Gemü 512 Original Einbau- Und Montageanleitung Seite 21

Nominal Operating pressure [bar]
size Control function 1*
Actuator
size 1
[mm]
piston
ø70 mm
15 20.0
20 20.0
25 10.0
32 7.0
40 4.5
50 3.0
65 -
80 -
100 -
Operating pressure for seal material PTFE (Code 5); for seal material steel (Code 10) only 60 % of the values indicated above.
* Please observe pressure / temperature correlation (see table below). ** For material code 11 and 38: Control pressure 5.5 - 8 bar.
Kv values determined acc. to DIN EN 60534 standard, valve body material cast iron EN-GJL-250 with connection flange EN 1092.
The Kv value data refers to control function 1 (NC) and the largest actuator for each nominal size.
Kv values may be different for other combinations. Consult GEMÜ.
Pressure / temperature correlation for globe valve bodies
Connection Material
code code
8
39
11 11
39 11
40 11
8 37
39 37
11 38
39 38
40 38
* The valves can be used down to -10 °C
Actuator size 1 / Control function 2
Min. control pressure dependent on operating pressure
Operating pressure in bar
Control pressure [bar]
Control function 1
Actuator Actuator
size 2 size 1
piston piston
ø120 mm ø70 mm
40.0 5.5 - 10
40.0 5.5 - 10
40.0 5.5 - 10
32.0 5.5 - 10
19.0 5.5 - 10
10.0 5.5 - 10
7.0
5.0
2.5
RT
8 16.0
8 13.8
39.0
19.7
39.0
16.0
19.0
39.8
19.0
39.8
RT = Room Temperature
Operating pressure / Control pressure characteristics
Actuator
size 2
piston
ø120 mm
4.0 - 8
4.0 - 8
4.0 - 8
4.0 - 8**
4.0 - 8**
5.5 - 8
- 5.5 - 8
- 5.5 - 8
- 5.5 - 8
Max. allowable pressure (barg) at temperature °C*
100 150
16.0 14.4
12.8 11.3
34.1 31.7
17.7 15.8
34.1 31.7
16.0 14.5
16.0 14.8
36.0 33.3
16.0 14.8
36.4 33.4
Actuator size 1 / Control function 3
Min. control pressure dependent on operating pressure
21 / 36
Kv
Weight [kg]
value
Actuator
size 1
[m /h]
3
piston
ø70 mm
3.6 3.6
6.0 4.6
9.6 5.2
15.0 7.5
23.0 8.3
36.0 11.3
60.0 -
89.0 -
135.0 -
200 250
12.8 11.2
9.8 -
28.4 26.0
14.0 12.1
28.4 26.0
13.4 12.7
13.6 12.0
31.3 29.4
13.6 12.1
31.1 29.0
Operating pressure in bar
Actuator
size 2
piston
ø120 mm
7.5
8.5
9.1
11.4
12.2
15.2
22.4
26.0
34.5
300
9.6
-
23.5
10.2
23.5
11.8
10.2
27.5
10.2
26.9
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