What type of water main is an example of a large-flow system?

A velocity meter is designed to measure the flow rate of water within a pipe, making it an essential component for systems where large volumes of water need to be accurately monitored. In the context of a large-flow system, a velocity meter is crucial for tracking how much water is being distributed, especially in urban water distribution networks that require precise measurements to ensure adequate supply and manage pressure effectively.

In contrast, small bore mains and consumer service lines typically refer to smaller diameter pipes that are used for residential connections and lower volume scenarios. These do not contribute to large flow systems in the same way. Transitional mains might refer to pipes that shift from larger to smaller diameters but do not specifically pertain to measuring or handling large flows directly like a velocity meter does. Thus, the velocity meter stands out as the component specifically associated with monitoring larger flow systems.