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

FIELD: machine building.

SUBSTANCE: group of inventions relates to the seal for valves and valve with the ball gate. Valve comprises valve body having inlet port, outlet port and the valve internal part, which is in fluid communication with the inlet and outlet ports. Also includes the eccentric ball element installed with possibility of rotation in the valve internal part, wherein the ball outer surface element defines the sphere part, and all points on the ball element outer surface are not equidistant from the ball element natural center of rotation. Also includes located in the valve internal part and displaced towards the ball element sealing ring, wherein the sealing ring is configured to seal against the ball element. Also includes the sealing ring retaining element, movable attached in the valve body recess by means of thread, and between the sealing ring and the valve body there is a secondary leakage path. Also includes the auxiliary seal between the sealing ring and the valve body, preventing fluid medium flow through the secondary leakage path, wherein the sealing ring is configured to axial and radial movement in the valve body.

EFFECT: result is the valve reduced wear and improved closing.

21 cl, 3 dwg