Product Bulletin
61.1:657
October 2004
657 and 667 Actuators
Type 657 and 667 Diaphragm Actuators
The Type 657 and 667 spring-opposed diaphragm
actuators (figure 1) position the valve plug in the
valve in response to varying controller or valve
positioner pneumatic output signals applied to the
actuator diaphragm. Zero setting of the actuator is
determined by the compression of the actuator
spring. Span is set by both the actuator spring rate
and the number of springs available. The Type 657
actuator is direct-acting; the Type 667 is
reverse-acting. These actuators are designed to
provide dependable on-off or throttling operation of
automatic control valves.
Features
D Application VersatilityFive actuator types in
eleven sizes are available for an extensive variety of
applications. Spring rates, travel stops, and manual
operators are available for nearly any control valve
application.
D Excellent Linearity Between Loading
Pressure and TravelA molded diaphragm travels
in a deep diaphragm casing, minimizing area change
throughout the travel.
D High Degree of Dynamic Stability and
Frequency ResponseA shallow casing on the
pressure side means reduced volume on that side,
thereby minimizing response time.
D High Thrust CapabilityThe molded
diaphragm allows maximum thrust for given
diaphragm size.
TYPE 657
ACTUATOR
TYPE 667
ACTUATOR
Figure 1. Types 657 and 667 Actuators Mounted on
easy-er Valves
D Cold Service ApplicationsEnhanced
product specifications for all sizes of Type 657 and
667 diaphragm actuators allow performance to
50_C (58_F). Use of a positioner is recommended
to ensure responsiveness in applications operating
below 40_C (40_F).
D Positive ConnectionsA split block stem
connection provides a solid transfer of motion while
allowing easy mounting. The absence of linkages
helps to avoid lost motion and inaccurate valve
positioning.
D100087X012
D Longer Service LifeRugged thick-walled
cast iron and steel construction provides increased
stability, corrosion protection, and protection from
deformation should over-pressurization occur.
W1916-3/IL
W2174-2/IL
www.Fisher.com
Product Bulletin
61.1:657
October 2004
657 and 667 Actuators
Contents
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Available Configurations . . . . . . . . . . . . . . . . . . . . . 2
Direct Action . . . . . . . . . . . . . . . . . . . . . . . . . 2
Reverse Action . . . . . . . . . . . . . . . . . . . . . . . 2
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Handwheels . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Adjustable Travel Stops . . . . . . . . . . . . . . . . 6
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . 13
Tables
Additional Specifications . . . . . . . . . . . . . . . 4
Volumetric Casing Displacement . . . . . . . . 5
Approximate Actuator Weights
(without handwheel) . . . . . . . . . . . . . . . . 5
Thrust Capabilities . . . . . . . . . . . . . . . . . . . . 6
Handwheel Specifications . . . . . . . . . . . . . . 9
Adjustable Travel Stop Styles . . . . . . . . . . 10
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
the actuator stem upward against the opposing
spring force. When this loading pressure is reduced,
the spring moves the actuator stem downward.
Should the loading pressure fail, the spring forces
the stem to the extreme downward position. These
actuators provide fail-closed action for
push-down-to-close valves and fail-open action for
push-down-to-open valves.
Type 667A reverse-acting actuator used on sliding
stem valves. Available in sizes 30 through 100 and
76. See figures 1, 2, 3, 8, and 9.
Type 667-4A Type 667 actuator in sizes 70 and
87, designed with 102 mm (4-inch) travel.
Accessories
Handwheels
Available Configurations
Direct Action
All Type 657 actuators are direct acting. Applying air
pressure to the upper diaphragm casing forces the
actuator stem downward. When this pressure is
reduced, the opposing spring force moves the
actuator stem upward. Should the loading pressure
fail, the spring forces the stem to the extreme
upward position. This provides fail-open action for
push-down-to-close valves and fail-closed action for
push-down-to-open valves.
Type 657A direct-acting actuator used on sliding
stem valves. Available in sizes 30 through 100. See
figures 1, 2, 3, 6, and 7.
