Burkert 2030 Manuel D'utilisation page 26

dn tightening torques for diaphragms [nm]
epdM / fkM
8 2
15 3.5
20 4
25 5
32 6
40 8
50 12
65 15
Table 9: Tightening torques for diaphragms
8.3.2. 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. 6: Pneumatic Connection)
→
Pressure on the upper connection closes the valve.
→
Pressure on the lower connection opens the valve.
26
ptfe
2.5
4
4.5
6
8
10
15
20
English
Types 2030, 2031, 2031 K
Installation
Upper control air connection
(for CFB and CFI)
Lower control air connection
(for CFA and CFI)
Fig. 6: Pneumatic Connection
Control air hose:
Control air hoses of sizes 6/4 mm or 1/4" can be used.
Optionally a control air connection is possible via a G 1/8 thread.