Which type of valve is commonly used to control flow without significant pressure loss?

The ball valve is known for its efficient flow control characteristics, making it ideal for applications where minimal pressure loss is crucial. Its design features a spherical closure element, or "ball," that rotates within the valve body. When the valve is fully open, the ball allows fluid to flow through with very little resistance, resulting in negligible pressure drop. This feature is particularly beneficial in processes where maintaining system pressure is critical.

Ball valves also provide a quick and reliable shut-off capability, which makes them versatile for ending flow quickly when needed. Their robust construction allows them to handle high flow rates without causing turbulence, which helps maintain the integrity of the system and the quality of the fluid being transported.

Other types of valves, such as globe valves and gate valves, typically exhibit higher pressure losses due to their internal designs, which may create obstructions or increased turbulence in the flow path. Check valves are designed primarily for preventing backflow rather than controlling flow in a manner that minimizes pressure loss. Therefore, the ball valve stands out as the most suitable choice for applications emphasizing flow control while minimizing pressure impact.