Type 657-4A Type 657 actuator in sizes 70 and
87, designed with 102 mm (4-inch) travel.
Reverse Action
All Type 667 actuators are reverse acting. Applying
air pressure to the lower diaphragm casing forces
Handwheels for diaphragm actuators are often used
as adjustable travel stops. They also provide a ready
means of positioning the control valve in an
emergency. The specifications in tables 5 and 6
apply to handwheels on both 657 and 667 Series
actuators. For repeated or daily manual operation,
the unit should be equipped with a side-mounted
handwheel actuator.
Top-Mounted HandwheelsTypical Type 657 and
667 actuators with handwheels mounted on the
diaphragm case are shown in figure 3 (not available
on a Type 667 actuator, size 80). On the Type 657
actuator, the handwheel can be set to limit the travel
in the upward direction; on the Type 667 actuator,
travel in the downward direction can be restricted. A
Type P-2 travel stop (figure 5) is available for a Type
667 actuator, sizes 45-60 to limit travel in either the
upward or downward directions. An actuator with a
Type P-2 travel stop is limited to a maximum travel
of 19 mm (0.75 inch). The handwheel on the size
100 is similar in function to those on the smaller
sizes, but it uses a gear drive similar to the drive
employed on the integral side-mounted handwheels
(see figure 3).
Product Bulletin
61.1:657
October 2004
657 and 667 Actuators
DIAPHRAGM CASINGS
DIAPHRAGM
DIAPHRAGM PLATE
ACTUATOR SPRING
ACTUATOR STEM
SPRING SEAT
SPRING ADJUSTOR
STEM CONNECTOR
YOKE
TRAVEL INDICATOR DISK
INDICATOR SCALE
W0364-2/IL
W0363-2/IL
TYPE 667 SIZES 3087
TYPE 657 SIZES 3087
TYPE 657 SIZE 100
W0366-1/IL
Figure 2. Typical Actuators
Product Bulletin
61.1:657
October 2004
657 and 667 Actuators
Table 1. Additional Specifications for Type 657 and 667 Series Actuators
ACTUATOR
SIZE
EFFECTIVE
DIAPHRAGM
AREA
YOKE
BOSS
DIAMETER
STEM
DIA
cm2
MAXIMUM
TRAVEL
MAXIMUM
ALLOWABLE
THRUST(1)
mm
MAXIMUM
CASING PRESSURE FOR
ACTUATOR SIZING
657
667
Bar
30
297
54
9.5
19
10,231
8.6
3.8
9.6
7.6
34
445
54
9.5
29
10,231
4.5
4.8
5.2
6.2
40
445
71
12.7
38
12,010
4.5
4.8
5.2
6.2
45
677
71
12.7
51
25,132
3.4
4.5
4.1
5.2
46
1006
71
12.7
51
33,584
2.8
3.5
3.4
4.5
50
677
90
19.1
51
25,131
3.4
4.5
4.1
5.2
60
1006
90
19.1
51
30,246
2.8
3.5
3.4
4.5
39 142
39,142
38
3.8
34
3.4
45
4.5
41
4.1
30,246
---
3.4
---
4.1
63,392
3.4
3.4
4.1
4.1
88,075(4)
4.9(4)
4.9(4)
5.5(4)
5.5(4)
39 142
39,142
38
3.8
34
3.4
45
4.5
41
4.1
102
200 160
200,160
69
6.9
69
6.9
79
7.9
79
7.9
70(2)
1419
90
19 1
19.1
76(667)
1006
90
19.1
25.4
80
1761
127
87(2)
1419
127
25 4
25.4
100
2902
127H(5)
31.8
178
50.8
Inch2
31.8
76
102(3)
51
76
76
102(3)
Inch
Lb
Psig
30
46
2.125
0.375
0.75
2300
125
55
140
110
34
69
2.125
0.375
1.125
2300
65
70
75
90
40
69
2.8125
0.5
1.5
2700
65
70
75
90
45
105
2.8125
0.5
5650
50
65
60
75
46
156
2.8125
0.5
7550
40
55
50
65
50
105
3.5625
0.75
5650
50
65
60
75
60
156
3.5625
0.75
6800
40
55
50
65
8800
55
50
65
60
60
70(2)
220
3 5625
3.5625
0 75
0.75
76(667)
156
3.5625
0.75
1
80
273
87(2)
220
5H(5)
1.25
100
450
1.25
3
4(3)
2
3
3
4(3)
4
6800
---
50
---
14,150
50
50
60
60
19,800(4)
70(4)
70(4)
80(4)
80(4)
8800
55
50
65
60
45 000
45,000
100
100
115
115
1. These values are based on material limitations such as yoke, stem connection, diaphragm plate, and travel stop strengths.
