TWO-WAY SHUTOFF VALVE Russian patent published in 2018 - IPC F16K1/44 F16K27/02 

FIELD: machine building.

SUBSTANCE: invention relates to the field of nuclear power machine building, and can be used in pipelines with potentially hazardous working medium, working at high parameters of the working environment and high reliability requirements, for example, in nuclear power plants. Set task is achieved due to fact that in the known two-way shut-off valve comprising the angular body with axial and lateral branch pipes and two sealing seats, interacting with the latter main and additional locking bodies, located in the internal cavity and connected to coaxially located rods and their independent drives. Main and additional locking bodies are equipped with spools, connected to coaxially located rods and placed on the axial branch pipe side opposite to the side branch pipe. Main locking body spool is connected to the tubular stem. Additional locking body spool is made in the form of cup, which depth is greater than the main locking body stroke.

EFFECT: invention is aimed at creation on the pressure source outlet axial connection mounted double-shut valve design, providing reduced mass-dimensional characteristics by using the self-sealing in the gate principle, due to, that the valve closing is performed in the direction, which coincides with the medium flow direction.

4 cl, 1 dwg