Burkert Type 2731 - Manual (Page 12)

diaphragm medium remarks
EPDM -10 – +130 °C Steam sterilization: up to +150 °C
FKM -5 – +130 °C
• dry up to + 150 °C
• otherwise only briefly up
to +150 °C
PTFE -10 – +130 °C Steam sterilization: up to +150 °C
Tab. 4: Permitted medium temperature for diaphragms
6.6.2 pressure ranges
WarNiNg!
risk of injury, chemical burns, scalding due to the device
rupturing at excessively high pressure!
▶ Do not exceed the maximum pilot and medium pressure.
▶ Observe permitted ambient and medium temperature.
▶ Observe specifications on the type label.
pilot pressure for valves with pneumatic position controller
To ensure reliable operation with pneumatic position controller,
observe the permitted minimum and maximum pilot pressure!
actuator size [mm] pilot pressure
ш 125, ш 175, ш 225 5.5 – 7.0 bar
Tab. 5: Pilot pressure for valves with pneumatic position controller
maximum pilot pressure for valves without pneumatic position
controller - control function a
actuator size [mm] actuator material
max. permitted pilot
pressure
2)
ø 125 PA, PPS 7 bar
ш 175, ш 225 PA 6 bar
Tab. 6: Maximum pilot pressure for valves without pneumatic
position controller - control function A
2)
Observe the maximum pressure range according to the type
label!
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
pv
c d
n 60-80
dn 100
Fig. 6: Graph of medium pressure / medium temperature
12
Technicaldata
english
Type 2730 / 2731 DN 65-100