CHECK VALVE Russian patent published in 2002 - IPC

FIELD: mechanical engineering. SUBSTANCE: check valve used in high-pressure hydraulic systems has inlet and outlet pipe connections and seat with passages in between, shut-off member made in the form of flexible disk, and stabilizer made in the form of plate and used to press disk to seat; seat, shut- off member, and stabilizer are installed between pipe connections. Segmental projections are built integral with disk on ends of free surface on diametrically opposite sides. Plate has parallel working surfaces. Seat is provided with rectangular diametrical projection. Shut-off member is provided with adjacent mating surface. EFFECT: enhanced reliability; simplified design. 3 dwg