Instruction Manual
D103175X012
GX Valve and Actuator
April 2011
21
As shown in figure 28, the repair nameplate provides locations for maintenance personnel to record trim data, such as:
D
Date of maintenance
D
Trim material
D
Port diameter
D
Flow capacity (C
v
/ K
v
)
D
Flow characteristic
D
Actuator Action ATO/ATC
Bellows Maintenance
This section provides instruction on the replacement of the bellows / stem assembly (see key 49 in figure 23).
1. Remove the actuator, bonnet assembly as described in the Replacing Packing section (steps 1 through 10).
2. Remove the plug/stem assemblies as described in the Valve Trim Disassembly section (steps 2 through 6).
3. To install the new bellows / stem assembly (key 49), perform the Valve Trim Assembly (step 3).
Figure 6. Fisher GX Handwheel Assembly
GE11642‐1
AIR‐TO‐CLOSE, SPRING‐TO‐OPEN
AIR‐TO‐OPEN, SPRING‐TO‐CLOSE
STUD AND
NUT (4)
STUD AND
NUT (4)
LOCKING
SCREW
LOCKING
SCREW
