Overview On Coupling Variants - AUMA SQ 05.2 Operating Instructions Manual

Assembly

5.3.1 Overview on coupling variants

Set-up
Application •
5.3.1.1 Actuator (with coupling): mount
Assembly steps 1. If required, move actuator in same end position as valve using the handwheel.
14
Figure 8: Valve attachment via coupling
[1]
[1] Bore with keyway
[3] Bore with two-flats
For valve attachments according to EN ISO 5211
• For rotating, non-rising valve stem
Unbored couplings or couplings with pilot bore must be machined to match the valve
shaft prior to mounting the actuator to the valve (e.g. with bore and keyway, two-flat or
square bore).
Assemble valve and actuator in the same end position. As standard, the actu-
ator is supplied in end position CLOSED.
a) Recommended mounting position for butterfly valves: End position CLOSED.
b) Recommended mounting position for ball valves: End position OPEN.
We recommend applying liquid thread sealing material to the screws to avoid
contact corrosion.
2. Clean mounting faces, thoroughly degrease uncoated mounting surfaces.
3. Apply a small quantity of grease to the valve shaft [2].
4. Place coupling [1] onto valve shaft [2] and secure against axial slipping by using a
grub screw [3] or a clamping washer and a screw with curved spring lock washer
[4]. Observe dimensions X, Y or L. Refer to following picture and table Mounting
positions for coupling.
[2] [3]
[2] Square bore