VALVE WITH PARALLEL GATE VALVE AND OPERATING METHOD OF VALVE WITH PARALLEL GATE VALVE Russian patent published in 2019 - IPC F16K3/14 F16K3/316 

FIELD: machine building.

SUBSTANCE: embodiments of the present invention relate to valves having translationally movable obturators. Valve with parallel gate valve comprises valve stem attached to the seal and made with possibility of the shutter movement in relation to the valve body between the open position and the closed position; valve body comprising an inner surface, wherein the inner surface portion forms at least one recessed groove having a longitudinal axis oriented substantially perpendicular to the flow direction along the fluid flow path through the valve body, wherein at least one recessed groove has a first width near the first end proximate the fluid flow path and a second width at the second end away from the fluid flow path, wherein second width is smaller than first width; obturator attached to the valve stem, comprising a first generally flat element, a second generally flat element and a pressing member between the first generally flat element and the second generally flat element, wherein the first generally flat element is oriented substantially parallel to the second flat element as a whole, wherein the obturator comprises at least one guide rail comprising a portion of the first generally flat element, and a second generally flat element protruding from and perpendicular to the fluid flow path into at least one recessed groove in the valve body, and configured to move at least partially within the at least one recessed groove, when the obturator progressively moves from the closed position to the open position; wherein the obturator is translatable from the first end of the at least one recessed groove to the second end of the at least one recessed groove, as the obturator moves from the closed position to the open position.

EFFECT: thus, costs for removal and repair of damaged valves (including downtime) can be reduced.

16 cl, 4 dwg