Valve security device

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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Details

F16K 35/10 (2006.01) F16K 35/06 (2006.01)

Patent

CA 2553346

A valve security device for releasably securing a fluid flow valve in an inoperable position including an inner body adapted to be disposed about the valve actuator such that rotation of the inner body effects corresponding rotation of the actuator to open and close the valve and an outer body rotatably mounted about the inner body. A valve cap defining a secondary actuator is mounted on the outer body. An operating pin assembly is carried by the outer body which, in an extended position, operatively couples the outer body to the inner body such that the valve can be controlled by the secondary actuator. In a retracted position, the pin assembly uncouples the outer and inner bodies such that the outer body is freely rotatable on the inner body. A lock secures the operating pin assembly in the retracted position thereby releasably securing the valve in an inoperable position.

La présente invention concerne un dispositif de sécurité à valve permettant de bloquer de manière amovible une valve de commande de débit fluidique dans une position inactive. Ce dispositif comprend un corps interne conçu pour être placé autour de l'actionneur de valve de manière que la rotation du corps interne induise une rotation correspondante de l'actionneur pour ouvrir et fermer la valve, ainsi qu'un corps externe monté rotatif autour du corps interne. Un capuchon de valve définissant un actionneur secondaire est monté sur le corps externe. Un ensemble tige de manoeuvre est porté par le corps externe et permet, en position étirée, de coupler de manière fonctionnelle le corps externe au corps interne, de façon que l'actionneur secondaire puisse commander la valve. En position rétractée, l'ensemble tige désaccouple le corps externe et le corps interne, de manière que le corps externe soit librement rotatif sur le corps interne. Un verrou bloque l'ensemble tige de manoeuvre en position rétractée, bloquant ainsi la valve de manière amovible dans une position inactive.

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