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Table 6: Flow rate set point range for water in m³/h
Valve size DN
K
coefficient
0.4
VS
Set point range in
m³/h with a diff.
press. at restriction
0.01 to
∆p
of
restriction
0.2
0.2 bar
Also as version with flanged valve body
1)
K
coefficient with flanged valve body
2)
VS
An increase in noise level can be expected when the specified flow rates are exceeded.
3)
5 m³/h with ∆p
4)
restriction
12
11
10
9
8
7
6
5
4
3
2
1
0.01
0.02 0.03 0.05
__
* With ∆p
restriction
Fig. 8: Set point adjustment for flow rate (guide) · Differential pressure across the restriction
Δp
= 0.2 bar
restriction
EB 3131 EN
15
1
2.5
–
0.12 to
0.2 to
0.64
1.2
= 0.3 bar (special version)
0.1
= 0.3 bar
20
4
6.3
0.6 to
0.8 to
1.3
2.3
3)
3)
0.6 to
0.8 to
2.5
3.6
DN 15
0.4
1
2.5
0.2 0.3
0.5
1
Mounting and start-up
25
32
40
8
12.5
16/20
0.8 to
2 to
3 to
3.5
5.8
9.1
3)
3)
0.8 to
3 to
2 to 10
4.2
12.5
4)
20
25
25*
32 40
4
2
3 4 5 6 7 8 910 15
Flow rate in m³/h
50
1)
1)
20/25
2)
2)
4 to
14.1
3)
3)
4 to 15
50
•
V
29
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