20
Installationandwiring
Type 8011
7.3.
Graphs
These graphs are used to determine the DN of the pipe and the fitting appropriate to the application, according to the fluid velocity and the flow rate.
Flow rate
Fluid velocity
s
election
example:
The flow rate in the pipe is 10
m
3
/h. If the ideal fluid velocity is 2 to 3
m/s, ,
then use a DN40 (or DN
50)* pipe according to the graphs.
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
m
3
/h
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
gpm
0.05
0.1
0.2
0.5
1
2
5
10
20
50
100
200
500
1000
DN 50 (DN65)*
DN 40 (DN50)*
DN 32 (DN40)*
DN 25 (DN32)*
DN 20 (DN25)*
DN 15 (DN15
/ 20)*
DN 08
DN 06
* For fittings:
•
with external thread connections acc. to SMS
1145,
•
with welding end connections acc. to SMS
3008
DIN
11866
series
C / BS
4825-1 / ASME
BPE,
DIN
11866
series
B / ISO
1127 / ISO
4200 or DIN
11850
series
2
/ DIN
11866
series
A / EN
10357
series
A
•
Clamp connections acc. to SMS
3017 / ISO
2852, BS
4825-3 /
ASME
BPE, DIN
32676
series
A or DIN
32676
series
B
English
Summary of Contents for 8011
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