2. Values also apply to Type 657-4 and Type 667-4 actuators.
3. For Type 657-4 and Type 667-4 actuator constructions.
4. Steel construction.
5. H=Heavy actuator-to-valve bolting.
MAXIMUM
DIAPHRAGM
CASING PRESSURE
657
667
Product Bulletin
61.1:657
October 2004
657 and 667 Actuators
Table 2. Volumetric Casing Displacement for the Type 657 and 667 Series Actuators
ACTUATOR
SIZE
CLEARANCE
VOLUME(1)
TRAVEL, mm
11
16
19
cm3
29
38
51
76
102
Casing Volume(2), cm3
30
540
918
1080
1180
---
---
---
---
---
34 and 40
934
1470
1700
1850
2330
2790
---
---
---
45 and 50
1560
---
2790
3000
3720
4420
5410
---
---
46, 60, and 76
2180
---
3880
4210
5280
6340
7740
---
---
70 and 87
3490
5240
5950
6420
7830
9240
11,110
14,880
18,570
80
100
4820
---
---
---
10,490
12,450
14,860
19,340
---
657
10,880
---
---
16,400
19,170
21,940
25,630
33,000
40,380
667
12,780
---
---
18,320
21,070
23,840
27,530
34,900
42,280
TRAVEL, INCH
Inch3
0.4375
0.625
0.75
1.125
1.5
Casing Volume(2), Inch3
30
34 and 40
45 and 50
46, 60, and 76
70 and 87
80
657
100
667
33
57
95
133
213
294
664
56
90
----320
-----
66
104
170
237
363
-----
72
113
183
257
392
--1002
--142
227
322
478
640
1170
--170
270
387
564
760
1339
----330
472
678
907
1564
--------980
1180
2014
--------1133
--2464
780
---
---
1118
1286
1455
1680
2130
2580
1. Clearance volume indicates casing volume at zero travel.
2. Includes clearance volume.
Table 3. Approximate Actuator Weights (without
handwheel)
ACTUATOR TYPE
ACTUATOR
SIZE
657
30
16
15
36
34
34
22
22
48
48
40
23
23
51
50
45
37
41
82
90
46
49
55
107
121
50
42
43
92
94
60
53
55
116
122
70
107
115
235
254
76
---
86
---
190
80
234
284
515
626
87
116
118
255
260
100
346
544
762
1200
667
657
Kg
667
Lb
Product Bulletin
61.1:657
October 2004
657 and 667 Actuators
Table 4. Thrust Capabilities(1) by Input Signal Range
TRAVEL
ACTUATOR
SIZE
mm
Bar
30
19
34
40
29
45
46
50
38
60
70
51
80
87
76
100
102
Inch
0 75
0.75
34
40
45
46
50
15
1.5
60
70
2
80
87
3
100
4
0.2-1
2250
1840
0.4-2
3890
3270
0.2-1
3380
3380
0.4-2
5830
5530
0.2-1
3380
2760
0.4-2
5530
3680
0.2-1
4670
4670
0.4-2
8410
8870
0.2-1
6940
6250
0.4-2
13,190
11,800
0.2-1
5140
3740
0.4-2
8410
7010
0.2-1
6940
4860
0.4-2
13,190
8330
0.2-1
7830
7830
0.4-2
18,590
13,700
0.2-1
10,110
11,250
0.4-2
18,950
19,680
0.2-1
6850
7830
0.4-2
18,590
13,700
0.2-1
16,010
8010
0.4-2
32,030
36,030
0.2-1
12,010
---
0.4-2
22,019
28,024
Psig
30
1 125
1.125
PRESSURE RANGE
TO ACTUATOR
DIAPHRAGM
THRUST
CAPABILITIES
657
667
Side-Mounted HandwheelsFigure 4 shows the
side-mounted handwheels (designated by the letters
MO) applicable to sizes 34 through 87, Type 657
and 667 actuators. Size 30 actuators do not have a
side-mounted handwheel available.
