Tightening Torques For Diaphragms - Burkert 3232 Manuel D'utilisation

Type 3232, 3233, 3233 K, 3234,
3235, 3239
Procedure:
→
Cross-loosen fastening screws and remove actuator with dia-
phragm from the housing.
→
Weld or glue housing in the pipeline.
→
After welding or gluing in the housing, smooth the housing surface
(if required) by grinding.
→
Clean the housing carefully.
→
Place actuator on the housing.
→
Lightly cross-tighten the fastening screws until the diaphragm is
between the housing and actuator.
Do not tighten screws yet.
→
Activate the diaphragm valve twice to position the diaphragm
correctly.
→
Tighten the fastening screws up to the permitted tightening
torque (see tables in chapter „8.3.2. Tightening torques for
diaphragms").
Installation
8.3.2. Tightening torques for diaphragms
Orifice
Diaphragm
(Diaphragm size)
EPDM / FKM
DN [mm]
8
15
20
25
32
40
50
Tab. 8: Tightening torques for diaphragms. Actuator PPS or
stainless steel
Orifice
Diaphragm
(Diaphragm size)
EPDM / FKM
DN [mm]
65
80
100
Tab. 9: Tightening torques for diaphragms. Actuator stainless steel
english
Actuator PPS or stainless steel
Diaphragm
PTFE/advanced
PTFE/laminated
advanced PTFE
2 2,5
3,5 4
4 4,5
5 6
6 8
8 10
12 15
Actuator stainless steel
Diaphragm
PTFE/advanced
PTFE/laminated
advanced PTFE
20 30
30 40
40 50
17