BALL VALVE Russian patent published in 2020 - IPC F16K5/06 F16K5/20 

FIELD: shutoff valves.

SUBSTANCE: invention relates to shutoff valves and can be used in gas and other industries. Technical problem, solution of which is the proposed invention is expansion of operating pressure range of ball valve (2.0÷10 MPa). Technical problem is solved by the fact that ball valve containing housing with inlet and outlet holes, in which there is ball plug with through hole, driven by spindle, and two seats contacting the valve body and the ball plug, two bushings are installed, installed on the seats with a gap. At the same time bushings interact with crane body through threaded joints, and with seats – through ledges made on ends of saddles contacting with valve body. Note here that seat ledges are arranged in bores made on bush inner surface while bore inner surfaces have bores accommodating casing ledges made at inlet and outlet and directed inside said case.

EFFECT: technical result consists in elastic deformation of seat at high pressure bypass in crane body.

1 cl, 2 dwg