Samson 3321 - Replacing the Packing

40 EB 8111/8112 EN
Servicing
7.2 Replacing the packing
The Type3321 Valve is either tted with a
standard or FormD packing. The packings
have an identical design, but contain differ-
ent materials.
7.2.1 For mounting using
crossbeam and central
nut (FormB)
1. Remove the actuator from the valve. See
associated actuator documentation.
To remove the actuator from the valve, the
central nut (98) must be loosened.
2. Undo the body nuts (14) gradually in a
criss-cross pattern.
3. Lift the ange (97), ange bonnet (96),
and plug with plug stem (5) off the body
(1).
4. Unscrew the threaded bushing (8).
5. Pull the plug with plug stem (5) out of the
ange bonnet (96).
6. Pull all the packing parts out of the pack-
ing chamber using a suitable tool.
7. Renew damaged parts. Clean the pack-
ing chamber thoroughly.
8. Apply a suitable lubricant to all the pack-
ing parts and to the plug stem (5).
9. Slide the plug with plug stem (5) into the
valve body (1).
10. Place the ange bonnet (96) and the
ange (97) over the plug stem and studs
(13) onto the body.
11. Carefully slide the packing parts over the
plug stem into the packing chamber us-
ing a suitable tool. Make sure to observe
the proper sequence (see Fig.11).
12. Press the plug (5) rmly into the seat (4),
while fastening down the ange bonnet
(96) with the body nuts (14). Tighten the
nuts gradually in a criss-cross pattern.
Observe tightening torques.
13. Screw in the threaded bushing (8) and
tighten it. Observe tightening torques.
14. Mount actuator. See associated actuator
documentation.
To fasten the actuator onto the valve, the
central nut (98) must be tightened. Observe
tightening torques.
Note
Note
Note