Burkert Type 2731 User Manual
Page 13
medium pressure for plastic body
Plastic body: note that the permissible medium pressure is
dependent on the medium temperature (see “Fig. 6”).
Medium temperature [°C]
Medium pressure [bar]
0
2
4
6
8
10
20
40
60
80
100
120
140
pp
pV
c
pVdf
Fig. 6: Graph of medium pressure / medium temperature
pilot pressure for control function a
3)
The values apply to
• Plastic body PVDF (PD), PP (PP), PVC (PV)
• Forged steel body (VS)
• Precision casting body (VG)
• Stainless steel body (VA) with
ISO weld end connection
ISO clamp connection
Threaded connection
Welded neck flange
a
ctuator
size
[mm]
Orifice
dn
(d
iaphragm
size)
[mm]
max. sealed medium pressure [bar]
pressure on one
side
pressure on both
sides
epdm/fkm
ptfe
epdm/fkm ptfe
ш 80
15
10
10
10
10
20
10
10
10
10
25
10
7.5
8.5
5.5
ш 100
32
10
8
9
6
ш 125
40
10
10
10
9
50
8
7
7
6
Tab. 8: Pilot pressure for control function A
13
Technicaldata
english
Type 2730 / 2731 / 2731K