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Installation
5.3.1
Controls and connections
Figure 5-1: Connections
5.3.2
Assembling the valve and actuator
The rotary actuator can be assembled on the valve as follows:
− Direct assembly of the rotary actuator directly on the valve in-
terface.
− Assembly of a bracket and a coupling.
WARNING
Danger of damage and malfunction by exceeding the torque
limit value.
In consideration of the maximum tightening torque, maximum air
supply pressure and the maximum transmittable actuator torque,
according to ISO 5211 the maximum transmissible tightening
torque may not exceed the torque limit in relation to the installed
ISO fl ange and the shaft connection.
This information is available on the type plate of the actuator,
see "2 Markings on the device".
NOTE
Damage due to incorrect fail-safe position!
When installing a single-acting actuator (with spring) with a de-
fi ned fail-safe position, check that when the pneumatic or electric
energy fails the direction of rotation complies with the applica-
tion (clockwise to close).
Info
− Before assembling the actuator on a valve, make sure that the
actuator turns in the required direction of rotation and that the
valve and actuator are correctly aligned with each other.
− All information necessary to assemble the actuator correctly
and safely on the valve, e.g.: dimensions, torque, air volume,
end position adjustment, response time, operating temperature,
direction of rotation are clearly marked on the type plate, on
the data sheet and /or the technical data sheets.
5-2
Tip
The assembly of the valve and actuator takes place according to
the signal range and direction of action of the actuator. This in-
formation is available on the type plate of the actuator, see
Chapter "2 Markings on the device".
Figure 5-2: Valve assembly
Table 5-1: Components for valve assembly
Pos.
A
B
C
D
Direct assembly
Insert the square drive, fl at head drive or key drive of the
valve shaft directly into the actuator shaft of the rotary actua-
tor (A).
Fasten the rotary actuator (A) and valve (B) with the corre-
sponding screws through the ISO fl ange. Observe the tight-
ening torques, see "Table 15-5: Tightening torques on the
ISO connection " in Chapter "15.1.1 Tightening torques".
Assembly using a bracket
Fasten the bracket (C) to the valve (B) with the corresponding
screws. Observe the tightening torques, see "Table 15-5:
Tightening torques on the ISO connection " in Chapter
"15.1.1 Tightening torques".
Plug the coupling (D) into the valve shaft.
Info
Make sure that the position indicator of the coupling matches the
switch position of the valve.
Designation
Rotary actuator
Valve
Console
Coupling
EB 31a_EN
December 2022 edition
Subject to technical changes
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