TWO-WAY VALVE Russian patent published in 2022 - IPC F16K1/44 F16K11/10 

FIELD: valve engineering.

SUBSTANCE: invention relates to valve engineering, in particular to the pipeline valves of power plants characterized by difficult operating conditions. The two-way valve contains a housing with axial and lateral nozzles, main and additional shut-off devices interacting with the sealing seats of the housing and kinematically connected to the outer and inner rods controlled by independent actuators. The valve is equipped with centering elements of the main shut-off device and the outer stem relative to the body, and the inner stem relative to the outer stem, fixed respectively on the outer surface of the main shut-off device, the outer stem and the inner stem. The centering elements of the main locking device and the outer stem are made in the form of ribs connected by a cylindrical shell. The centering element of the inner stem is made in the form of centering belts spaced along the length of the latter. The invention is aimed at ensuring the centering of the stems for controlling the shut-off devices and centering the shut-off devices relative to the sealing seats of the housing.

EFFECT: hydraulic characteristics are improved and the reliability of valve operation is increased.

2 cl, 3 dwg