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EB 8257 EN
41
Servicing
6. Unthread the stem connector nut (9) and
lock nut (10) from the plug stem.
7. Unscrew the threaded bushing (8).
8.
Pull the plug with plug stem (5) out of the
bonnet (2).
9.
Replace the packing. See section 7.3.
10. Make sure that the guide bushing (7) is
not damaged. If necessary, replace the
guide bushing using a suitable tool.
11. Remove clamping element (63) and flow
divider (62).
12. Unscrew the seat (4) using a suitable
tool.
13.
Apply a suitable lubricant to the thread
and the sealing cone of the new seat.
14. Screw in the seat (4). Observe tightening
torques.
15. Clamp the flow divider (62) on the seat.
Mount the clamping element (63).
16. Slide the new plug with plug stem (5) in
-
to the bonnet (2).
17. Place the bonnet (2) together with the
plug stem and plug (5) onto the body
(1).
Version with V-port plug:
place the bon-
net (2) onto the valve body, making sure
that the largest V-shaped port of the
V-port plug faces toward the valve outlet.
See section 5.1.
18. Firmly press the plug (5) into the seat (4).
Fasten down the bonnet (2) with the
body nuts (14). Tighten the nuts gradual
-
ly in a crisscross pattern. Observe tight-
ening torques.
19.
Screw in the threaded bushing (8) and
tighten it. Observe tightening torques.
20. Place yoke (3) on the bonnet (2) and fas
-
ten tight using the castellated nut (92).
21. Loosely screw the lock nut (10) and stem
connector nut (9) onto the plug stem.
22.
Mount actuator. See associated actuator
documentation.
23. Adjust lower or upper signal bench
range. See associated actuator docu-
mentation.
Содержание 3286
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