Samson 3254, Монтаж и эксплуатация

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EB 8060 EN 5-15
Installation
2. Loosen the screws on the travel indicator
scale.
3. Align the travel indicator scale.
4. Fix the travel indicator scale into place
by tightening the screws.
5.3.3 Installing the valve into
the pipeline
Risk of valve damage due to work being
carried out by personnel not qualified for
such tasks.
The plant operator or specialist company
performing the welding is responsible for the
selection of the welding procedure and the
actual welding operations on the valve. This
also applies to any required heat treatment
to be performed on the valve.
Î
Only allow qualified welding personnel
to carry out welding operations.
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.
NOTICE
!
NOTICE
!