Maintenance Work - Burkert 2030 Guide Rapide

Upper control air connection
(for SFB and SFI)
Lower control air connection
(for SFA and SFI)
Fig. 7: Control air connection
orifice Vs, pp, pVc, pVdF, Vg
(Diaph-
epdm/ ptFe/advanced
ragm
Fkm ptFe/laminated
size)
advanced ptFe
[mm]
8 2 2.5
15 3.5
20 4 4.5
25 5
32 6
40 8
50 12
65 20
Tab. 2: Tightening torques for diaphragms
12
All manuals and user guides at all-guides.com
Va and Vp
epdm/ ptFe/advanced
Fkm ptFe/laminated
advanced ptFe
2.5 2.5
4 3.5 4
4 4.5
6 7 8
8 8 10
10 12 15
15 15 20
30 - -
english
Type 2030, 2031, 2031 K, 2032,
Assembly
7.3.2 connection of the control medium
control function a:
→
Connect control medium to lower connection.
control function b:
→
Connect control medium to upper connection.
control function i:
→
Connect control medium to upper and lower connections
(see "Fig. 7: Control air connection").
→
Pressure on the upper connection closes the valve.
→
Pressure on the lower connection opens the valve.
7.4 maintenance work
7.4.1 actuator
The actuator of the diaphragm valve is maintenance-free provided it is
used according to these operating instructions.
7.4.2 Wearing parts of the diaphragm valve
Parts which are subject to natural wear:
• Seals • Diaphragm
→
If leaks occur, replace the particular wearing part with an appro-
priate spare part.
The maintenance and repair instructions can be found in the
internet at: www.burkert.com.
A distended PTFE diaphragm may reduce the flow-rate.
2033, 2037