Burkert 2012 Manuel D'utilisation page 17

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Screw actuator into the valve body.
Tightening torques of valve body / nipples
Nominal diameter
15
20
25
32
40
50
65
Tab. 4: Tightening torques of valve body / nipples
8.3.3 Rotating the actuator
The position of the connections can be aligned steplessly by rotating
the actuator through 360°.
NOTE!
Damage to the seat seal or the seat contour!
▶ When rotating the actuator, ensure that the valve is in open
position.
Procedure:
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Clamp the valve body in a holding device
(applies only to valves which have not yet been installed).
Type 2012
Installation
Tightening torque (Nm)
45 ± 3
50 ± 3
60 ± 3
65 ± 3
65 ± 3
70 ± 3
100 ± 3
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Control function A: pressurize the lower control air connection
with compressed air (6 bar): valve opens.
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Counter on the flats of the nipple with a suitable open-end wrench.
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Place suitable open-end wrench on the hexagon of the actuator.
WARNING!
Risk of injury from discharge of medium and pressure!
If the direction of rotation is wrong, the body interface may become
detached.
▶ Rotate the actuator module in the specified direction only (see
"Fig. 19").
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By turning the open-end wrench clockwise (viewed from above),
move the actuator into the required position.
Fig. 19: Turning with open-end wrench
english
Open-end wrench
17