BALL COCK Russian patent published in 2018 - IPC F16K5/06 F16K5/08 

FIELD: machine engineering.

SUBSTANCE: in a ball cock comprising a body with inlet and outlet holes, in which there is a ball plug with a through hole driven by a rod, and a seat made of polyurethane, interacting with spherical surface of the ball plug, rings are tightly fixed on the ball plug, the rings are made of polyurethane antifriction material and have a spherical surface interacting with seats. Center of the spherical surface of rings coincides with the center of spherical surface of the ball plug, and the diameter of the rings spherical surface is larger than the diameter of spherical surface of the ball plug. Centers of rings are aligned with axis passing through the center of the spherical surface of the ball plug and perpendicular to the plane, passing through the axis of the through hole of the ball plug and the axis of the rod.

EFFECT: elimination of polyurethane seat adhesion to the spherical surface of the ball plug, which reduces and stabilises the torque required to control the cock, which increases the reliability of the ball cock operation.

2 dwg