Samson 3510, Монтаж и эксплуатация

Страница: 26 / 48

26 EB 8091-1 EN
Mounting and start-up
3. Lift the valve to the site of installation.
Observe the flow direction through the
valve. The arrow on the valve indicates
the direction of flow.
4. Make sure that the correct gaskets are
used on the end connections.
5. Bolt the pipe to the valve free of stress.
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.
Risk of valve damage due to a sudden pres-
sure increase and resulting high flow veloci -
ties.
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
female thread or 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 fe-
male thread or 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.
Risk of valve damage due to a sudden pres-
sure increase and resulting high flow veloci -
ties.
Slowly open the shut-off valve in the pipeline
during start-up.
3. Check the valve for leakage (visual in-
spection).
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.
Fail-safe position
Î
Shut off the signal pressure line.
Î
Check whether the valve moves to the
fail-safe position.
NOTICE
!
NOTICE !