What is a curb valve primarily used for in a sprinkler system?

A curb valve is primarily utilized to shut off the sprinkler system for repairs. This valve is typically installed in the underground water service line and allows for maintenance or repair of the sprinkler system without impacting the supply to the rest of the property. When the curb valve is closed, it prevents water from flowing into the system, ensuring the safety of workers and allowing them to perform repairs or routine maintenance without the risk of water flow.

While regulating water pressure, indicating water temperature, or connecting different water sources are also important functions in a sprinkler system, those tasks are associated with different types of valves and devices. For instance, pressure regulators manage water pressure but serve a different purpose than shutting off the entire system for repairs. Hence, the curb valve's primary role is distinctly focused on providing a means to safely discontinue water flow, making it essential for maintenance operations.