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GENERAL PUMP
A member of the Interpump Group
KE SERIES
9.7 Internal diameter of piping
To determine the internal diameter of the piping, follow the following diagram.
Example 1 (-----)
With a flow of 150 l/m and a water speed of 0.45 m/sec, the diagram line joining the 2 scales intersects the central
scale, indicating the diameters, at a value of 80mm.
Example 2 ( )
With a flow of 70 l/min and a water speed of 5.5 m/sec, the diagram line joining the 2 scales intersects the central
scale, indicating the diameters, at a value of 16mm.
Optimal speeds:
- suction:0.5 m/sec
- delivery: 5 m/sec
The diagram does not take into consideration the pipe and valve resistance, drop in pressure, due to the
pipe length, the viscosity of the pumped fluid, its temperature, etc.
Ref 300614 Rev.E
05-12
