Which water meter type is designed to be inserted into a pipe to measure flow?

• A. Velocity
• B. Insertion
• C. Proportional
• D. Venturi

Answer: (B)

The key idea is the installation method. An insertion water meter is built to be placed into the pipe through a small tapping, with the sensing element inside the flow. This lets you measure flow without cutting out a section of pipe or installing a full-bore meter, which is especially useful for retrofit in existing pipelines or large-diameter lines. The other terms describe either different measurement principles (like measuring flow via a pressure drop in a Venturi or measuring velocity) or a different concept of output, not the method of installation. So the option that matches “designed to be inserted into a pipe” is the insertion type.