BACK GATE Russian patent published in 2011 - IPC F16K15/03 

FIELD: machine building.

SUBSTANCE: back gate consists of case with inlet and outlet channels, of seat with disk installed in inlet channel, also, disk comes beyond its projection, of support and of disk rest. The rest is located on the seat beyond projection of the disk and has internal conic cavity. A conjugated with it finger swings on an eye ring. The eye ring is hinged both with the support and with the disk.

EFFECT: raised reliability of gate operation due to damping device preventing collision of packing fields of disk and seat at back flow of transported medium.

4 cl, 5 dwg