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Pipe diameter for 10 m³/h of water

For 10 m³/h of water at 1.5 m/s an inner diameter of about 49 mm is needed — this is a DN50 food-grade pipe. The calculator shows the actual velocity and the pressure loss over the section.

Parameters

Result

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

Calculation example

Flow rate
10
Flow unit
m³/h
Medium
Water
Section length
50 m
Calculated inner diameter
48,6 mm
Nearest nominal size DN (not smaller)
50 mm
Inner diameter of the DN pipe
50 mm
Recommended velocity
1,50 m/s
Actual velocity in the DN pipe
1,41 m/s
Reynolds number
70 736
Pressure loss over the section
0,194 bar

Frequently asked questions

What velocity is used for water in a pipe?
Usually 1–2 m/s: a lower velocity means a larger diameter, a higher one means greater pressure losses 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.