SAFETY LOCK FOR A GATE VALVE

摘要

There is provided a safety lock for a hose connector and valve on a flow line having an anchor that is in a fixed position relative to the valve, a movable body movably attached to the anchor, and a shroud and an actuator blocking member carried by the movable body. The shroud is sized and positioned on the movable body to limit access to the hose connector when the movable body is in a first position, and to permit access to the hose connector when the movable body is in a second position. The actuator blocking member is sized and positioned on the movable body to prevent the valve actuator from moving from a second to a first position when the movable body is in the second position, and to permit movement of the actuator when the movable body is in the first position.

主权项

1. A safety lock for a hose connector and valve on a flow line, the valve comprising an actuator that moves between a first position and a second position as the valve moves between an open position and a closed position, respectively, the safety lock comprising:
an anchor that is in a fixed position relative to the valve; a movable body movably attached to the anchor, the anchor permitting lateral movement of the movable body in an axial direction of the fluid line between an extended position and a retracted position; a shroud and an actuator blocking member carried by and movable laterally with the movable body, wherein:
the shroud is sized and positioned on the movable body to limit access to the hose connector when the movable body is in the first position and to permit access to the hose connector when the movable body is in the second position; andthe actuator blocking member is sized and positioned on the movable body to prevent the actuator from moving from the second position to the first position when the movable body is in the second position, and to permit movement of the actuator when the movable body is in the first position.