Which statement best describes wet-barrel hydrants?

• A. They keep water in the barrel at all times
• B. They have separate valves for each outlet
• C. They are designed to drain water from the barrel
• D. They are not suitable for firefighting operations

Answer: (A)

Wet-barrel hydrants are designed to keep water in the barrel at all times. This means the water is ready at the outlets as soon as the valve is opened, allowing immediate use for firefighting. They are common in climates where freezing isn’t an issue, since the water remains in the barrel rather than being drained. The other statements don’t fit: wet-barrel hydrants usually have a single control valve for all outlets, not separate valves for each outlet; they are not designed to drain water from the barrel—quite the opposite, the barrel stays full; and they are indeed suitable for firefighting operations, not unsuitable.