Burkert 2100 Manuel D'utilisation page 20

8.3.2. Install actuator (welded body)
Fig. 14: Graphite seal
→
Check the graphite seal and if required, replace it.
WARNING!
Danger if incorrect lubricants used!
Unsuitable lubricant may contaminate the medium. In oxygen
applications there is a risk of an explosion!
• In specific applications, e.g. oxygen or analysis applications,
use appropriately authorised lubricants only.
→
Grease nipple thread before re-installing the actuator (e.g. with
Klüber paste UH1 96-402 from Klüber).
NOTE!
Damage to the seat seal or the seat contour!
• When installing the actuator, ensure that the valve is in open
position.
20
Graphite seal
english
Type 2100
Installation
→
Control function A pressurize the pilot air port 1 with com-
pressed air (5 bar): valve opens.
→
Screw actuator into the valve body.
Observe tightening torque (see "Tab. 5: Tightening torques of
valve body / nipples").
Air discharge connection 2
CFA, CFB
Pilot air port
CF I
1
Pilot air port
CFA, CFB, CFI
Fig. 15: Connections
Tightening torques of valve body / nipples
DN Tightening torque [Nm]
15 45 ±3
20 50 ±3
25 60 ±3
32
65 ±3
40
50 70 ±3
65 100 ±3
Tab. 5: Tightening torques of valve body / nipples