SHUTOFF VALVE Russian patent published in 2024 - IPC F16K15/03 F16K17/10 

FIELD: valve industry.

SUBSTANCE: invention relates to valve industry, in particular to disconnecting devices with a rotary shut-off element, and is intended for automatic shutoff of high-pressure pipeline in case of emergency decrease or increase of pressure in it. Cutoff valve stem has a cylindrical protrusion at the end, the retainer is made in the form of a rotary latch pressed to the cylindrical protrusion of the stem by a torsion spring, has, on the side of the cylindrical protrusion of the rod, a cavity in the form of a truncated pyramid and an angularly skewed retainer stop made with possibility of engagement with bevelled at angle support of plate at installation of plate in working position and its fixation in this position at pressure in valve housing within set operating range and disengagement with the plate thrust and return of the plate to the closed position when the pressure in the valve housing goes beyond the set operating range.

EFFECT: valve drive design provides the possibility of the plate installation into the working position and its reliable fixation in this position at pressure in the valve housing within the adjusted operating range without the presence of a mode switching handle in the drive with a minimum number of manipulations when starting the valve into operation and adjustment, as well as reliable operation and return of the plate to the closed position when the pressure in the valve housing goes beyond the set operating range.

1 cl, 4 dwg