Technical Data - Gemü 610 Einbau- Und Montageanleitung

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Technical data

Working medium
Corrosive, inert, gaseous and liquid media which have no
negative impact on the physical and chemical properties of
the body and diaphragm material.
Working medium temperature
Valve body PVC-U
Valve body PP / PP-H
Valve body PVDF
The permissible operating pressure depends on the working
medium temperature.
Temperature in °C
(plastic body)
Valve body material
PVC-U Code 1
PP / PP-H Code 5 / N5
PVDF Code 20
Data for extended temperature ranges on request. Please note that the ambient temperature and medium temperature generate a combined
temperature at the valve body which must not exceed the above values.
Diaphragm size DN
12
10 15
20
All pressures are gauge pressures. Operating pressure values were determined with static operating pressure applied on one side of a closed
valve. Sealing at the valve seat and atmospheric sealing is ensured for the given values. Information on operating pressures applied on both
sides and for high purity media on request. Control pressure values depend on the valve stroke.
Kv values determined acc. to DIN EN 60534, inlet pressure 5 bar, ∆p 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.
O-ring material for valve bodies
with union ends
Diaphragm material
NBR
FPM
EPDM
PTFE
Other combinations on request
With pneumatically operated diaphragm valves there is an
interdependence between control pressure and operating pressure
regarding the valve stroke.
With valves closed by spring pressure this means: The lower the
operating pressure, the higher the control pressure must be to open the
valve completely. With valves opened by spring pressure the opposite
applies.
In principle care has to be taken that the stated maximum pressures
are not exceeded and that the minimum pressures are adhered to.
Required control pressures can be seen from the adjacent diagram.
The control pressure depending on the prevailing operating pressure,
as shown in the diagram, is intended as a guide for
operating the system with low wear on the diaphragm.
10 to 60 °C
5 to 80 °C
-10 to 80 °C
Pressure / temperature correlation for plastic
-20 -10 ±0 5
- - - -
- - - 6.0
- 6.0 6.0 6.0
Operating pressure
[bar]
0 - 6
O-ring material
EPDM
FPM
EPDM
FPM
Ambient temperature
Valve body PVC-U
Valve body PP / PP-H
Valve body PVDF
Control medium
Inert gases
Max. permissible temperature of control medium
Filling volume
10 20 25
Permissible operating pressure
6.0 6.0 6.0 4.8
6.0 6.0 6.0 5.1
6.0 6.0 6.0 5.4
Control pressure [bar]
Stf. 1 Stf. 2
max. 5.5
5 - 7
see diagram
Control pressure / operating
pressure diagram
6
5
4
3
2
1
1 2
Operating pressure [bar]
21 / 36
30 40 50 60
[bar]
3.6 2.1 0.9
4.2 3.3 2.4
4.8 4.3 3.8
Stf. 3
max. 5.0
3 4 5
10 to 50 °C
5 to 50 °C
-5 to 50 °C
40 °C
0.02 dm³
70 80
- -
1.6 0.9
3.2 2.8
Kv value
[m³/h]
2.8
3.5
3.5
C.f. 2 Stf. 2
C.f. 3
Stf. 3
6
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