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Maximum flow rate

Another consideration for the selection of the pipe diameter is the maximum permissible flow rate.

To avoid noise generation and water hammer, the calculated flow rate may not exceed the values of the table below.

Section of the installation max. calculated flow rate at run
< 15 min. m/s > 15 min. m/s
Connecting pipes 2 2
Service pipes: Parts with poor drag reducing passage armatures (<2.5) * 5 2
Parts with passage armatures with a higher correction value loss ** 2.5 2
* i.e. piston valves, ball cock inclined values
** i.e. screw-down stop globe valves


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