38
EB 8059 EN
Servicing
ing sure that the largest V-shaped port of
the V-port plug faces toward the valve
outlet. See section 5.1.
7.
Insert the bolts (13) through the threaded
flanges (57, 111) and tighten them, ob
-
serving the tightening torque.
8. Tighten the body nuts (14) gradually in a
crisscross pattern. Observe tightening
torques.
9. Mount actuator. See associated actuator
documentation.
10. Adjust lower or upper signal bench
range. See associated actuator docu-
mentation.
7.3 Replacing the packing
Risk of control valve damage due to incorrect
service or repair.
The packing can only be replaced when all
the following conditions are met:
−
The valve does not have a bellows seal.
−
The standard packing or Form HT packing
is installed in the valve.
To replace the packing in other valve ver
-
sions, contact SAMSON's After‑sales Service
department.
7.3.1 Standard version
1. Remove the actuator from the valve. See
associated actuator documentation.
2. Unscrew the castellated nut (92) and lift
the yoke (3) off the intermediate piece
(2).
3.
Undo the body nuts (14) gradually in a
crisscross pattern. Remove the bolts (13).
4. Unscrew the intermediate piece (2) to-
gether with the plug (5) from the body
(1).
5. Replace the body gasket (17). See sec-
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
intermediate piece (2).
9. Make sure that the guide bushing (7) is
not damaged. If necessary, replace the
guide bushing using a suitable tool.
10.
Pull all the packing parts out of the pack
-
ing chamber using a suitable tool.
11. Renew damaged parts. Clean the pack-
ing chamber thoroughly.
12. Apply a suitable lubricant to all the pack-
ing parts and to the plug stem (5).
13.
Slide the plug with plug stem (5) into the
intermediate piece (2).
14.
Push the intermediate piece (2) together
with the plug (5) into the body (1).
Make sure that the threaded flanges (57,
111) are positioned parallel to each oth-
er and that their bolt holes are aligned
exactly above one another.
Version with V‑port plug:
place the in-
termediate piece (2) onto the valve body,
NOTICE
!
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