Samson 3222 Series - Removal; Removing the Valve from the Pipeline

EB 5866 EN 11-1
Removal
11 Removal
The work described in this section is only to
be performed by personnel appropriately
qualied to carry out such tasks.
Risk of burn injuries due to hot components
and pipeline.
Valve components and the pipeline may be-
come very hot. Risk of burn injuries.
Î Allow components and pipelines to cool
down.
Î Wear protective clothing and safety
gloves.
Crush hazard arising from actuator and
plug stem moving (Type3222/2780
Pneumatic Control Valve).
Î Do not insert hands or nger into the
yoke while the air supply is connected to
the actuator.
Î Before working on the control valve, dis-
connect and lock the pneumatic air sup-
ply as well as the control signal.
Î Do not impede the movement of the actu-
ator and plug stem by inserting objects
into the yoke.
Î Before unblocking the actuator and plug
stem after they have become blocked
(e.g. due to seizing up after remaining in
the same position for a long time),
release any stored energy in the actuator
(e.g. spring compression). See
associated actuator documentation.
Risk of personal injury due to residual
process medium in the valve.
While working on the valve, residual process
medium can escape and, depending on its
properties, may lead to personal injury, e.g.
burns.
Î Wear protective clothing, safety gloves
and eye protection.
Risk of personal injury due to preloaded
springs (Type3222/2780 Pneumatic
Control Valve).
Actuators with preloaded springs are under
tension. They can be identied by the long
bolts protruding from the bottom of the actu-
ator.
Î Before starting any work on the actuator,
relieve the compression from the pre-
loaded springs.
Before removing the valve, make sure the fol-
lowing conditions are met:
− The control valve is put out of operation
(see the 'Decommissioning' section).
11.1 Removing the valve from
the pipeline
1. Support the control valve to hold it in
place when separated from the pipeline.
2. Version with threaded ends (female/
male thread) or anges: undo the ange
joint or screw connection.
WARNING
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WARNING
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WARNING
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WARNING
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WARNING
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WARNING
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