Trim Maintenance; Disassembly - Fisher EAS easy-e Instruction Manual

Instruction Manual
D100397X012
15. Mount the actuator on the valve assembly and reconnect the actuator and valve stem according to the procedure
in the appropriate actuator instruction manual.

Trim Maintenance

WARNING
Refer to the WARNING at the beginning of the Maintenance section in this instruction manual.
CAUTION
In the following applicable procedures, to avoid damaging parts, do not grip the bellows shroud or other parts of the
stem/bellows assembly. Grip only the flat areas on the stem where it extends out of the top of the bellows shroud.
Except where indicated, key numbers in this section are referenced in figure 13 for standard NPS 1/2 through 6
constructions, figure 14 for NPS 8 ES valves, figure 15 for Whisper Trim III cage detail, and figure 16 for WhisperFlo
trim.

Disassembly

1. Remove the actuator and the bonnet according to steps 1 through 6 of the Replacing Packing procedure of the
Maintenance section.
Table 4. Recommended Torque for Packing Flange Nuts (Not for Spring‐Loaded Packing)
VALVE STEM DIAMETER
PRESS‐URE
RATING
mm Inches
9.5 3/8
12.7 1/2
19.1 3/4
25.4 1
31.8 1‐1/4
GRAPHITE TYPE PACKING
Minimum Torque
NSm LbfSin
CL125,
3 24
150
CL250,
4 36
300
CL600 5 48
CL125,
5 48
150
CL250,
7 60
300
CL600 10 84
CL125,
11 96
150
CL250,
14 120
300
CL600 20 180
CL300 24 216
CL600 34 300
CL300 33 288
CL600 45 396
Maximum Torque Minimum Torque
NSm LbfSin NSm
5 48 1
7 60 2
8 72 3
8 72 3
10 84 3
14 120 5
16 144 5
20 180 7
30 264 10
37 324 12
50 444 16
49 432 16
66 588 22
ES Valve
July 2017
PTFE TYPE PACKING
Maximum Torque
LbfSin NSm LbfSin
12 3 24
18 3 30
24 4 36
24 4 36
30 5 42
42 7 60
48 8 72
60 10 90
90 15 132
108 16 144
144 24 216
144 24 216
192 33 288
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