GATE VALVE Russian patent published in 2024 - IPC F16K3/02 F16K27/04 F16K37/00 

FIELD: pipelines.

SUBSTANCE: invention relates to pipeline valves. In the proposed slide gate valve, the sealing circuit of the gate, seats and fastening threaded flanges is created by separate sealing elements. Two of which are located on end surfaces of seats, with direct contact with progressively moving gate. Another two create an axial force of pressing the seat and at the same time primary sealing of through holes from the inner cavity of the body and the external medium. Two more are located on the outer diameter of the seats mating with the through hole. Disk position indicator made of antifriction plastic which does not require lubrication during the whole service life, when moving along the thread in the axial direction, the pins of the threaded cover of the gate valve with indicators "O": open and "C": closed are kept from turning.

EFFECT: invention is aimed at simplifying the design of the bearing assembly of the drive for moving the gate, and as a result, reducing the manufacturing labour intensity and cost of the gate valve, improved reparability in field conditions without complete disassembly of the gate valve, increased reliability of the shut-off group, increased stiffness of the gate position indicator.

1 cl, 4 dwg