What is the difference between a globe valve and a gate valve?

• A. Globe valve is used for on/off isolation; gate valve for throttling.
• B. Globe valve is for tight shutoff with minimal throttling.
• C. Gate valve offers throttling control; globe valve does not.
• D. Globe valve is for throttling and precise control; gate valve is for on/off isolation with minimal pressure drop.

Answer: (D)

Globe valves are built to regulate flow. Their design places a movable disc against a seating surface, creating a variable gap as you turn the stem. This produces a relatively long, controllable flow path, so small stem movements yield significant and gradual changes in flow rate. That makes globe valves well suited for throttling and precise control of how much fluid passes through.

Gate valves, on the other hand, are meant to fully open or fully close. A gate (or wedge) moves straight up and clears the flow path, giving a wide-open passage with minimal resistance. While this means very little pressure drop when fully open, it doesn’t lend itself to fine control—small position changes don’t translate into proportional flow changes, so they’re not ideal for throttling. They’re best for isolating the line.

So the difference is that throttling and precise control is a hallmark of globe valves, while on/off isolation with low pressure drop when fully open is the strength of gate valves.