| 摘要 |
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. |
