Burkert 2730 Manuel D'utilisation page 11

Type 2730 / 2731 DN 65-100
TechnicalData
maximum pilot pressure for valves without pneumatic position
controller - control function a
actuator size [mm] actuator material
ø 125 PA, PPS
ø 175, ø 225 PA
Tab. 5: Maximum pilot pressure for valves without pneumatic
position controller - control function A
Observe the maximum pressure range according to the type
2)
label!
medium pressure for plastic body
Plastic body: note that the permissible medium pressure is
dependent on the medium temperature (see "Fig. 4").
10
dn 100
8
6
4
2
0
20 40
Fig. 4: Graph of medium pressure / medium temperature
max. permitted pilot
pressure
2)
7 bar
6 bar
60 80 100 120
Medium temperature [°C]
pilot pressure for control function a
ø 125 65
65
ø 175
80
80
ø 225
100
Tab. 6: Pilot pressure for control function A
The control functions are described in the chapter entitled "5.4.2
3)
Function / control functions (CF)".
Max. operating pressure for GYLON/EPDM laminated is 8.5 bar.
4)
Max. operating pressure for GYLON/EPDM laminated is 8.0 bar.
5)
required minimum pilot pressure depending on medium pressure
for control function B.
The following graphs indicate the minimum pilot pressure required for
control functions B depending on the medium pressure. The values
are valid for medium pressure on both sides.
To protect the diaphragm during control function B, preferably
140
do not select the pilot pressure higher than is required to
switch the medium pressure.
3)
max. sealed medium pressure [bar]
pressure on one pressure on both
side
epdm/fkm ptfe epdm/fkm
7.0 4.0 4.5
8.0 5.0 5.0
5.0 4.5 2.5
10.0 7.0 6.0
4)
8.0 4.0 3.5
english
sides
ptfe
2.0
4.5
2.0
4.5
5)
1.5
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