Pressure/temperature
correlation:
Pressure/temperature correlation PN 6
Valve body material
Temperature in °C (valve body)
Materials
Code
-10
0
5
10
20
25
30
40
50
60
70
80
PVC-U
1
-
-
-
6.0
6.0
6.0
4.8
3.6
2.1
0.9
-
-
PP
5
-
-
6.0
6.0
6.0
6.0
5.1
4.2
3.3
2.4
-
-
PP-H
N5
-
-
6.0
6.0
6.0
6.0
5.1
4.2
3.3
2.4
-
-
PVDF
20
6.0
6.0
6.0
6.0
6.0
6.0
5.4
4.8
4.3
3.8
6.0
6.0
Pressure/temperature correlation PN 10
Valve body
material
Temperature in °C (valve body)
Materials
Code
-10
0
5
10
20
25
30
40
50
60
70
80
PVC-U
1
-
-
-
10.0 10.0 10.0 8.0
6.0
3.5
1.5
-
-
ABS
4
10.0 10.0 10.0 10.0 10.0 10.0 8.0
6.0
4.0
2.0
-
-
PP-H
71
-
-
10.0 10.0 10.0 10.0 8.5
7.0
5.5
4.0
2.7
1.5
PVDF
75
10.0 10.0 10.0 10.0 10.0 10.0 9.0
8.0
7.1
6.3
5.4
4.7
The pressure rating (PN) depends on the diaphragm size.
Data for extended temperature ranges on request. Please note that the ambient temperature and media temper-
ature generate a combined temperature at the valve body which must not exceed the above values.
Leakage rate:
Leakage rate A to P11/P12 EN 12266-1
Kv values:
MG
Nominal size
Kv value
MG 10
DN 12
2.8
DN 15
3.5
DN 20
3.5
MG 20
DN 15
6.0
DN 20
10.0
DN 25
12.0
MG 25
DN 32
20.0
MG 40
DN 40
42.0
DN 50
46.0
Kv values in m³/h
MG = diaphragm size
Kv values determined acc.to DIN EN 60534 standard, inlet pressure 5 bar, Δp 1 bar, PVC-U valve body and soft
elastomer diaphragm.
The Kv values for other product configurations (e.g. other diaphragm or body materials) may differ. In general,
all diaphragms are subject to the influences of pressure, temperature, the process and their tightening torques.
Therefore the Kv values may exceed the tolerance limits of the standard.
The Kv value curve (Kv value dependent on valve stroke) can vary depending on the diaphragm material and dur-
ation of use.
GEMÜ R629 eSyLite
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11 / 41
6 Technical data
