Patent ID: 8851446

Claim:
A product transfer valve, comprising: a valve body having an inlet port and an outlet port; a valve stem axially moveable with respect to the valve body to open and close the valve; a cam operated mechanism for axially moving the valve stem between a valve open position and a valve closed position; a segmented collar including a plurality of circumferentially spaced elongate slots such that collar segments may move radially with respect to the valve body between a radially retracted position and a radially expanded position; a plurality of internal threads on the segmented collar for engagement with a mating thread on a fluid containing system, the internal threads movable radially inward and outward in response to axial movement of the segmented collar; a retaining collar radially outward of the segmented collar and supporting one or more torque transfer members for rotationally driving the segmented collar with the retaining collar; a safety collar axially moveable with respect to the valve body, axial movement of the safety collar away from the cam operated mechanism causing axial movement of the segmented collar; and an interference member supported on the cam operated mechanism for engaging the safety collar to prevent inadvertent radial movement of the internal threads to the radially expanded position until the cam operated mechanism is in the valve closed position.