Samson 3251-E, Mounting And Operating Instructions

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5-2 EB 8052-E EN
Installation
To ensure that the valve functions properly,
proceed as follows:
Î
Observe the recommended 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.
Î
Install the valve allowing sufficient space
to remove the actuator and valve or to
perform service and repair work on
them.
Mounting position
Generally, we recommend installing the
valve with the actuator upright and on top of
the valve.
Î
Contact SAMSON if the mounting posi-
tion is not as specified above.
Î
In versions in valve size NPS 4 and larg-
er, the control valve must be installed
with the actuator on top:
Support or suspension
Depending on the valve version and mount-
ing position, the valve, actuator and pipeline
must be supported or suspended.
Î
Valves, which are not installed in the
pipeline in the upright position with the
actuator on top, must be supported or
suspended.
The plant engineering company is responsi-
ble for selecting and implementing a suitable
support or suspension of the installed control
valve and the pipeline.
Valve accessories
Î
During connection of valve accessories,
make sure that they are easily accessible
and can be operated safely from the
work position.
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
to prevent a vacuum from forming in the
device.
Î
Locate the vent plug on the opposite side
to the work position of operating person-
nel.
5.2 Preparation for installation
Before installation, make sure the following
conditions are met:
− The valve is clean.
− The valve and all valve accessories (in-
cluding piping) are not damaged.
− The valve data on the nameplate (type
designation, valve size, material, pres-
sure rating and temperature range)
match the plant conditions (size and
Note