VALVE Russian patent published in 1999 - IPC

FIELD: equipment of sanitary fittings; applicable in control of flows of working medium in water and heat supply systems. SUBSTANCE: valve has body with cover, spindle mounted in cover hole, packing, lock made in form of movable and immovable ceramic disks, and antifriction spacer. Immovable disk is attached in body. Movable disk is installed for engagement with spindle and for turning through 90 deg relative to immovable disk. Spindle cylindrical surface has circular has circular projection on the side of its lower end. Circular shoulder is made cover hole on the side of its lower plane. Projection diameter amounts up to 0.15-1.0 diameter of movable disk. To seal lock, spindle with plane of its lower end is installed directly on movable disk. Spacer is mounted in gap between circular shoulder and projection. Immovable disk has through segment-like windows. Movable disk has two respective depressions for joining in turning of through windows relative to each other. EFFECT: simplified design of valve and higher reliability of its operation. 7 cl, 7 dwg