VALVING-CONTROL DEVICE Russian patent published in 1997 - IPC

FIELD: valving. SUBSTANCE: device is provided with an arrester of the stroke of the slide and pressing out bearing. The springs press out the disk from the slide and are received in periphery sockets of the slide. The passageways for supplying fluid to the sockets of the slide are provided on the cylindrical projections of the sealing disk. The pressing out bearings is made up as two races with springs, provided with ways and balls, and interposed between the movable sealing disk of the slide and the seat of the outlet branch pipe to define a slot space between the valving disk in 'open' position. One of the races of the pressing out bearing is mounted on the movable disk and is provided with horizontal way. The other race is mounted on the fixed seat of the outlet branch pipe and provided with way that consists of long horizontal and short sloping portions. The springs are arrange above the sloping portions at a level of the long ways for permitting interaction with balls when the device is in 'closed' position. EFFECT: enhanced refutability. 3 cl, 6 dwg