All side-mounted handwheels can be used to stroke
the valve in either direction at any point in the
actuator stem travel. Unlike the top-mounted
handwheel, the side-mounted handwheel can be
positioned to limit travel in either direction, but not
both at the same time. With the handwheel in the
neutral position, automatic operation is possible
throughout full valve travel. In any other position,
valve travel will be restricted. The handwheel is
furnished with a spring-loaded ball detent which
prevents vibration from changing the setting.
Lb
3-15
506
414
6-30
874
736
3-15
759
759
6-30
1311
1242
3-15
759
621
6-30
1242
828
3-15
1050
1050
6-30
1890
1995
3-15
1560
1404
6-30
2964
2652
3-15
1155
840
6-30
1890
1575
3-15
1560
1092
6-30
2964
1872
3-15
1760
1760
6-30
4180
3080
3-15
2272
2528
6-30
4260
4424
3-15
1540
1760
6-30
4180
3080
3-15
3600
1800
6-30
7200
8100
3-15
2700
---
6-30
4950
6300
1. For Size 76 Type 667 actuators, contact your Fisher sales office.
Clockwise rotation of the handwheel on the Type
657 actuator moves the actuator stem downward,
compressing the spring. Spring action returns the
stem as the handwheel is turned counterclockwise.
With the Type 667 actuator, counterclockwise
rotation moves the stem upward, and spring action
returns the stem on clockwise rotation.
Adjustable Travel Stops
Top-mounted adjustable travel stops are available
for 657 and 667 Series actuators. They are used to
limit travel in the up, down, or up and down
directions. Figure 5 illustrates the different
constructions. Table 7 locates the different style
constructions with actuator type and use.
Other
Accessories such as transducers, positioners,
position transmitters, air relays, volume boosters,
switching valves, lockup valves, limit switches, and
solenoid valves are also available for actuator
mounting. They are described in separate
publications. Contact your Fisher sales office for
details.
Product Bulletin
61.1:657
October 2004
657 and 667 Actuators
W0368-2/IL
W0369-2/IL
TYPE 657 ACTUATOR
(EXCEPT SIZE 100)
TYPE 667 ACTUATOR
(EXCEPT SIZES 80 AND 100)
W0370-1/IL
TOP VIEW
W0370-1/IL
TYPE 657 ACTUATOR SIZE 100
(GEAR DRIVEN)
Figure 3. Typical of Top-Mounted Handwheels
Product Bulletin
61.1:657
October 2004
657 and 667 Actuators
SECTION A-A
W0371-1/IL
W0372-1/IL
SIZES 70, 76, 80, AND 87
SIZES 34 THROUGH 60
Figure 4. Typical of Side-Mounted Handwheels for Type 657 and 667 Series Actuators
40A38A1211-E
40A8764-E
Figure 5. Adjustable Travel Stops
Product Bulletin
61.1:657
October 2004
657 and 667 Actuators
Table 5. Type 657 Handwheel Specifications
TOP-MOUNTED HANDWHEEL
TYPE 657
ACTUATOR
SIZE
Handwheel
Diameter
Turns Per
mm Travel
Rim Force(1)
mm
SIDE-MOUNTED HANDWHEEL
Maximum
Handwheel
Output
Force(3)
Handwheel
Diameter
Turns Per
mm Travel
Rim Force(1)
Maximum
Handwheel
Output
Force(3)
mm
30
171
0.3
190
6670
---
---
---
---
34 and 40
222
0.3
210
10,010
304
0.2
230
10,010
45 and 50
222
0.3
420
15,080
355
0.3
360
15,080
46 and 60
222
0.3
490
22,690
355
0.3
540
22,690
70 and 87
355
0.3
590
29,360
432
0.8
160
29,360
80
355
0.3
770
37,770
432
0.4
240
37,770
304
250
111,000
406
270
160,000
---
---
---
---
508
270
200,000
Inch
Turns Per
Inch Travel
Lb
Lb
Inch
Turns Per
Inch Travel
Lb
Lb
30
6.75
42
1500
---
---
---
---
34 and 40
8.75
48
2250
12
5.14
52
2250
45 and 50
8.75
95
3390
14
6.65
81
3390
46 and 60
8.75
110
5100
14
6.65
122
5100
70 and 87
14
132
6600
17
20
36
6600
80
14
173
8490
17
10
53
8490
12
144
56
25,000
16
144
60
36,000
---
---
---
---
20
144
60
45,000
100(2)
100(2)
1. Tangential handwheel force required to produce the handwheel output force shown. (Proportional to handwheel output force).
