Wet-barrel hydrants are used in warmer climates and have horizontal compression valves at each outlet.

Wet-barrel hydrants are used in warmer climates and have horizontal compression valves at each outlet.

• A. True
• B. False
• C. They are used in freezing climates
• D. They have vertical valves

Answer: (A)

Wet-barrel hydrants are designed to be kept full of water, which makes them ready to deliver water immediately in warm climates where freezing isn’t a concern. Each outlet on a wet-barrel hydrant has its own valve, typically a compression-type valve operated by a stem, arranged so that water flow to that particular outlet can be controlled independently. The water in the barrel remains at all times, so opening an outlet simply releases water rather than waiting for the barrel to fill. This design suits warmer environments where freezing is unlikely. In contrast, hydrants used in freezing climates are dry-barrel, with the water kept out of the barrel and drained as needed, which is the key difference in suitability and operation.

Wet-barrel hydrants are designed to be kept full of water, which makes them ready to deliver water immediately in warm climates where freezing isn’t a concern. Each outlet on a wet-barrel hydrant has its own valve, typically a compression-type valve operated by a stem, arranged so that water flow to that particular outlet can be controlled independently. The water in the barrel remains at all times, so opening an outlet simply releases water rather than waiting for the barrel to fill. This design suits warmer environments where freezing is unlikely. In contrast, hydrants used in freezing climates are dry-barrel, with the water kept out of the barrel and drained as needed, which is the key difference in suitability and operation.