New Mexico Pipe Fitter Journeyman (JPF) Practice Exam

Where is a globe valve most appropriately used compared to a gate valve?

1. When rapid on/off operation is required

2. For frequent operation or throttling of flow

3. In applications with high pressure

4. Where large volumes need to pass

The correct answer is: For frequent operation or throttling of flow

A globe valve is most appropriately used for frequent operation or throttling of flow because it is specifically designed to provide better control over fluid flow. The internal structure of a globe valve, which includes a movable disk and a stationary ring seat, allows for fine adjustments to the flow rate, making it ideal for applications where flow regulation is necessary. This capability makes globe valves suitable for situations where precise control is more important than simply starting or stopping the flow. In contrast, a gate valve is designed primarily for being fully open or fully closed, making it less suited for throttling purposes. While it can handle high pressure and large volumes of fluid, it is not meant for frequent operation since it can lead to wear over time if utilized for throttle control. The choice of a globe valve in this context highlights its effectiveness in regulating flow, particularly when adjustments need to be made often within a system.