Overview
A Venturi Tube is a device used to measure the flow of liquids or gases by reducing the cross-sectional area of the passage. As the fluid enters the narrow throat, its velocity increases while the pressure decreases. This pressure difference makes it possible to calculate the flow rate accurately.
Materials and Production
Venturi Tubes are usually manufactured from stainless steel or carbon steel, depending on the operating environment. Stainless steel offers good resistance to corrosion, while carbon steel provides durability at a lower cost. During production, the throat and converging sections are precisely machined to strict tolerances. Skilled brazing or welding techniques are often required to ensure strong and reliable joints.
Functional Benefits
Compared with other flow-measurement devices, Venturi Tubes create lower permanent pressure loss, which reduces energy consumption in pipelines. They also provide high measurement accuracy and good long-term stability. Because of their robust structure, they perform well in demanding applications such as power generation, chemical processing, and aerospace systems.
Maintenance and Repair
To maintain reliable performance, the throat and flow sections must be inspected regularly. Surface wear, erosion, or deposits can affect accuracy and should be corrected through polishing or re-machining. Welded connections need to be checked for cracks or leakage. When damage is beyond repair, replacement of the throat section or the complete assembly ensures safe and efficient operation.
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