SHUTOFF VALVE Russian patent published in 2022 - IPC F16K17/22 F16K17/26 F16K31/44 

FIELD: machine building.

SUBSTANCE: disclosed is a shut-off valve comprising: a body with inlet and outlet channels, a gate closing the outlet channel, consisting of a main flap with a discharge opening and an additional blind flap configured to close the blind flap discharge opening, mechanical drive to rotate the bolt, which includes: a compression spring, an extension spring, a rod and a lever connected to the rod, and a bolt lifting assembly, which includes a handle connected to the lever, which lift and lock the bolt. At the same time in the housing with inlet and outlet channels there installed is the second gate blocking the outlet channel, consisting of the second main flap with a discharge hole and a second additional blind flap configured to close the unloading hole of the blind flap, and a corresponding second mechanical drive which rotates the second gate, which includes: a compression spring, tension spring, rod and lever connected with rod, as well as second assembly for lifting the second bolt, including handle connected with second lever, lifting and fixing the second bolt.

EFFECT: invention is aimed at increasing the reliability of the device and reducing the cost of the shutoff valve operating at simultaneous production and pumping of gas.

6 cl, 8 dwg