SHUTOFF VALVE Russian patent published in 2023 - IPC F16K1/12 F16K21/00 

FIELD: valve engineering.

SUBSTANCE: invention relates to valve engineering and is intended to be used as a shutoff body for blocking the flow of the working fluid in pipelines of power plants characterised by high values of pressure of the working fluid. The technical problem is solved by the shutoff body in a known shutoff valve, containing a body with inlet and outlet branch pipes and a sealing seat, a cover, and a shutoff body linked with a rod provided with a packing seal and a controlled drive, being equipped with a piston tightly sealed to the body by a seal and having a through hole connecting the cavity of the inlet branch pipe to the discharge chamber made in the inner cavity of the body between the piston of the shutoff body and the cover.

EFFECT: creation of a shutoff valve used to reduce the estimated gate sealing force required to supply the working fluid under the spool, especially under high pressure values.

1 cl, 2 dwg