Burkert 2031 Manual de início rápido - Página 13
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Type 2030, 2031, 2031 K, 2032,
Procedure for control function A
→ Pressurize the lower control air connection with compressed
air (value on type label) (see "Fig. 5: Control air connection").
→ Place actuator on the body.
→ Lightly cross-tighten the body screws in diagonal pairs until
the diaphragm lies between the body and actuator.
Do not fully tighten screws yet.
→ Actuate the diaphragm valve twice to position the diaphragm
correctly.
→ Tighten body screws without pressurization in diagonal pairs
in three stages (approx. 1/3, approx. 2/3, 3/3 of the tightening
torque), according to Table ("Tab. 2: Tightening torques in Nm
for diaphragms"). The diaphragm should be positioned and
pressed evenly all around the actuator and body.
Procedure for actuator with control functions B and I:
→ Place actuator on the body.
→ Lightly cross-tighten the body screws in diagonal pairs
without pressurization until the diaphragm is between the
body and actuator. Do not fully tighten screws yet.
→ Pressurize the upper control air connection with compressed
air (value on type label) (see following "Fig. 5: Control air
connection").
→ Actuate the diaphragm valve twice.
→ Tighten body screws with pressurization in diagonal pairs in
three stages (approx. 1/3, approx. 2/3, 3/3 of the tightening
torque), according to Table ("Tab. 2: Tightening torques in Nm
for diaphragms"). The diaphragm should be positioned and
pressed evenly all around the actuator and body.
2033, 2037
Installation
Upper control air connection
(for SFB and SFI)
Lower control air connection
(for SFA and SFI)
Fig. 5:
Control air connection
Orifice
VS, PP, PVC, PVDF, VG
DN
EPDM/
PTFE/advanced
(Diaph-
FKM
PTFE/laminated
ragm
PTFE
size)
8
2
2.5
15
3.5
20
4
4.5
25
5
32
6
40
8
10
50
12
15
65
20
30
Tab. 2:
Tightening torques in Nm for diaphragms
→ A tolerance of +10% of the respective tightening torque
applies to all values.
english
VA and VP
EPDM/
PTFE/advanced
FKM
PTFE/laminated
PTFE
2.5
2.5
4
3.5
4
4
4.5
6
7
8
8
8
10
12
15
15
20
-
-
13