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Table 1: Technical data
Valve size
DN
K
coefficient
VS
Flanged body
x
value
FZ
Flanged body
Pressure rating
Max. permissible
differential pressure
∆p across the valve
Max. permissible
medium temperature
Permissible ambient
temperature
Compliance
Flow rate set point ranges for water in m³/h
Diff.
0.2 bar
pressure
at the
restriction
Δp
restriction
0.3 bar
Special versions
3)
Additional version: Valve with flanged body made of spheroidal graphite iron
4)
For PN 16 version
5)
Diaphragm and seals made of FKM (PN 25 only)
6)
An increase in noise level can be expected when the specified flow rates are exceeded, even if
7)
cavitation does not occur.
EB 3128 EN
15
0.4
1.0
2.5
1)
1)
0.6
PN 16 · PN 25
10 bar
Liquids 130 °C (PN 16) · 150 °C (PN 25) · Nitrogen and air 80 °C · 150 °C
–
–
–
0.02
0.01
0.02
to
to 0.2
to 1.2
0.64
–
–
–
Design and principle of operation
20
4.0
6.3
1)
–
–
/20 bar
3)
0 to +50 °C
·
0.1 to
0.1 to
1.3
2.3
5)
5)
0.1 to
0.1 to
0.1 to
2.5
3.6
0.1
–
to 3
25
32
40
2)
8.0
12.5
16.0
12.5
20.0
0.55
0.5
0.45
PN 25
16 bar
0.1 to
0.3 to
0.4 to
3.5
5.8
9.1
5)
5)
0.3
0.4 to
4.2
to 10
12.5
0.1
–
–
to 5
50
2)
2)
20.0
25.0
0.45
0.40
4)
0.4 to
14.1
5)
5)
0.4
to 15
–
15
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