Question

What is the advantage of Gate valve over Globe valve?

• A. It controls the flow equally well from either direction
• B. It offers less resistance to flow
• C. It can manually be closing the pipes to control the flow of water
• D. It has quicker opening and closing

Hint:

Gate valves have nearly straight flow path when fully open, so they give lower pressure drop than globe valves.

Answer 1

The Correct Option is B

Gate valves and globe valves are both used in piping systems. A gate valve works by lifting a gate out of the flow path. When a gate valve is fully open, the flow passage is almost straight. Because of this, the pressure drop across a fully open gate valve is small. So it offers less resistance to flow. A globe valve has a more tortuous flow path. The fluid changes direction inside the valve body. Because of this, globe valves have higher pressure drop and greater resistance to flow. Globe valves are better for throttling or flow regulation. Gate valves are better for fully open or fully closed service. Therefore, the advantage of gate valve over globe valve is: \[ \text{It offers less resistance to flow}. \]