Valve lockout

A lockout device for a valve having a stem comprising:

• a generally cylindrical handle body having a cylindrical opening at its lower end of a first diameter for receiving the valve stem;
• a drive gear having a plurality of teeth, adapted to be mounted on the valve stem for rotation therewith;
• bearing means adapted to be mounted within said cylindrical opening and concentrically and rotatably supporting said drive gear;
• cylindrical locking means mounted within a cylindrical opening in the upper surface of said handle body and that is radially displaced from the axis of said body, including a key actuated center cylinder having a dog movable from a first position disengaged from the teeth of said drive gear to a second position engaging the teeth of said drive gear;
• and
• a ratchet wheel and a spring biased pawl mounted within said opening at the lower end of the handle body to prevent rotation of said valve stem when said dog is in said first position;
• whereby when said locking means dog is in said first position, the handle body is free to rotate relative to the drive gear and valve stem and in the second position is locked to said drive gear and valve stem so as to permit rotation of the handle body to effect like rotation of the drive gear, thereby opening and closing the valve.