User guide
39
Installation and commissioning
Type S020
7.2.9. Graph - pipe DN - fluid velocity - flow rate
The graph is used to determine the DN of the pipe and the fitting appropriate to the application, according to the fluid velocity and the flow rate.
0.1 0.3 0.5 1 3 5 10
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
10
20
50
100
200
0.2
0.5
1
2
5
10
20
50
100
200
500
1000
2000
3000
l/min
0.3 0.5 1 3 5 10
30
m/s
fps
US gpm
0.05
0.1
0.2
0.5
1
2
5
10
20
50
100
200
500
1000
DN 65 (DN80)*
DN 50 (DN65)*
DN 40 (DN50)*
DN 32 (DN40)*
DN 25 (DN32)*
DN 20 (DN25)*
DN 15 (DN15 ou DN20)*
DN 08
DN 06
500
1000
2000
2000
5000
10000
5000
20000
5000
10000
20000
30000
50000
100000
DN 400
DN 350
DN 300
DN 250
DN 200
DN 150
DN 125
DN 100
DN 80 (DN100)*
m
3
/h
Flow rate
Fluid velocity
* For the following fittings:
• external thread connections acc. to SMS 1145,
• with weld end connections acc. to SMS 3008,
BS 4825 / ASME BPE or DIN 1850 range 2,
• with clamp connections acc. to SMS 3017 / ISO 2852,
BS 4825 / ASME BE or DIN 32676
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