Which statement about dry barrel fire hydrants is true?

Which statement about dry barrel fire hydrants is true?

• A. They Require Frequent Lubrication Of The Barrel
• B. They Are Designed To Keep The Hydrant From Freezing
• C. They Are Always Connected To 4 Inch Mains
• D. They Eliminate The Need For Water Pressure Testing

Answer: (B)

Dry barrel hydrants are built so that the valve and most of the water supply stay underground, keeping the above-ground barrel dry when not in use. This design prevents water from being present in the exposed portion, which is the part most exposed to freezing. When you open the hydrant, water from the underground main flows up into the hydrant to the outlets, but the important point is that the portion above ground remains dry and insulated from the cold when not operating. That’s why this type of hydrant is described as being designed to resist freezing. Lubrication needs aren’t the defining feature of these hydrants, and the requirement can vary by model and maintenance practices. Hydrants can be installed with various main sizes, not exclusively four inches. And regardless of the hydrant type, water pressure testing is still part of proper installation and maintenance practices.

Dry barrel hydrants are built so that the valve and most of the water supply stay underground, keeping the above-ground barrel dry when not in use. This design prevents water from being present in the exposed portion, which is the part most exposed to freezing. When you open the hydrant, water from the underground main flows up into the hydrant to the outlets, but the important point is that the portion above ground remains dry and insulated from the cold when not operating. That’s why this type of hydrant is described as being designed to resist freezing.

Lubrication needs aren’t the defining feature of these hydrants, and the requirement can vary by model and maintenance practices. Hydrants can be installed with various main sizes, not exclusively four inches. And regardless of the hydrant type, water pressure testing is still part of proper installation and maintenance practices.