Fisher 657 User Manual
657 Size 80 and 100 Actuators
Instruction Manual
Form 1909
August 2006
August 2006
13
Parts Ordering
Each actuator has a serial number stamped on the
nameplate. Always refer to this number when
corresponding with your Emerson Process
Management sales office regarding replacement
parts or technical information. Also, always refer to
the 11-character part number of each needed part
as found in the following parts list.
nameplate. Always refer to this number when
corresponding with your Emerson Process
Management sales office regarding replacement
parts or technical information. Also, always refer to
the 11-character part number of each needed part
as found in the following parts list.
WARNING
Use only genuine Fisher replacement
parts. Components that are not
supplied by Emerson Process
Management should not, under any
circumstances, be used in any Fisher
valve, because they will void your
warranty, might adversely affect the
performance of the valve, and might
jeopardize worker and workplace
safety.
parts. Components that are not
supplied by Emerson Process
Management should not, under any
circumstances, be used in any Fisher
valve, because they will void your
warranty, might adversely affect the
performance of the valve, and might
jeopardize worker and workplace
safety.
Note
Neither Emerson, Emerson Process
Management, Fisher, nor any of their
affiliated entities assumes
responsibility for the selection, use
and maintenance of any product.
Responsibility for the selection, use,
and maintenance of any product
remains with the purchaser and
end-user.
Management, Fisher, nor any of their
affiliated entities assumes
responsibility for the selection, use
and maintenance of any product.
Responsibility for the selection, use,
and maintenance of any product
remains with the purchaser and
end-user.
Parts List
Note
Part numbers are shown for recommended spares
only. For part numbers not shown, contact your
Emerson Process Management sales office.
only. For part numbers not shown, contact your
Emerson Process Management sales office.
Type 657 Sizes 80 & 100
Key
Description
Part Number
1
Upper Diaphragm Casing
2*
Diaphragm
Size 80
Nitrile
1R6375X0072
Silicone
18B2713X132
Size 100, nitrile & TPES (thermoplastic polyester)
20A2551X012
3
Cap Screw
Key
Description
Part Number
4
Diaphragm Plate
5
Lower Diaphragm Casing
5
Lower Diaphragm Casing, Yoke, &
Tie Rod Ass’y
6
Spring
See tables
8
Cap Screw
9
Yoke
10
Actuator Stem
11
Spring Seat
12
Adjusting Screw
13
Backup Plate
14
Travel Indicator
16
Hex Jam Nut
17
Machine Screw
18
Travel Indicator Scale
19
Nameplate
20
Drive Screw
21
Actuator Tie Rod
22
Cap Screw
23
Hex Nut
26
Stem Connector Ass’y
28
Cap Screw
29
Spring Case
33
Pipe Bushing
34
Upper Sleeve
35
Thrust Bearing
36
Adjusting Flange
60
Cover Band Ass’y
62
Cap Screw
63
Hex Nut
88
Tie Rod Washer
89
Hex Nut
91
Spring Guide
92
Cap Screw
106
Washer
107
Shroud Plate
108
Self-tapping screw
109
Cap Screw
110
Diaphragm Retainer
111*
Seal Bushing, brass
Size 100
20A2582X012
112*
O-Ring, nitrile (2 req’d) Size 100
1H8627X0042
113*
O-Ring, nitrile Size 100
1R834206992
114
Hex Nut
115
Hex Jam Nut
116
Actuator Stem Extension
117
Washer
118
Retaining Ring
120
Hex Bushing
121
Lifting Pin
123
Diaphragm Casing Cover
128
Vent Ass’y
241
Lithium grease (not furnished with actuator)
---
244
Anti-seize lubricant (not furnished with actuator)
---
245*
O-Ring, nitrile Size 100 only
1C339006992
*Recommended spare parts