Samson 3241, Монтаж и эксплуатация

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34 EB 8012 EN
Mounting and start-up
6. Depending on the field of application,
allow the valve to cool down or heat up
to reach ambient temperature before
start up.
7. Slowly open the shut-off valve in the
pipeline after the valve has been in-
stalled.
NOTICE
Risk of valve damage due to a sud-
den pressure increase and resulting
high flow velocities.
Slowly open the shut-off valve in the
pipeline during start‑up.
8. Check the valve to ensure it functions
properly.
Version with welding ends
1. Proceed as described for “Version with
flanges” (steps 1 to 3).
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. Proceed as described for “Version with
flanges” (steps 6 to 8).
5.3 Quick check
SAMSON valves are delivered ready for
use. To test the valve's ability to function, the
following quick checks can be performed:
Tight shut-off
1. Close the valve.
2. Slowly open the shut-off valve in the
pipeline.
NOTICE
Risk of valve damage due to a sud-
den pressure increase and resulting
high flow velocities.
Slowly open the shut-off valve in the
pipeline during start‑up.
3. Check the valve for leakage to the atmo-
sphere (visual inspection).
Travel motion
The movement of the actuator stem must be
linear and smooth.
Î
Open and close the valve, observing the
movement of the actuator stem.
Î
Apply the maximum and minimum con-
trol signals to check the end positions of
the valve.
Î
Check the travel reading at the travel in-
dicator scale.