9-8
EB 8061 EN
Servicing
See relevant information under 'Mount-
ing the actuator onto the valve' in the 'In-
stallation' section.
6. Firmly press the plug (5) into the seat (4).
Fasten down the bonnet (2) with the top
body nuts (14). Tighten the nuts gradual-
ly in a crisscross pattern. Observe tight-
ening torques.
b) Version with insulating
section or bellows seal
1. Undo the top body nuts (14) gradually in
a crisscross pattern.
2. Lift the insulating section (21) and plug
with plug stem (5) off the body (1).
3. Remove the top gasket (17). Carefully
clean the sealing faces in the valve body
(1) and on the insulating section (21).
4. Insert a new gasket (17) into the body.
5. Place the insulating section (21) onto the
body.
Version with V-port plug:
place the insu-
lating section (21) onto the valve body,
making sure that the largest V-shaped
port of the V-port plug faces towards the
valve outlet.
Version with perforated plug:
place the
insulating section (21) onto the insulating
section, making sure that the hole of the
plug that releases the flow first faces to-
ward the valve outlet.
See relevant information under 'Mount-
ing the actuator onto the valve' in the 'In-
stallation' section.
6. Firmly press the plug (5) into the seat (4).
Fasten down the insulating section (21)
with the top body nuts (14). Tighten the
nuts gradually in a crisscross pattern.
Observe tightening torques.
9.4.2 Replacing the bottom
gasket
Risk of control valve damage due to incor-
rect servicing.
Î
The gasket can only be replaced when
all the following conditions are met:
− The valve size is
≤
NPS 4.
− The valve does not have a balanced
plug.
− The valve does not have a flow divid-
er.
Î
To replace the gasket in other valve ver-
sions, contact our after-sales service.
1. Undo the bottom body nuts (14) gradual-
ly in a crisscross pattern.
2. Remove the flange (100) from the body
(1).
3. Remove the bottom gasket (17). Carefully
clean the sealing faces in the valve body
(1) and on the flange (100).
4. Make sure that the top guide bushing (7)
is not damaged. If necessary, replace the
guide bushing using a suitable tool.
5. Insert a new gasket (17) into the flange.
6. Place the flange (100) onto the body.
Make sure that the plug stem (5) is prop-
erly seated in the guide.
NOTICE
!
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