Samson 3321, Монтаж и эксплуатация

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30 EB 8111/8112 EN
Mounting and start-up
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 here.
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 upright on top of the valve.
Attach a suitable support or suspension to
the valve.
Vent plug
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 -
more, the vent plugs allow air intake to pre -
vent a vacuum from forming in the device.
Î
Locate the vent plug on the opposite side
to the workplace of operating personnel.
Î
On mounting valve accessories, make
sure that they can be operated from the
workplace of the operating personnel.
The workplace of operating personnel is the
location from which the valve, actuator and
any mounted valve accessories can be ac-
cessed to operate them.
5.2.2 Additional fittings
Strainers
We recommend installing a SAMSON
strainer upstream of the valve. It prevents sol
-
id particles in the process medium from
damaging the valve.
Bypass and shut-off valves
We recommend installing a shut-off valve
both upstream of the strainer and down-
stream of the valve and setting up a bypass
line. The bypass line ensures that the plant
does not need to be shut down for service
and repair work on the valve.
Insulation
Only insulate control valves with insulating
section up to the bonnet flange of the valve
body for medium temperatures below 0 °C
(32 °F) and above 220 °C (428 °F).
Safety guard
To reduce the crush hazard arising from
moving parts (actuator and plug stem), a
safety guard can be installed.
NOTICE
!
Note