Burkert Type 2037 - Manual (Page 9)

9
TechnicalData
Maximum permitted medium pressure for control function a
The values apply to body made of:
• Plastic,
• VA forged steel and VA precision casting, VA block material as well
as VA tube-formed body with socket, DIN welding neck flange and
welded connection in accordance with EN ISO 1127 (ISO 4200).
orifice
(diaphragm
size)
dn [mm]
actuator
size ø
[mm]
Max. sealed medium pressure [bar]
pressure on one
side
pressure on both
sides
EpdM/
fkM
ptfE EpdM/
fkM
ptfE
65 175 8.0 5.0 5.0 4.5
80
175 5.0 4.5 2.5 2.0
225 10.0 10.0 6.0 4.5
100 225 8.0 4.0 3.5 1.5
Tab. 4: Maximum permitted medium pressure CFA
Medium temperature for body:
Body material temperature
Stainless steel -10 ... +140 °C
PVC (see PT-graph) -10 ... +60 °C
PVDF (see PT-graph) -10 ... +120 °C
PP (see PT-graph) -10 ... +80 °C
Tab. 2: Medium temperature for body
Medium temperature for diaphragms:
Material temperature remarks
EPDM / PTFE -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
Tab. 3: Medium temperature for diaphragms
6.3.2 maximum permitted medium pressure
Permitted medium pressure depending on the medium temperature.
DN 65 - 100
10
8
6
4
2
20 40 60 80 100 120 140
PVC
PVDF
PP
Medium
pressure
[bar]
temperature [°c]:
Fig. 3: Graph of medium pressure / Medium temperature
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Type 2030, 2031, 2031 K, 2032,
2033, 2037