16
Installation & Maintenance Instructions
Extend the actuator output shaft to bring the end of the shaft
and the coupling together. Rotate the coupling as required
to get a good firm contact between the valve stem and the
output shaft.
Adjust and tighten locking nut(s) if fitted on valve stem side
of the coupling. Ensure that the actuator is centrally aligned
with the valve stem.
If the actuator output shaft reaches its fully extended position
it will be necessary to retract the actuator shaft a sufficient
distance to allow adjustment of the coupling to ensure a tight
shut off in thrust seating valves.
WARNING
It is critical that there is correct alignment between the
actuator output shaft and the valve stem.
Misalignment will result in increased mechanical wear
and possible damage to the valve stem.
Fig 6.5 Mounting flange
Fig 6.6 Secure mounting fixing
Fig 6.7 Connection of valve shaft and actuator shaft
6.0 Installation
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