Which type of valve is commonly used in non-indicating applications?

In non-indicating applications, the curb valve is commonly utilized due to its design and functionality. Curb valves are specifically designed to control water flow in service lines that connect to a building, particularly for sprinkler systems. They are typically located underground and are used to shut off or regulate the water supply as needed.

The key feature of a curb valve is that it does not have any built-in indication system to show whether it is open or closed. This absence of indication is suitable for non-indicating applications, where monitoring the valve's status visually or through an indicator is not required. Instead, these valves rely on external means, such as tools or hand-operated methods, for operation.

Understanding the intended application of each valve type helps in selecting the appropriate one for specific needs within a sprinkler system or plumbing setup. Factors like accessibility, functionality, and the necessity of indicating flow states all influence the choice of valve used in different scenarios.