Which tool is specifically designed for opening and closing fire hydrants?

The hydrant wrench is specifically designed for the purpose of opening and closing fire hydrants. This tool features fittings that match the operating nuts of standard hydrants, allowing firefighters to efficiently and effectively operate the valves. It typically has a long handle to provide leverage, making it easier to turn the heavy, often stiff operating nut, especially under adverse conditions such as in emergencies or low visibility.

The Halligan bar, while a versatile hand tool used for forcible entry, does not have the specific design necessary for operating hydrants. The Hydra ram is a tool used for forcible entry and is not relevant to hydrant operation. A rubber mallet is generally used for striking without damaging surfaces and wouldn’t have the necessary fit or leverage to operate a hydrant effectively.