Bleeder valves are used for what specific purpose?

Bleeder valves serve a crucial purpose in maintaining the integrity and functionality of a dry supply line. They are specifically designed to vent air from these lines, ensuring that the system remains water-tight and effective for its intended use.

In a dry supply line, the presence of air can create a number of issues, such as air locks or reduced flow efficiency. By venting air through bleeder valves, operators can facilitate a smoother operation, allowing water to flow freely when needed. This is critical in scenarios where water needs to be supplied quickly, such as during firefighting or emergency response situations.

The other options, while they may pertain to water systems, do not specifically describe the function of bleeder valves. For instance, while releasing excess water might seem relevant, it is not the primary role of a bleeder valve. Control of water temperature and measurement of water flow pertain to different devices and systems entirely. Understanding the precise use of bleeder valves will aid in effectively managing mobile water supply systems.