November 2000 Bulletin 61.

1:657

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 Versatility—Five 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.
W1916–3/IL
W2174–2/IL

TYPE 657 TYPE 667

D Excellent Linearity Between Loading Pressure ACTUATOR ACTUATOR
and Travel—Molded diaphragm travels in deep
diaphragm casing, minimizing area change throughout
Figure 1. Types 657 and 667 Actuators Mounted on
travel. easy-eR Valves

D High Degree of Dynamic Stability and

Frequency Response—Shallow casing on pressure
D Cold Service Applications—Enhanced product
side means reduced volume on that side, thereby
specifications for all sizes of Type 657 and 667
minimizing response time.
diaphragm actuators allow performance to –50_C
(–58_F). Use of a positioner is recommended to
D High Thrust Capability—Molded diaphragm ensure responsiveness in applications operating below
allows maximum thrust for given diaphragm size. –40_C (–40_F).

D Longer Service Life—Rugged thick-walled cast D Positive Connections—Split block stem

iron and steel construction provides stability, corrosion connection provides a solid transfer of motion while
protection, and protection from deformation should allowing easy mounting, no linkages to create lost
over-pressurization occur. motion and inaccurate valve positioning. D100087X012
Bulletin 61.1:657
Contents Type 657-4—A Type 657 actuator in sizes 70 and 87,
designed with 102 mm (4-inch) travel.
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Reverse Action
Available Configurations . . . . . . . . . . . . . . . . 2
All Type 667 actuators are reverse acting. Applying air
Direct Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
pressure to the lower diaphragm casing forces the
Reverse Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
actuator stem upward against the opposing spring
force. When this loading pressure is reduced, the
Accessories .............................. 2 spring moves the actuator stem downward. Should the
Handwheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 loading pressure fail, the spring forces the stem to the
Adjustable Travel Stops . . . . . . . . . . . . . . . . . . . . . . 6 extreme downward position. These actuators provide
Hydraulic Snubber . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 fail-closed action for push-down-to-close valves and
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 fail-open action for push-down-to-open valves.

Ordering Information . . . . . . . . . . . . . . . . . . . 13 Type 667—A reverse-acting actuator used on sliding

stem valves. Available in sizes 30 through 100 and 76.
Tables See figures 1, 2, 3, 8, and 9.
Additional Specifications . . . . . . . . . . . . . . . . . . . . . . 4
Volumetric Casing Displacement . . . . . . . . . . . . . . . 5 Type 667-4—A Type 667 actuator in sizes 70 and 87,
Approximate Actuator Weights designed with 102 mm (4-inch) travel.
(without handwheel) . . . . . . . . . . . . . . . . . . . . . . . 5
Thrust Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Handwheel Specifications . . . . . . . . . . . . . . . . . . . . . 9
Adjustable Travel Stop Styles . . . . . . . . . . . . . . . 10 Accessories

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Handwheels
Handwheels for diaphragm actuators are often used
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 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
Available Configurations be equipped with a side-mounted handwheel actuator.

Top-Mounted Handwheels—Typical Type 657 and

Direct Action
667 actuators with handwheels mounted on the
All Type 657 actuators are direct acting. Applying air diaphragm case are shown in figure 3 (not available on
pressure to the upper diaphragm casing forces the a Type 667 actuator, size 80). On the Type 657
actuator stem downward. When this pressure is actuator, the handwheel can be set to limit the travel in
reduced, the opposing spring force moves the actuator the upward direction; on the Type 667 actuator, travel
stem upward. Should the loading pressure fail, the in the downward direction can be restricted. A Type
spring forces the stem to the extreme upward position. P-2 travel stop (figure 5) is available for a Type 667
This provides fail-open action for push-down-to-close actuator, sizes 45-60 to limit travel in either the upward
valves and fail-closed action for push-down-to-open or downward directions. An actuator with a Type P-2
valves. travel stop is limited to a maximum travel of 19 mm
(3/4 inch). The handwheel on the size 100, is similar in
Type 657—A direct-acting actuator used on sliding function to those on the smaller sizes, but it uses a
stem valves. Available in sizes 30 through 100. See gear drive similar to the drive employed on the integral
figure 1, 2, 3, 6, and 7. side-mounted handwheels (see figure 3).

