Pressure Ranges - Burkert 2730 Manuel D'utilisation

Permitted medium temperature for body
Plastic body: note that the permissible medium pressure is
dependent on the medium temperature (see "Fig. 4: Graph
of medium pressure / medium temperature").
Body material
PVDF (PD)
PP (PP)
PVC (PV)
Stainless steel body
1.4404 (AISI 316L)
(VA)
Cast body (VG) 1.4435 (AISI 316L)
1.4435 BN2 (AISI 316L)
Forged body (VS) according to ASME BPE
1997
Tab. 2: Permitted medium temperature for body
Permitted medium temperature for diaphragms
The indicated medium temperatures apply only to media
which do not corrode or swell the diaphragm materials.
The behavior of the medium with respect to the diaphragm
may be changed by the medium temperature.
The function properties, in particular the service life of the dia-
phragm, may deteriorate if the medium temperature increases.
10
Medium
-10 – +120 °C
-10 – +80 °C
-10 – +60 °C
-10 – +140 °C
english
Type 2730 / 2731 / 2731K
Technicaldata
Diaphragm Medium
EPDM -10 – +130 °C
FKM 0 – +130 °C
PTFE -10 – +130 °C
Tab. 3: Permitted medium temperature for diaphragms
6.5.2 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
ø 80, ø 100, ø 125 5.5 – 7.0 bar
Tab. 4: Pilot pressure for valves with pneumatic position controller
Remarks
Steam sterilization: up to +150 °C
• dry up to + 150 °C
• otherwise only briefly up
to +150 °C
Steam sterilization: up to +150 °C