Samson 3595, Монтаж и эксплуатация

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EB 8079 EN 5-5
Installation
5.3.1 Mounting the actuator
onto the valve
Risk of personal injury due to preloaded
springs.
Actuators with preloaded springs are under
tension. They can be identified 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 (see associated actuator
documentation).
Depending on the version, SAMSON control
valves are either delivered with the actuator
already mounted on the valve or the valve
and actuator are delivered separately. When
delivered separately, the valve and actuator
must be assembled together on site.
Î
To mount the actuator, proceed as de -
scribed in the associated actuator docu -
mentation.
5.3.2 Installing the valve into
the pipeline
Premature wear and leakage due to insuffi -
cient support or suspension.
Î
Support or suspend the valve sufficiently
at suitable points.
a) Version with flanges
1. Close the shut-off valves in the pipeline
at the inlet and outlet of the plant section
while the valve is being installed.
2. Prepare the relevant section of the pipe-
line for installing the valve.
3. Remove the protective caps from the
valve ports before installing the valve.
4. Lift the valve using suitable lifting equip-
ment to the site of installation (see the
'Lifting the valve' section). Observe the
flow direction through the valve. The ar-
row on the valve indicates the direction
of flow.
5. Make sure that the correct flange gaskets
are used.
6. Bolt the pipe to the valve free of stress.
7. Attach a support or suspension on the
valve, if necessary.
b) Version with welding ends
1. Proceed as described above under “Ver-
sion with flanges”, steps 1 to 4.
2. Completely retract the actuator stem to
protect the plug from sparks during weld-
ing.
3. Weld the valve free of stress into the
pipeline.
4. Attach a support or suspension on the
valve, if necessary.
WARNING !
NOTICE !