Which valve is considered the poorer choice for throttling when comparing a globe valve to a gate valve?

The gate valve is considered the poorer choice for throttling because it is designed primarily for full flow applications where it either remains fully open or fully closed. The gate valve allows the fluid to flow in a straight line, with minimal resistance when fully open, making it efficient for isolation purposes rather than controlling flow. When partially opened, gate valves do not provide effective flow regulation and can lead to issues such as vibration, noise, and erosion.

In contrast, globe valves are specifically designed for throttling applications. Their internal design allows for better control over fluid flow, making them more suitable for scenarios where it’s necessary to adjust the flow rate. The disc in a globe valve moves perpendicular to the flow path, which provides a more significant area for flow adjustment and allows for more precise control.

Choosing a gate valve for throttling could lead to inefficient operation, whereas globe valves are intended for such purposes. This distinction is crucial for maintaining system performance and preventing potential damage or inefficiency in high-pressure environments.