5
2
TRANSPORTATION, RECEPTION AND
STORAGE
Check the valve and the accompanying device for any dam-
age that may have occurred during transport.
Store the valve carefully. We recommend storing indoors in
a dry place.
Do not remove the flow port protectors until installing the
valve.
Move the valve to its intended location just before installa-
tion.
The valve is usually delivered in the open position.
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
Flush the pipeline carefully before installing the valve. Make
sure the valve is entirely open when flushing. Foreign parti-
cles, such as sand or pieces of welding electrode, will dam-
age the ball and seats.
The valve may be installed in any position and offers 1-way
or 2-way tightness, see Sections 1.2 and 1.4. 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 posi-
tion to be avoided is shown in Fig. 7.
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 sup-
ported by the body, using pipe clamps and supports. Do not
fasten supports to the flange bolting or to the actuator, see
Fig. 8.
Fig. 5
Storing the valve
Fig. 6
Lifting the valve
CAUTION:
When handling the valve or the valve package as a
whole, bear in mind the weight of the valve or the
entire package!
CORRECT
WRONG
NOTE:
Use screws, nuts, bolts and gaskets equivalent to the fas-
tenings 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.
Fig. 7
Avoid this mounting position
Fig. 8
Supporting the valve
Summary of Contents for NELES XH Series
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