Burkert 2030 Manuel D'utilisation page 19

Type 2030, 2031, 2031 K, 2032,
2033, 2037
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Lightly cross-tighten the housing screws without pressurization
until the diaphragm is between the housing and actuator.
Do not tighten the screws yet.
→
Pressurize upper control air connection with compressed air (value
as indicated on the rating plate) (see Fig. 17).
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Actuate the diaphragm valve twice.
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Tighten the housing screws to the permitted tightening torque
(see Tab. 7)
Fig. 17: Control air connection
Tightening torques for plastic housing, VA tubular housing (VA)
and forged housing
Orifice
(Diaphragm size)
DN [mm]
Elastomer -
Diaphragm
65
80
100
Tab. 7: Tightening torques for diaphragms
Installation
Upper control air connection
(for CFB and CFI)
Lower control air connection
(for SFA and SFI)
Tightening torque [Nm]
(values for guidance)
PTFE - Diaphragm
20 30
30 40
40 50
Stainless Steel Insert (only for units without diaphragm and
casing)
If you have ordered and received a unit without diaphragm and casing,
a stainless steel insert (Id.-Nr. 648 864) will have been included with it.
Use of an EPDM / FKM diaphragm:
→
When assembling a unit with an
elastomer diaphragm (EPDM/FKM),
lay the stainless steel insert into the
groove in the pressure component.
Use of a PTFE - Diaphragm:
→
When using a PTFE diaphragm, the
insert is not required.
8.3.2. C onnection of the control medium
Control function A:
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Connect control medium to lower connection.
Control function B:
→
Connect control medium to upper connection.
Control function I:
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Connect control medium to upper and lower connections.
(see Fig. 18)
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Pressure on the upper connection closes the valve.
→
Pressure on the lower connection opens the valve.
english
Insert
19