FIELD: machine building.
SUBSTANCE: proposed device comprises valve body defining valve inlet and outlet, valve opening made between said inlet and outlet, valve disc arranged in vale body to displace between open position and closed position for control over fluid flow through valve body. Note here that valve disc has sealing surface to get in contact with valve opening when disc is closed. Besides, it comprises cylindrical element articulated with valve disc edges to extend above said sealing surface to direct fluid flow from valve opening to valve outlet.
EFFECT: reduced pressure drop.
23 cl, 7 dwg
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