BALL COCK Russian patent published in 1995 - IPC

FIELD: valving. SUBSTANCE: relief valve is incorporated in the pipe line for control fluid. The seat of the valve is mounted on the housing and flowing opening is connected to the discharging passage. A bushing is rigidly secured by its one end opposite to the valve inside the housing. The valve has an electromagnetic drive. A rotatable valving member is split and consists of two hollow identical parts of a sphere which are interact with the driving shaft through a key rigidly secured to it and the free end of the bushing. The parts of the sphere define a chamber of varying volume. The chamber is in communication with the inlet branch pipe through the delivery opening made in one of the parts and to the outlet branch pipe through bushing opening, flowing opening of the valve, and discharging passage. Both parts of the sphere are mounted for permitting arrested movement in the axial direction. The flowing opening of the valve and bushing opening are axially alined. EFFECT: enhanced reliability. 2 cl, 2 dwg