2
 Bulletin 61.1:657

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 30-87 TYPE 657 SIZES 30-87

W0366–1/IL

TYPE 657 SIZE 100

Figure 2. Typical Actuators

3
Bulletin 61.1:657
Table 1. Additional Specifications for Type 657 and 667 Series Actuators
EFFECTIVE YOKE MAXIMUM MAXIMUM MAXIMUM
STEM MAXIMUM
DIAPHRAGM BOSS ALLOWABLE CASING PRESSURE FOR DIAPHRAGM
ACTUATOR DIA TRAVEL
AREA DIAMETER THRUST(1) ACTUATOR SIZING CASING PRESSURE
SIZE 657 667 657 667
cm2 mm N
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
76
70(2) 1419 90 19 1
19.1 39 142
39,142 38
3.8 34
3.4 45
4.5 41
4.1
102(3)
76(667) 1006 90 19.1 51 30,246 --- 3.4 --- 4.1
25.4 63,392 3.4 3.4 4.1 4.1
80 1761 127 76
31.8 88,075(4) 4.9(4) 4.9(4) 5.5(4) 5.5(4)
76
87(2) 1419 127 25 4
25.4 39 142
39,142 38
3.8 34
3.4 45
4.5 41
4.1
102(3)
127H(5) 31.8
100 2902 102 200 160
200,160 69
6.9 69
6.9 79
7.9 79
7.9
178 50.8
Inch2 Inch Lb Psig
30 46 2-1/8 3/8 3/4 2300 125 55 140 110
34 69 2-1/8 3/8 1-1/8 2300 65 70 75 90
40 69 2-13/16 1/2 1-1/2 2700 65 70 75 90
45 105 2-13/16 1/2 2 5650 50 65 60 75
46 156 2-13/16 1/2 2 7550 40 55 50 65
50 105 3-9/16 3/4 2 5650 50 65 60 75
60 156 3-9/16 3/4 2 6800 40 55 50 65
3
70(2) 220 3 9/16
3-9/16 3/4 8800 55 50 65 60
4(3)
76(667) 156 3-9/16 3/4 2 6800 --- 50 --- 60
1 14,150 50 50 60 60
80 273 5 3
1-1/4 19,800(4) 70(4) 70(4) 80(4) 80(4)
3
87(2) 220 5 1 8800 55 50 65 60
4(3)
5H(5) 1-1/4
100 450 4 45 000
45,000 100 100 115 115
7 2
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.

4
 Bulletin 61.1:657
Table 2. Volumetric Casing Displacement for the Type 657 and 667 Series Actuators
CLEARANCE TRAVEL, mm
ACTUATOR VOLUME(1) 11 16 19 29 38 51 76 102
SIZE
cm3 Casing Volume(2), cm3
30 540 918 1080 1180 --- --- --- --- ---
34 & 40 934 1470 1700 1850 2330 2790 --- --- ---
45 & 50 1560 --- 2790 3000 3720 4420 5410 --- ---
46, 60, & 76 2180 --- 3880 4210 5280 6340 7740 --- ---
70 & 87 3490 5240 5950 6420 7830 9240 11,110 14,880 18,570
80 4820 --- --- --- 10,490 12,450 14,860 19,340 ---
657 10,880 --- --- 16,400 19,170 21,940 25,630 33,000 40,380
100
667 12,780 --- --- 18,320 21,070 23,840 27,530 34,900 42,280
TRAVEL, INCH
Inch3 7/16 5/8 3/4 1-1/8 1-1/2 2 3 4
Casing Volume(2), Inch3
30 33 56 66 72 --- --- --- --- ---
34 & 40 57 90 104 113 142 170 --- --- ---
45 & 50 95 --- 170 183 227 270 330 --- ---
46, 60, & 76 133 --- 237 257 322 387 472 --- ---
70 & 87 213 320 363 392 478 564 678 980 1133
80 294 --- --- --- 640 760 907 1180 ---
657 664 --- --- 1002 1170 1339 1564 2014 2464
100
667 780 --- --- 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
657 667 657 667
SIZE
Kg Lb
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

