Which type of shutoff valve is also known for its in-line function?

The in-line valve is specifically designed for applications where it can be integrated directly into a piping system to control the flow of fluids. Its primary function allows for seamless operation without altering the flow direction, making it ideal for installations where maintaining a straight flow path is necessary. In-line valves are often operated manually or automatically to either start or stop the flow as needed, and their construction typically supports high flow efficiency.

Other types of valves, such as zone valves, tend to be used in more specialized situations like controlling flow in different sections of a heating or cooling system, and service valves are generally used for maintenance purposes. Comprehensive valves are not a standard term used in plumbing or fluid dynamics, leading to the conclusion that in-line valve is the most appropriate designation for this question.