TPC Schematic and Symbols Practice Test 2025 – Your All-in-One Guide to Exam Mastery!

The globe valve is typically employed to control the flow rate in a piping system due to its design, which allows for precise throttling and flow regulation. The internal structure of a globe valve features a movable disk and a stationary ring seat, which provides excellent control over the flow passage. By adjusting the position of the disk, operators can finely tune the amount of fluid passing through the valve, making it ideal for applications where flow needs to be regulated or maintained at a specific rate.

In contrast, other valve types like check valves are primarily used to prevent backflow and do not provide flow control capabilities. Ball valves are designed for quick on/off operations and do not offer the same level of throttling ability. Butterfly valves are often used for regulating flow as well, but their design does not provide as precise control as a globe valve, making them less favorable for applications that require detailed adjustment of flow rate.