Emerson Fisher Control-Disk NPS 14 CL150 Instruction Manual page 12

Control-Disk NPS 14-36
April 2011
Figure 7. Anti‐Blowout Design Details
CUTAWAY, INTERNAL DETAILS
C0758‐1
CAUTION
Never use a wrench or pliers on the splined (upper) shaft (key 3). A damaged shaft could cut the packing and allow leakage.
1. Before loosening any parts on the valve, release the pressure from the pipeline. Then, remove the hex nuts (key 15)
and lift off the packing follower (key 11).
2. Remove the hex jam nuts (key 17) and the anti‐blowout flange (key 10). Remove the packing follower (key 12).
Refer to figure 7 for details of the anti‐blowout design parts.
The packing is now accessible.
3. Use a packing extractor to remove packing. Insert the corkscrew‐like end of the tool into the first piece of packing
and pull firmly to remove the packing. Repeat this process until all packing parts have been removed.
12
HEX
NUT
PACKING
FOLLOWER
BELLEVILLE
SPRINGS
PACKING
CUTAWAY, ENVIRO-SEAL
34B7524‐B
PACKING ASSEMBLY
Instruction Manual
D103545X012
STUD
HEX
JAM
NUT
ANTI
BLOWOUT
FOLLOWER