Secure fire hydrant cap

A security device for a threaded element wherein the threaded element is a control device or a port for a fluid passageway, the security device comprising:

• an inner body configured to engage the threaded element;
• a pin operatively engaging the inner body and movable between an extended position and a retracted position wherein the pin is normally biased to the extended position,
• a lock plug disposed in the securing device displacing the pin from its normal biased extended position to maintain the security device in a secured configuration, and
• an outer body operatively coupled to the inner body,
• wherein the outer body moves relative to the inner body when the pin is disposed in the retracted position and the outer body and the inner body are operatively coupled for simultaneous movement when the pin is disposed in the extended position.

A security device for a threaded element, the security device comprising:

• an inner body configured to engage the threaded element;
• a pin operatively engaging the inner body and movable between an extended position and a retracted position wherein the pin is normally biased to the extended position,
• an outer body operatively coupled to the inner body;
• and
• a locking structure adapted to operatively engage the outer body and the pin, the locking structure displacing the pin from its normal biased extended position to maintain the security device in a secured configuration
• wherein the outer body moves relative to the inner body when the locking structure engages the pin so that the pin is disposed in the retracted position and the outer body and the inner body are operatively coupled for simultaneous movement when the locking structure does not engage the pin such that the pin is disposed in the extended position.