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Pipe diameter for 50 m³/h of water

From the flow rate and allowed velocity the calculator selects the internal diameter and the nearest standard DN.

Parameters

Result

Approximate calculation using a simplified model: for designing equipment and process modes, consult a technologist.

Calculation example

Flow rate
50
Flow unit
m³/h
Medium
Water
Section length
80 m
Calculated inner diameter
108,6 mm
Nearest nominal size DN (not smaller)
125 mm
Inner diameter of the DN pipe
125 mm
Recommended velocity
1,50 m/s
Actual velocity in the DN pipe
1,13 m/s
Reynolds number
141 471
Pressure loss over the section
0,068 bar

Frequently asked questions

What water velocity is optimal?
For pressure pipes usually 1–2 m/s: higher velocity increases pressure loss and noise.

The calculations are approximate: they help to assess the process and compare options, but do not replace a process design and trials on a specific raw material. This section is for reference only and contains no commercial offers.