2. Top-mounted with gear drive.
3. Maximum force available to compress the actuator spring and close the valve.
Product Bulletin
61.1:657
October 2004
657 and 667 Actuators
Table 6. Type 667 Handwheel Specifications
TOP-MOUNTED HANDWHEEL
TYPE 667
ACTUATOR
SIZE
Handwheel
Diameter
mm
Turns
Per
mm
Travel
Rim
Force(1)
SIDE-MOUNTED HANDWHEEL
Maximum
Handwheel
Output
Force(3)
Handwheel
Diameter
TYPE 667
ACTUATOR
SIZE
Turns Per
mm Travel
Rim Force(1)
30
171
0.3
200
6670
30
---
---
---
---
34 and 40
222
0.3
230
10,010
34 and 40
304
0.2
230
10,010
222
0.2
460
17,790
355
0.2
430
26,690
45 and 50
355
03
0.3
360
15 080
15,080
222
0.2
460
17,790
355
0.2
430
26,690
46 and 60
355
03
0.3
540
22 690
22,690
45 and 50
46, 60, and
76
mm
Maximum
Handwheel
Output
Force(3)
355
0.2
520
26,690
762 mm Bar
0.2
410
44,480
70, 76, and
87
432
08
0.8
160
29 360
29,360
304
250
111,000
80
432
0.4
240
37,770
406
270
160,000
508
270
200,000
---
---
---
---
---
TYPE 667
ACTUATOR
SIZE
Inch
Turns
Per
Inch
Travel
Lb
Lb
TYPE 667
ACTUATOR
SIZE
Inch
Turns Per
Inch Travel
Lb
Lb
30
6.75
45
1500
30
---
---
---
---
34 and 40
8.75
51
2250
34 and 40
12
5.14
52
2250
8.75
103
4000
14
97
6000
45 and 50
14
6 65
6.65
81
3390
8.75
103
4000
14
97
6000
46 and 60
14
6 65
6.65
122
5100
70 and 87
100(2)
45 and 50
46, 60, and
76
70 and 87
14
118
6000
30 Inch Bar
92
10000
70, 76, and
87
17
20
36
6600
12
144
56
25,000
80
17
10
53
8490
16
144
60
36,000
20
144
60
45,000
---
---
---
---
---
100(2)
1. Tangential handwheel force required to produce the handwheel output force shown. (Proportional to handwheel output force).
2. Top-mounted with gear drive.
3. Maximum force available to compress actuator spring.
Table 7. Adjustable Travel Stop Styles (1)
30
34
40
45
46
50
60 and
667 Size 76
70
87
80
100
Type 657 Up Stop
NOTE 2
NOTE 2
Type 657 Down Stop
---
---
12, 13(3),
14
12, 13(3),
14
12, 13(3),
14
12, 13(3),
14
12
12
13(3)
---
10
10
10
---
NOTE 2
---
---
---
---
Actuator Size
Type 667 Up Stop
Type 667 Down Stop
Type 667 Up and
Down Stop
12, 13(3), 12, 13(3), 12, 13(3),
14
14
14
10
---
10
11
10
11
10
11(4),
P2(5)
1. See figure 5
2. Top-mounted handwheel, see figure 3.
3. Adjustable handwheel up stop.
4. 38 mm (1.5 inch) maximum travel.
