Tamper-proof valve locking device

A device for locking a valve having an integrated stopper on the valve body and a valve handle with a locking hole in an open and a closed position, said valve handle being adapted to pivot about a central valve post to rotate the valve between the open and closed positions, said device comprising:

• a rigid body having a central portion and first and second arms extending outward from the central portion;
• a first hole provided in the first arm such that said first hole registers with the locking hole in the valve handle when the first arm and the valve handle are aligned to place the valve in the open position;
• a second hole provided in the second arm such that said second hole registers with the locking hole in the valve handle when the second arm and the valve handle are aligned to place the valve in the closed position;
• a third hole provided in the central portion of the rigid body, said third hole being adapted to receive the central valve post;
• and
• a notch provided in the central portion of the rigid body, said notch being sized to securely receive the integrated stopper such that the rigid body is substantially prevented from rotating in any direction in the event that a lateral force is applied to the rigid body.