Samson 3246, Монтаж и эксплуатация

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EB 8046 EN 5-3
Installation
the 'Design and principle of operation'
section) have been installed or prepared
as necessary before installing the valve.
Risk of control valve damage due to incor-
rect insulation.
The insulation will not have any effect if it is
fitted incorrectly.
Î
Control valves with cover plates can be
insulated up to the cover plate.
Î
Control valves without cover plates must
only be insulated up to the bonnet flange
of the body.
Î
Do not insulate valves mounted to com -
ply with NACE MR0175 requirements
and which have nuts and bolts that are
not suitable for sour gas environments.
Proceed as follows:
Î
Lay out the necessary material and tools
to have them ready during installation
work.
Î
Flush the pipelines.
The plant operator is responsible for clean-
ing the pipelines in the plant.
Î
For steam applications, dry the pipelines.
Moisture will damage the inside of the
valve.
Î
Check any mounted pressure gauges to
make sure they function properly.
Î
When the valve and actuator are al-
ready assembled, check the tightening
torques of the bolted joints (
u
AB 0100).
Components may loosen during trans-
port.
5.3 Mounting the device
The activities listed below are necessary to
install the valve and before it can be started
up.
Risk of valve damage due to excessively
high or low tightening torques.
Observe the specified torques when tighten -
ing control valve components. Excessive
tightening torques lead to parts wearing out
more quickly. Parts that are too loose may
cause leakage.
Î
Observe the specified tightening torques
(
u
AB 0100).
Risk of valve damage due to the use of
unsuitable tools.
Î
Only use tools approved by SAMSON
(
u
AB 0100).
5.3.1 Mounting the external
anti-rotation fixture
Before mounting the actuator, the external
anti-rotation fixture must be mounted onto
the plug stem in some cases. The valve must
be closed beforehand.
For SAMSON Type 3271 and Type 3277
Actuators with Type 3273 Hand-operated
NOTICE !
Note
NOTICE
!
NOTICE
!