealing seat, a shut-off element located in the side branch pipe, a stem sealed with a bellows. The locking body is made in the form of a glass, in the inner cavity of which there is a rod tip with a bellows welded to it, the upper end of which is welded to a sleeve enclosing the rod, passing through the passage section inside the sealing seat and welded to the body in the region of the side branch pipe. A thrust sleeve is fixed on the inner surface of the locking element, interacting with its end with the support disk on the rod tip, which can interact with the end face of the cup bottom.

EFFECT: creation of a shut-off valve of the kingston type of a compact design with reduced weight and size characteristics and a simplified assembly scheme due to the location of the bellows assembly, sealing the stem, in the internal cavity of the shut-off body from the side of the axial branch pipe.

2 cl, 2 dwg