9-8 EB 8015 EN
Servicing
9.4.2 Replacing the packing
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 ≤DN150.
− 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. Undo the body nuts (14) gradually in a
crisscross pattern.
2. Lift the ange (2) and plug with plug
stem (5) off the body (1).
3. Unthread the stem connector nut (9) and
lock nut (10) from the plug stem.
4. Unscrew the threaded bushing (8).
NOTICE
!
16
12
16
15.2
15
15.1
11
2 Valve bonnet
5 Plug with plug stem
8 Threaded bushing (packing nut)
11 Spring
12 Washer
15 Packing
15.1 Spacer ring with retaining ring
15.2 Seals
16 Packing rings
16
12
11
2
5
Fig.9-2: Standard packing (left) and ADSEAL packing (right)
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