Samson 3251, Монтаж и эксплуатация

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EB 8052 EN 31
Mounting and start-up
−
Remove the mounted actuator before
mounting the other actuator (see associat -
ed actuator documentation).
−
Preloading the actuator springs increases
the thrust of a pneumatic actuator and re-
duces the travel range of the actuator (see
associated actuator documentation).
5.2 Installing the valve into the
pipeline
5.2.1 Checking the installation
conditions
Pipeline routing
The inlet and outlet lengths vary depending
on the process medium. To ensure the control
valve functions properly, follow the installa-
tion instructions given below:
Î
Observe the inlet and outlet lengths (see
Table 5). Contact SAMSON if the valve
conditions or state of the medium process
deviate.
Î
Install the valve free of stress and with the
least amount of vibrations as possible. If
necessary, attach supports to the valve.
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.
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
Depending on the valve version and mount-
ing position, the control valve and pipeline
must be supported or suspended. The plant
engineering company is responsible in this
case.
Premature wear and leakage due to insuffi -
cient support or suspension.
In the following versions, the control valve
must be supported or suspended:
−
Valves that are not installed with the actua -
tor in the upright position on top of the
valve.
Attach a suitable support or suspension to
the valve.
Vent plugs
Vent plugs are screwed into the exhaust air
ports of pneumatic and electropneumatic de-
vices. They ensure that any exhaust air that
forms can be vented to the atmosphere (to
avoid excess pressure in the device). Further-
Note
NOTICE !