Control valve for separable connection unit for flexible pipes
AssigneeMib Italiana S.P.A.
InventorLorenzo Bormioli
Life of this patent
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Abstract
A control valve for connection unit for flexible pipes, comprising a plurality of sectors, (slices or petals), rotatable between a complete opening position and a complete closing position is described. The aforesaid plurality of rotatable sectors comprises at least two series of rotating sectors of different shape and dimensions disposed in an alternate way along the circumference of the connection unit. The smaller sectors can be controlled in such a way to close slower than the bigger ones. The shape and dimensions of the rotational sectors are such to consent a partial overlapping of the borders of the adjacent sectors for a better tightness between the sectors themselves.
Claims7
A control valve for connection unit for flexible pipes, comprising a plurality of sectors rotatable between a completely open position and a completely closed position, wherein said plurality of sectors comprises at least two series of sectors of different shape and dimensions disposed in an alternate way along the circumference of the connection unit;
- wherein the at least two series of sectors includes a series of sector of a larger size relative to the other series of sectors and series of sectors of a smaller size a relative to the other series of sectors, wherein each sector of the series of sectors of the larger size have a V-shaped extremity whose sides, when in the completely closed position, abut in a fluid tight fit manner against corresponding sides of adjacent sectors of the same series, and have lateral sides with an arched extremity that, when in the completely closed position, is leaned on by an adjacent side of a sector from the series of sectors of the smaller size that is interposed between two sectors from the series of the sectors of the larger size, and wherein each sector of the series of sectors of the smaller size have a rounded extremity that, when in the completely closed position, engages tightly with the arched extremities of two adjacent sectors from the series of sectors of the larger size, and have straight sides that, in the completely closed position, engage tight with lateral sides of the two adjacent sectors from the series of sectors of the larger size.
A control valve for connection unit of flexible pipes, comprising a plurality of petal sectors rotatable between a completely open position and a completely closed position, wherein said plurality of petal sectors comprises at least two series of sectors of different shape and dimensions disposed in an alternate way along a circumference of the connection unit;
- wherein the at least two series of sectors includes a series of sectors of a larger size relative to the other series of sectors and a series of sectors of a smaller size relative to the other series of sectors, wherein the sectors of the control valve have substantially triangular shapes of different size with bases rotatable about respective pivoting axes arranged as sides of polygonal figure perpendicular to a longitudinal axis of the connection unit.
Dependencies are inferred from the claim text.