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5 Installation
The work described in this section is only to
be performed by personnel appropriately
qualified to carry out such tasks.
5.1 Installation conditions
Work position
The work position for the control valve is the
front view looking onto the operating con-
trols (including valve accessories).
Plant operators must ensure that, after instal-
lation of the device, the operating personnel
can perform all necessary work safely and
easily access the device from the work posi-
tion.
Pipeline routing
The inlet and outlet lengths (see Table 5-1)
vary depending on several variables and
process conditions and are intended as
recommendations. Contact SAMSON if the
lengths are significantly shorter than the
recommended lengths.
To ensure that the valve functions properly,
proceed as follows:
Î Observe the inlet and outlet lengths (see
Table 5-1). Contact SAMSON if the
valve conditions or states of the medium
process deviate.
Î Install the valve free of stress and with the
least amount of vibrations as possible.
Read information under 'Mounting posi-
tion' and 'Support or suspension' in this
section.
EB 8061 EN
Î Install the valve allowing sufficient space
to remove the actuator and valve or to
perform service work on them.
Mounting position
Generally, we recommend installing the
valve with the actuator upright and on top of
the valve.
In the following versions, the valve must be
installed with the actuator on top:
− Valves in NPS 4 and larger
− Valves with insulating section for low
temperatures below –10 °C (14 °F)
Î Contact SAMSON if the mounting posi-
tion is not as specified above.
Support or suspension
Note
The plant engineering company is responsi-
ble for selecting and implementing a suitable
support or suspension of the installed control
valve and the pipeline.
Depending on the valve version and mount-
ing position, the valve, actuator and pipeline
must be supported or suspended.
Valves, which are not installed in the pipe-
line in the upright position with the actuator
on top, must be supported or suspended.
Vent plugs
Vent plugs are screwed into the exhaust air
ports of pneumatic and electropneumatic
devices. They ensure that any exhaust air
that forms can be vented to the atmosphere
(to avoid excess pressure in the device).
Furthermore, the vent plugs allow air intake
Installation
5-1
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