Burkert 2730 Manuel D'utilisation page 16

required minimum pilot pressure depending on medium pressure
for control function B.
The values in the following graphs apply to:
• Plastic body PVDF (PD), PP (PP), PVC (PV)
• Forged steel body (VS)
• Precision casting body (VG)
• Stainless steel body (VA) with
To protect the diaphragm during control function B, preferably
do not select the pilot pressure higher than is required to
switch the medium pressure.
control function B / elastomer diaphragm
ø 80 epdm
10
9
8
7
6
5
4
3
2
1
0
0 1 2
pilot pressure [bar]
Fig. 7: Pressure graph, actuator ø 80 mm, control function B,
elastomer diaphragm
16
ISO- weld end connection
ISO clamp connection
Threaded connection
Welded neck flange
3 4 5 6 7
english
ø 100, ø 125 epdm
10
9
8
7
6
5
4
3
2
1
0
0
Fig. 8: Pressure graph, actuator ø 100 mm and ø 125 mm,
control function B, elastomer diaphragm
control function B / ptfe diaphragm
ø 80, ø 100, ø 125 ptfe
10
9
8
7
6
5
4
3
2
1
0
0
8
Fig. 9: Pressure graph, actuator ø 80 mm, ø 100 mm and
ø 125 mm, control function B, PTFE diaphragm
Type 2730 / 2731 / 2731K
Technical data
1 2 3 4 5 6
pilot pressure [bar]
1 2 3 4 5 6
pilot pressure [bar]
7 8
DN50
7 8