CHECK VALVE Russian patent published in 1997 - IPC

FIELD: valving. SUBSTANCE: housing of the check valve is provided with seat, gate pivotally connected with a support, suspension, and stop of the gate. The surfaces of the gate that face each other and surfaces of the support are provided with counter grooves. The suspension is made up as flat shackles received in the grooves, the surface of the shackle facing the gate. The pivots of the shackles are mounted at the axis of the center of gravity of the gate. The stop is mounted on the cover and made up as a cylindric bushing having inclined supporting surface that faces the gate. EFFECT: enhanced reliability. 5 dwg