SPLITTING DEVICE FOR PIPING Russian patent published in 2019 - IPC F16K3/02 F16K3/36 F16K39/04 

FIELD: valve production.

SUBSTANCE: invention relates to a valve and can be used as a shut-off valve on pipelines of nuclear power plants, thermal power plants, main oil and gas pipelines. In the pipeline shut-off device, a decrease in the intensity of wear of the mating flat working surfaces of the lifting gate and sealing seats is achieved by that in the zone of interface of the working surfaces of the lifting gate and sealing seats of the inlet and outlet nozzles, the working medium, acting as lubricant, is supplied under pressure.

EFFECT: decrease in the intensity of wear of the mating flat working surfaces of the lifting gate and sealing seats.

1 cl, 3 dwg