Emerson Process Management FISHER 657 - Manual (Page 21)

Instruction Manual
D100306X012
657 Actuator (30-70 and 87)
December 2010
21
Figure 8. Fisher 657 Size 87 Actuator
APPLY LUB
50A8767-C
Parts List
Note
Part numbers are shown for recommended spares only. For part
numbers not shown, contact your Emerson Process Management sales
office.
Actuator Assembly
(figures 6, 7, or 8)
Key Description Part Number
1 Upper Diaphragm Casing
2* Diaphragm
Molded nitrile/nylon
Standard construction
Size 30
2E791902202
Sizes 34 & 40 2E670002202
Sizes 45 & 50 2E859502202
Sizes 46 & 60 2E859702202
Sizes 70 & 87 2N126902202
With down travel stop (style 2)
Size 30
2E800002202
Sizes 34 & 40 2E669902202
Sizes 45 & 50 2E859602202
Key Description Part Number
Sizes 46 & 60 2E859802202
Sizes 70 & 87 2N130902202
Molded silicone/polyester
Standard Construction
Size 30
18B2713X082
Sizes 34 & 40 18B2713X092
Sizes 45 & 50 18B2713X102
Sizes 46 & 60 18B2713X112
Sizes 70 & 87 18B2713X122
With down travel stop (style 2)
Sizes 70 & 87
2N1309X0012
Fluorocarbon/Aramid
Size 30
1F354202402
Sizes 34 & 40 1F444302402
Sizes 45 & 50 1F354102402
Sizes 46 & 60 1F4444X0022
3 Cap Screw
4 Diaphragm Plate
5 Lower Diaphragm Casing
6 Actuator Spring See following table
7 Travel Stop Cap Screw
8 Cap Screw
9 Yoke
10 Actuator Stem
11 Spring Seat
12 Spring Adjuster
13 Lower Diaphragm Plate
14 Travel Indicator Disk, SST
15 Stem Nut
16 Stem Jam Nut
17 Self‐Tapping Screw
*Recommended spare parts