5. Adjustable handwheel up and down stop, 19 mm (0.75 inch) maximum travel.
10
10
11(4),
P2(5)
10
11(4),
P2(5)
11(4),
P2(5)
Product Bulletin
61.1:657
October 2004
657 and 667 Actuators
W4917-1/IL
W4273-1/IL
Figure 6. Type 646 Electro-Pneumatic Transducer on Type
657 Actuator
W4930/IL
Figure 7. Type 3582i Valve Positioner on Type 657 Actuator
Figure 8. Type 4200 Position Transmitter on Type 667
Actuator
W3792-1/IL
Figure 9. Type 304 Electrical Valve Stem Position Switch on
Type 667 Actuator
11
Product Bulletin
61.1:657
October 2004
657 and 667 Actuators
Table 8. Dimensions
DIMENSION
REFERENCE
ACTUATOR SIZE
30
34
40
45
46
47
50
60
70
76
80
87
100
-----
mm
657, -4
667, -4
0
38
25
38
25
38
38
38
38
38
38
38
38
38
38
38
38
38
--38
-----
38
38
289
333
333
406
473
536
406
473
536
473
635
536
729
54
64
71
71
71
71
90
90
90
90
127
127
127(2)
657
657-4
657MO(1)
667
667-4
667MO
440
--440
498
--498
548
--548
659
--659
656
--656
-------
722
--722
722
--722
840
994
976
-------
1075
--1183
938
1089
1057
NOTE 3
--NOTE 4
478
--478
573
--573
594
--594
768
--768
748
--748
-------
784
--784
784
--784
933
1070
1164
881
--1112
1257
--1392
1003
1143
1245
1857
--2346
Hc
657
667
121
119
164
121
164
137
202
159
202
159
-----
202
159
202
159
313
286
--159
227
---
313
286
-----
Hs
---
284
286
375
375
---
378
378
292
222
303
292
401
Jc
171
222
222
222
222
356
222
222
356
356
356
356
---
Js
---
305
305
356
356
---
356
356
432
432
432
432
NOTE 5
657, -4
667, -4
213
194
222
224
272
244
291
310
291
310
395
---
354
325
354
325
406
375
--375
435
432
780
419
451
451
657, -4
667, -4
-----
226
214
248
248
306
362
306
362
-----
370
378
370
378
446
446
--446
503
503
527
527
NOTE 6
2105
657
657MO
657-4MO
-------
-------
-------
-------
-------
-------
-------
-------
--219
219
-------
254
384
---
--219
219
-------
667
667MO
667-4MO
-------
-------
-------
-------
-------
-------
-------
-------
--219
219
--219
---
254
384
---
--219
219
-------
657, -4
667, -4
0.00
1.50
1.00
1.50
1.00
1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.50
1.50
--1.50
-----
1.50
1.50
-----
11.38
13.12
13.12
16.00
18.62
21.12
16.00
18.62
21.12
18.62
25.00
21.12
28.69
2.125
2.5
2.8125
2.8125
2.8125
2.8125
3.5625
3.5625
3.5625
3.5625
5(2)
657
657-4
657MO
17.31
--17.31
19.62
--19.62
21.56
--21.56
25.94
--25.94
25.81
--25.81
-------
28.44
--28.44
28.44
--28.44
33.06
39.12
38.44
-------
42.31
--46.56
36.94
42.88
41.62
NOTE 3
--NOTE 4
667
667-4
667MO
18.81
--18.81
22.56
--22.56
23.38
--23.38
30.25
--30.25
29.44
--29.44
-------
30.88
--30.88
30.88
--30.88
36.75
42.12
45.81
34.70
--43.76
49.50
--54.81
39.50
45.00
49.00
73.12
--92.38
657
667
4.75
4.69
6.44
4.75
6.44
5.38
7.94
6.25
7.94
6.25
-----
7.94
6.25
7.94
6.25
12.31
11.25
--6.25
8.94
---
12.31
11.25
-----
Hs
---
11.19
11.25
14.75
14.75
---
14.88
14.88
11.50
11.50
11.94
11.50
15.78
Jc
6.75
8.75
8.75
8.75
8.75
14.00
8.75
8.75
14.00
8.75
14.00
14.00
---
Js
---
12.00
