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EB 2517 EN
5-7
Installation
Î
Bellows actuator DN 65 to 100
−
Remove the crossbeam (8) from the
valve.
−
Unscrew the pillars (8.1).
−
Screw the pillars (8.1) into the threaded
holes (8.3) of the actuator flange as far
as they will go.
−
Push the actuator with actuator stem (11)
onto the spigots of the bellows (5.1).
−
Fasten the pillars (8.1) with the nuts (8.2)
onto the valve flange. Observe the speci
-
fied tightening torques (see 'Tightening
torques' in Annex).
7. Mount the control line (17) onto the valve
and actuator. Observe the specified
tightening torques (see 'Tightening
torques' in Annex).
Î
With diaphragm actuators
−
For
steam
or
liquids above 150 °C
in-
stall the compensation chamber and fill it
with the process medium. Observe the
specified tightening torques (see 'Tighten
-
ing torques' in Annex).
8. Slowly open the shut-off valves in the
pipeline after the regulator has been in-
stalled.
5.3.2 Cleaning the pipeline
We recommend additionally flushing the
pipeline with installed regulator before start-
up.
Î
Unscrew the control line (17) from the
valve body.
Î
Seal the valve body with G ¼ stoppers
(accessories: stopper 8323-0030 and
seal 8412-0771).
Î
Observe the mesh size of the upstream
strainer for the maximum particle size.
Use strainers to suit the process medium.
Î
Check the strainer for dirt each time the
pipeline is flushed and clean it, if neces
-
sary.
If the regulator malfunctions due to clogging
after flushing the pipeline, proceed as de
-
scribed in the 'Troubleshooting' section.
Содержание 41-73 Series
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