Gemü R690 Original Einbau- Und Montageanleitung Seite 23

MG DN
15
20 20
25
25 32
40
40
50
50 65
80 80
100 100
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.
*For required control pressure depending on operating pressure see diagram.
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.
MG = diaphragm size
Operating pressure [bar]
MG DN NPS
EPDM/FPM
15 1/2"
20 20 3/4"
25 1"
25 32 1 1/4"
40 1 1/2"
40
50 2"
50 65 2 1/2"
80 80 3"
100 100 4"
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.
*For required control pressure depending on operating pressure see diagram.
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.
MG = diaphragm size
Control pressure characteristic DN 15 - 100 (EPDM, FPM)
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.
NPS
1/2"
3/4"
1"
1 1/4"
1 1/2"
2"
2 1/2"
3"
4"
Control function 2
pressure [bar]*
PTFE
0 - 10 0 - 10
0 - 10 0 - 10
0 - 10 0 - 10
0 - 10 0 - 10
0 - 8 0 - 6
0 - 6 0 - 4
Control function 2 and 3
6
5
MG25
4
MG20
3
2
1
0 2
Operating pressure [bar]
Betriebsdruck [bar]
Control function 1
Operating pressure [bar]
EPDM/FPM PTFE
0 - 10 0 - 10
0 - 10 0 - 10
0 - 10 0 - 10
0 - 10 0 - 10
0 - 8 0 - 6
0 - 6 0 - 4
Control function 3
Operating pressure [bar]
Control
EPDM/FPM
max. 6.0 0 - 10
max. 5.5 0 - 10
max. 5.5 0 - 10
max. 5.0 0 - 10
max. 5.0 0 - 8
max. 5.0 0 - 6
MG80+100
4 6 8
23 / 40
Kv value
Control
pressure [bar]
5.0 - 7.0
5.0 - 7.0
5.0 - 7.0
5.5 - 7.0
5.0 - 7.0
5.5 - 7.0
Control
pressure [bar]*
PTFE
0 - 10 max. 6.0
0 - 10 max. 5.5
0 - 10 max. 5.5
0 - 10 max. 5.0
0 - 6 max. 4.5
0 - 4 max. 4.5
MG40
MG50
10
R690
[m³/h]
6
10
12
20
42
46
70
120
189
Kv value
[m³/h]
6
10
12
20
42
46
70
120
189