FIELD: machine building.
SUBSTANCE: invention relates to control valves, namely, to combined flow control device for use with valves for fluid medium. Flow control element for valve comprises sleeve, having first and second ends, wherein first end includes bent edge. Tip of valve shut-off element, arranged in sleeve, wherein said tip has housing and mounting surface passing from said housing, wherein said housing comprises projection, forming shoulders interacting with bent edge inner surface; insert, located in sleeve second end and interacting with valve shut-off element tip for pressing valve shut-off element tip shoulders to bent edge inner surface, wherein insert includes opening for valve stem arrangement. Projection has diameter greater than of bent edge, and bent edge diameter is greater than mounting surface diameter.
EFFECT: invention is aimed at reduction of damages and/or wear caused by scale-producing erosive process fluid media.
17 cl, 6 dwg
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