Pipe Flow Diagram
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How to Read the Pipe Flow Diagram
This pipe flow diagram converts between flow velocity, nominal pipe diameter (DN) and volumetric flow rate, so an existing line can be checked without a calculation.
Flow Diagram Documents
The converts between flow velocity, nominal pipe diameter and volumetric flow rate. Mark the required velocity on the vertical axis, move horizontally to the DN curve of your pipe and read the flow rate below.
Reference: Engineering ToolBox — recommended flow velocities in water pipes
