| <BR> | The third and simplest method of determining the pipe inside diameter d i is the bar graph. However, this method is very limited in application. Two conditions must be met for the bar graph method to be used:
- A maximum pressure p max in the network of 8 bar op .
- A target pressure loss Dp of 0,1 bar.
The bar chart is very easy to use :
Take the determined maximum volume flow  and the effective pipe length and find the respective line or column in the graph. The resulting intersection indicates the correct pipe nominal width to meet the requirements.
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