12.00
14.00
14.00
---
14.00
14.00
17.00
17.00
17.00
17.00
NOTE 5
Inches
B
Hc
657, -4
667, -4
8.38
7.62
8.75
8.83
10.69
9.62
11.44
12.19
11.44
12.19
15.56
---
13.94
12.81
13.94
12.81
16.00
14.75
--14.75
17.12
17.00
18.88
16.50
17.75
17.75
657, -4
667, -4
-----
8.88
8.44
9.75
9.75
12.06
14.25
12.06
14.25
-----
14.56
14.88
14.56
14.88
17.56
17.56
--17.56
19.81
19.81
20.75
20.75
NOTE 6
82.88
657
657MO
657-4MO
-------
-------
-------
-------
-------
-------
-------
-------
--8.62
8.62
-------
10.00
15.12
---
--8.62
8.62
-------
667
667MO
667-4MO
-------
-------
-------
-------
-------
-------
-------
-------
--8.62
8.62
--8.62
---
10.00
15.12
---
--8.62
8.62
-------
1. MO = Manual operator.
2. Also available with 7 inch boss.
3. With group 1 springs, E=1959 mm (77.12 inch). With group 2 springs, E=1497 mm (58.94 inch).
4. With group 1 springs, E=2345 mm (92.31 inch). With group 2 springs, E=1883 mm (74.12 inch).
5. For 0-111,200 N (0-25,000 lb) load, Js=305 mm (12.00 inch); 111,200-160,100 N (25,000-36,000 lb) load, Js=406 mm (16.00 inch); 160,100-200,200 N (36,000-45,000 lb) load,
Js=508 mm (20.00 inch).
6. With group 1 springs, M=2103 mm (82.81 inch). With group 2 springs, M=1654 mm (65.12 inch).
12
Product Bulletin
61.1:657
October 2004
AU6713-D/DOC
TYPES 657, 667,
6574, AND 6674
SIZES 30 THROUGH 87
657 and 667 Actuators
AU6713-D/DOC
A0171-2/DOC
TYPES 657, 667,
6574, AND 6674
SIZES 30 THROUGH 87
40A8196/DOC
ALL TYPES
SIZES 70, 80, 87, AND
TYPE 667 SIZE 76
TYPES 657 AND 667
SIZE 100
Figure 10. Dimensions (also see table 8)
Ordering Information
Actuator and Positioner
When ordering, specify:
Be sure to specify: actuator type number; whether a
positioner is required; whether a top-mounted
handwheel is required; and whether an adjustable
up or down travel stop is required. Refer to the
Specifications section. Review the information under
each specification and in the referenced tables and
figures. Specify the desired choice wherever there is
a selection to be made.
Application
1. On-off or throttling service
2. Input signal range
3. Maximum supply pressure
4. Valve body type and size with which the actuator
will be used
Valve Body and Accessories
Refer to the separate valve body bulletin and
bulletins covering accessories for ordering
information.
5. Valve plug travel
6. Actuator thrust required with actuator stem both
fully retracted and fully extended
7. Stroking time requirements, if critical
8. Seismic requirements, if critical
9. Ambient temperature range
Note
Fisher does not assume responsibility
for the selection, use, or maintenance
of any product. Responsibility for
proper selection, use, and
maintenance of any Fisher product
remains solely with the purchaser and
end-user.
13
Product Bulletin
61.1:657
October 2004
657 and 667 Actuators
Specifications
Standard Operating Pressure Range(1)
Signal Connections
Sizes 30 - 60 and Type 667 Size 76: 0.25 in.
