3
INSTALLATION AND USE
3.1
General
Remove the flow bore protectors and check that the valve is
clean inside. Clean the valve if necessary.
3.2
Installing in the pipeline
CAUTION:
When handling the valve or the valve package as a
whole, bear in mind the weight of the valve or the
entire package!
Flush the pipeline carefully before installing the valve. Make sure
the valve is entirely open when flushing. Foreign particles, such
as sand or pieces of welding electrode, will damage the ball and
seats.
NOTE:
Use screws, nuts, bolts and gaskets equivalent to the fastenings
used elsewhere in the pipeline. Center the flange gaskets
carefully when fitting the valve between flanges.
NOTE:
Do not attempt to correct pipeline misalignment by means of
flange bolting.
The valve may be installed in any position and offers tightness in
both directions. However we do not recommend installing the
valve with the actuator on the underneath side because dirt in
the pipeline may then enter the body cavity and damage the
gland packing. The position to be avoided is shown in Fig. 11.
It may be necessary to firmly support the pipeline in order to
protect the valve from excess stress. Sufficient support will also
reduce pipeline vibration and thus ensures proper functioning of
the positioner.
To facilitate servicing, it is preferable that the valve be supported
by the body, using pipe clamps and supports. Do not fasten
supports to the flange bolting or to the actuator, see Fig. 12.
3.3
Actuator
NOTE:
When installing the actuator on the valve, make sure that the
valve package functions properly. Detailed information on
actuator installation is given in section 6 or in the separate
actuator instructions.
The valve open/closed position is indicated as follows:
by an indicator on the actuator
or
by a groove at the end of the ball stem (parallel to the ball
flow opening).
If there is any uncertainty about the indicator, check the ball
position by the groove.
The actuator should be installed in a manner that allows plenty
of room for its removal.
The upright position is recommended for the actuator cylinder.
The actuator must not touch the pipeline, because pipeline
vibration may interfere with its operation.
In certain cases it may be considered advantageous to provide
additional support to the actuator. These cases will normally be
associated with large actuators, extended stems, or where severe
vibration is present. Please contact Metso Automation for advice.
3.4
Commissioning
Ensure that there is no dirt or foreign objects left inside the valve
or pipeline. Flush the pipeline carefully. Make sure that the valve
is entirely open when flushing.
Ensure that all nuts, pipings, and cables are properly fastened.
Check that the actuator, positioner, and switch are correctly
adjusted. Actuator adjustment is explained in section 6. To adjust
the accompanying device refer to the separate control equip-
ment instruction manuals.
Fig. 11.
Avoid this mounting position
Fig. 12.
Supporting the valve
6
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