VALVE Russian patent published in 2015 - IPC F16K5/06 F16K5/20 

FIELD: machine building.

SUBSTANCE: valve contains body with coaxial input and output holes, two seats with sealing cone surface, shutdown element in form of two separate segments with sealing spherical surfaces. The segments are arranged with eccentricity to opposite sides relatively to axis of the input and output holes of the body. Each segment has inserted interfaced elements in form of the spring bushing and cylindrical bushing with key slot interacting during rotation with spindle tail and shaft with key respectively. Each segment connection with shaft ensures coaxial location of sealing surfaces of segments and seats. The spring bushings ensure rotation of segments until coincidence of their sealing spherical surfaces with cone surfaces of seats and additional pressing. Lines of the spindle tail contact with spring bushings coincide with axis of the sealing surfaces of seats.

EFFECT: increased double-side sealing of valve at the gayer closing end due to additional pressing of each segment to the seat.

2 cl, 3 dwg