What type of valves are globe valves primarily used for?

Globe valves are primarily designed for regulating flow and pressure in a piping system. Their internal design allows for the flow of fluid to be adjusted by changing the position of the valve disc relative to the seat. This functionality makes them particularly effective for applications where precise control over the flow rate is necessary. The shape of the globe valve, with its spherical body and a movable disc, facilitates efficient throttling, allowing operators to achieve the exact flow requirement.

While globe valves can be used for on/off control, their key feature is their ability to accurately regulate flow, making option B the correct choice. Immediate shut-off and drainage purposes typically involve other types of valves that are specifically designed for those functions, such as ball valves for instant shut-off or gate valves for straightforward on/off applications without flow regulation. Therefore, their use is distinct in focus, emphasizing flow and pressure management rather than just controlling the total flow or serving utility purposes like drainage.