NPT female
Sizes 70 and 87: 0.5 in. NPT female
Size 80
Type 657: 0.75 in. NPT female with 0.25 in. NPT
female bushing
Type 667: 0.5 in. NPT female with 0.25 in. NPT
female bushing
Size 100: 1 in. NPT female with 0.25 in. NPT
female bushing
Type 657 and 667: J 0.2 to 1.0 bar (3 to 15 psig)
or J 0.4 to 2.0 bar (6 to 30 psig)
Type 657-4 and 667-4: 0.2 to 1.9 bar (3 to 27
psig)
Type 667 Size 76: J 0.4 to 2.0 bar (6 to 30 psig)
or J 0 to 3.1 bar (0 to 45 psig)
Maximum Travel
See table 1
Effective Diaphragm Area
See table 1
Output Indication
Stainless steel disk or pointer and graduated
scale
Construction Materials (refer to figure 2)
Diaphragm Casing
Sizes 30 - 87: Steel
Size 80: J Cast iron or J steel
Size 100: J Cast aluminum
Diaphragm
Sizes 30 - 87: J Nitrile on nylon, J Silicone on
polyester
Size 100: Nitrile on polyester
Diaphragm Plate
Type 657 Sizes 30- 60, 100: J Cast aluminum
Type 657 Sizes 70 - 87: J Cast iron or J steel
Type 667 Sizes 30 - 60, 100: J Cast aluminum or
J steel
Type 667 Sizes 70 - 87: J Cast iron or J steel
Actuator Spring: Steel
Spring Adjustor: Steel
Spring Seat: J Steel or J cast iron
Actuator Stem: Steel
Travel Indicator: Stainless steel
O-Rings: Nitrile
Seal Bushing: Brass
Stem Connector: Zinc-plated steel
Yoke
Sizes 30 - 80: J Cast iron or J steel
Size 100: Steel
Stroking Speed
Dependent on actuator size, travel, spring rate,
initial spring compression, and supply pressure. If
stroking speed is critical, consult your Fisher
sales office
Maximum Allowable Thrust(2)
See table 1
Operating Temperature Range(1)
Standard Construction (Nitrile Elastomers):
40 to 82_C (40 to 180_F)
Optional Construction (Silicone Diaphragm):
40 to 149C (40 to 300F)
Maximum Valve Packing Box Temperature:
427_C (800_F) with cast iron yoke
Volumetric Displacement
See table 2
- continued -
14
Product Bulletin
61.1:657
October 2004
657 and 667 Actuators
Specifications (continued)
Construction Materials for Cold Service
[to 50_C (58_F)] Type 657 and 667all sizes
Yoke: Steel (Grade LCC)
Diaphragm: Silicone
O-Rings:(3) Ethylene Propylene
Bolting: Stainless Steel B8M Cl 2
Stem Connector: Stainless Steel
Lubricant: Silicone (Molykote 33)
Stem and Yoke Boss Diameters
See table 1
Approximate Weight
See table 3
Options
J Oversize signal connections, J Plastic yoke
covers, J Watertight yoke (sealed construction
for certain applications where valve stem and
packing must be protected)
1. The pressure and temperature limits in this bulletin and in any applicable standard or code limitation should not be exceeded.
2. Do not exceed the thrust limits in this bulletin.
3. Includes diaphragm casing seals, casing-mounted handjack on Type 657, seal bushing on Type 667.
15
Product Bulletin
61.1:657
October 2004
657 and 667 Actuators
easy-e and Fisher are marks owned by Fisher Controls International LLC, a member of the Emerson Process Management business division of
Emerson Electric Co. The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their
respective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are
not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability.
We reserve the right to modify or improve the designs or specifications of such products at any time without notice.
Fisher does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and
maintenance of any Fisher product remains solely with the purchaser and end-user.
Emerson Process Management
Fisher
Marshalltown, Iowa 50158 USA
Cernay 68700 France
Sao Paulo 05424 Brazil
Singapore 128461
www.Fisher.com
16
EFisher
Controls International LLC 1990, 2004; All Rights Reserved
Printed in USA
