Bürkert 8012 Series, Руководство по эксплуатации, Страница: 30 / 136

30
Installationandwiring
Type 8012
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
Selection
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
DN
40
(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,
BS
4825
/
ASME
BPE
or
DIN
11850
Rg2,série2
•
Clamp
connections
acc.
to
SMS
3017/
ISO
2852,
BS
4825
/
ASME
BPE
or
DIN
32676
English