Coupling safety apparatus for a lever activated valve

A method of preventing a cam lock having coupling ears from being unsafely uncoupled from a lever activated rotary motion valve having a tubular outlet to which a hose is coupled, a valve member and a lever secured to the valve member which pivots about a first pivot axis, in a plane, between a lever open pivotal position and a lever closed pivotal position to move the valve member between a valve open and valve closed position, comprising:

• providing a support having a clamp;
• clamping the clamp onto the tubular outlet of the lever activated valve downstream of the valve member;
• pivotally mounting a shroud to the support about a second pivot axis downstream of the first pivot axis for movement between an operative position overlying the tubular outlet to prevent access to cam lock coupling ears and an inoperative position spaced from the tubular outlet enabling access to the cam lock coupling ears, the shroud having a lever cradle;
• attaching ears of a cam lock coupling to the tubular outlet;
• pivoting the shroud to the operative position overlying the tubular outlet to prevent access to cam lock coupling ears;
• and
• pivoting the lever to move the valve member to the valve open position, the lever engaging the shroud so that the shroud is prevented from pivotal movement away from the operative position by the lever to prevent access to the cam lock coupling ears as long as the valve member remains pivoted to maintain the valve member in the valve open position.