Replacing The Packing - Samson EB 8061 EN Translation Of Original Instructions

7. Fasten down the flange with the bottom
body nuts (14). Tighten the nuts gradual-
ly in a crisscross pattern. Observe tight-
ening torques.
9.4.3

Replacing the packing

NOTICE
!
Risk of control valve damage due to incor-
rect servicing.
Î The packing 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 bellows
seal.
− The standard or ADSEAL packing is
installed in the valve.
Î To replace the packing in other valve ver-
sions, contact our after-sales service.
a) Standard version
Standard packing (PTFE)
1. Unscrew the castellated nut (92) and lift
the yoke (3) off the bonnet (2).
2. Undo the top body nuts (14) gradually in
a crisscross pattern.
3. Lift the bonnet (2) and plug with plug
stem (5) off the body (1).
4. Unscrew the stem connector nut (9) and
lock nut (10) from the plug stem.
5. Unscrew the threaded bushing (8).
EB 8061 EN
6. Pull the plug with plug stem (5) out of the
bonnet (2).
7. Pull the entire packing out of the packing
chamber using a suitable tool.
8. Renew damaged parts. Clean the pack-
ing chamber thoroughly.
9. Apply a suitable lubricant to all the pack-
ing parts and to the plug stem (5).
10. Slide the plug with plug stem (5) into the
bonnet (2).
11. Place the bonnet (2) together with the
plug stem and plug (5) onto the body.
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 towards the valve out-
let.
Version with perforated plug: place the
bonnet (2) onto the valve body, making
sure that the hole of the plug that releas-
es the flow first faces toward the valve
outlet.
See relevant information under 'Mount-
ing the actuator onto the valve' in the 'In-
stallation' section.
12. Carefully slide the packing parts over the
plug stem into the packing chamber us-
ing a suitable tool. Observe the proper
sequence (see Fig. 9-2).
13. 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.
Servicing
9-9