SHUT-OFF DEVICE Russian patent published in 1995 - IPC

FIELD: automatic control. SUBSTANCE: shut-off device has body, diaphragm with link attached to body by cover, spring-type operating-range adjusting element, spring-loaded pushrod, and shut-off valve with valve rod, and unit for setting valve in open position. Bracket, T-0shaped lever mounted on bracket axle, and pushrod-mounted clevis are inserted between link and pushrod. Long arm of lever is tied with link and its short arms have spherical profiles with adjustable center-to-center distances between them and they are engageable with clevis plane. EFFECT: improved operating accuracy and reliability within adjusted pressure range due to reduced error brought in by friction in mechanical transmission. 2 dwg