Are needle valves used for precise fluid control?

Needle valves are indeed designed for precise fluid control, making the assertion true. These valves feature a slender, tapered needle that can be adjusted to various openings, allowing for fine tuning of flow rates. This design enables the operator to make small, incremental changes to the flow, which is especially beneficial in applications where accurate regulation of fluid dynamics is critical, such as in laboratory experiments, fuel supply lines, and various industrial processes.

The ability of needle valves to provide such precision stems from their construction, which allows for a greater range of motion and control than many other types of valves. This characteristic makes them more suited for applications where maintaining specific pressure or flow rates is essential, contrasting with other valves that may be better for on/off control rather than fine adjustment.