Comparison Table between Valve Size (DN) and Pipe Diameter

As we all know, there is an inevitable connection between the diameter of the valve and the size of the pipeline. Generally speaking, the diameter (outer diameter) matches the valve. The valve diameter needs to be calculated according to the actual parameters. Generally speaking, the pipeline will be larger, but the actual valve will be smaller, which mainly depends on the flow rate to be controlled by the valve position, while the pipeline size only needs to have enough circulation capacity.

1. Comparison table between pipe size and valve size and inch:
2. Valve size DN (nominal diameter) corresponding to the pipe outer diameter ф (mm):