BALL VALVE Russian patent published in 2018 - IPC F16K5/20 F16K5/06 

FIELD: armature construction.

SUBSTANCE: invention relates to pipeline armature and can be used in the construction of ball valves designed to shut off the flow of working fluid in systems of gas main and process pipelines. In a ball valve containing a housing with inlet and outlet nozzles, a ball-and-pinion stopper on the supports and two seats pressed by springs to the plug, each contains a sealing ring, and a protective metal ring pressed by the springs to the ball stopper, a metal ring that are made through and blind holes. At that the springs interacting with the saddle are installed in the through holes, and interacting with the protective ring – in the blind holes. In this case, the inserted metal ring is fixed on the protective ring.

EFFECT: invention is aimed at reducing the outer diameter of the seats.

3 cl, 5 dwg