What is the function of an auxiliary valve?

An auxiliary valve serves a crucial role in managing the flow of water within a utility system, particularly at critical junctions, such as where the water supply meets the street main. This type of valve is specifically designed to shut off or control the water flow, ensuring that maintenance can be performed safely or that service can be interrupted without affecting the overall system. The ability to shut off the water flow at the street level allows for efficient handling of leaks, repairs, or system upgrades without necessitating a complete shutdown of the water supply to a larger area.

Options that focus on increasing pressure, gauging water usage, or expanding pipe size do not align with the primary function of an auxiliary valve, which emphasizes control over water flow rather than altering system pressure or size.