5
Bulletin 61.1:657
Table 4. Thrust Capabilities (1) by Input Signal Range Clockwise rotation of the handwheel on the Type 657
PRESSURE RANGE THRUST actuator moves the actuator stem downward,
TRAVEL ACTUATOR TO ACTUATOR CAPABILITIES compressing the spring. Spring action returns the stem
SIZE DIAPHRAGM 657 667 as the handwheel is turned counterclockwise. With the
mm Bar N Type 667 actuator, counterclockwise rotation moves
0.2-1 2250 1840 the stem upward, and spring action returns the stem
30 on clockwise rotation.
0.4-2 3890 3270
19
0.2-1 3380 3380
34 Side-Mounted Handwheels—Figure 4 shows the
0.4-2 5830 5530
0.2-1 3380 2760 side-mounted handwheels (designated by the letters
40
0.4-2 5530 3680
MO) applicable to sizes 34 through 87, Type 657 and
0.2-1 4670 4670
667 actuators. Size 30 actuators do not have a
29 45 side-mounted handwheel available.
0.4-2 8410 8870
0.2-1 6940 6250
46 All side-mounted handwheels can be used to stroke the
0.4-2 13,190 11,800
valve in either direction at any point in the actuator stem
0.2-1 5140 3740
50 travel. Unlike the top-mounted handwheel, the
0.4-2 8410 7010 side-mounted handwheel can be positioned to limit
38
0.2-1 6940 4860 travel in either direction, but not both at the same time.
60
0.4-2 13,190 8330 With the handwheel in the neutral position, automatic
70
0.2-1 7830 7830 operation is possible throughout full valve travel. In any
0.4-2 18,590 13,700 other position, valve travel will be restricted. The
0.2-1 10,110 11,250 handwheel is furnished with a spring-loaded ball detent
51 80
0.4-2 18,950 19,680 which prevents vibration from changing the setting.
0.2-1 6850 7830
87
0.4-2 18,590 13,700
0.2-1 16,010 8010 Adjustable Travel Stops
76
0.4-2 32,030 36,030 Top-mounted adjustable travel stops are available for
100
0.2-1 12,010 --- 657 and 667 Series actuators. They are used to limit
102
0.4-2 22,019 28,024 travel in the up, down, or up and down directions.
Inch Psig Lb Figure 5 illustrates the different constructions. Table 7
3-15 506 414 locates the different style constructions with actuator
30
6-30 874 736 type and use.
3/4
3-15 759 759
34
6-30 1311 1242
3-15 759 621 Hydraulic Snubber
40
6-30 1242 828
Diaphragm actuators can be supplied with a hydraulic
3-15 1050 1050
1 1/8
1-1/8 45 snubber when operating conditions cause vertical
6-30 1890 1995 instability of the valve plug. The snubber absorbs valve
3-15 1560 1404 forces caused by instability to provide smoother operation.
46
6-30 2964 2652

50
3-15 1155 840 The Type 314 hydraulic snubber is used with the Type
6-30 1890 1575 657 actuator, sizes 45 through 87, and the Type 315
1 1/2
1-1/2
3-15 1560 1092 snubber with the Type 667 actuator, sizes 45 through
60
6-30 2964 1872 87. As the piston moves in the oil-filled cylinder, oil is
3-15 1760 1760 forced from one side of the piston to the other through
70 two check valves.
6-30 4180 3080
3-15 2272 2528
2 80
6-30 4260 4424
3-15 1540 1760 Other
87
6-30 4180 3080 Accessories such as transducers, positioners, position
3-15 3600 1800 transmitters, air relays, volume boosters, switching
3
6-30 7200 8100 valves, lockup valves, limit switches, and solenoid
100
3-15 2700 --- valves are also available for actuator mounting. They
4
6-30 4950 6300 are described in separate publications. Contact your
1. for Size 76 Type 667 actuators, contact your Fisher Controls sales office. Fisher Controls sales office for details.

6
 Bulletin 61.1:657

W0368–2/IL W0369–2/IL

TYPE 657 ACTUATOR TYPE 667 ACTUATOR

(EXCEPT SIZE 100) (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

7
Bulletin 61.1:657

SECTION A–A

W0371–1/IL W0372–1/IL

SIZES 34 THROUGH 60 SIZES 70, 76, 80, AND 87

Figure 4. Typical of Side-Mounted Handwheels for Type 657 and 667 Series Actuators

40A38A1211–E
40A8764–E

Figure 5. Adjustable Travel Stops

8
 Bulletin 61.1:657
Table 5. Type 657 Handwheel Specifications
TOP-MOUNTED HANDWHEEL SIDE-MOUNTED HANDWHEEL
Maximum
TYPE 657 Maximum
Handwheel Handwheel Handwheel
ACTUATOR Turns Per Rim Force(1) Handwheel Turns Per Rim Force(1)
Diameter Diameter Output
SIZE mm Travel Output Force mm Travel Force(3)
mm N N mm N N
30 171 0.3 190 6670 --- --- --- ---
34 & 40 222 0.3 210 10,010 304 0.2 230 10,010
45 & 50 222 0.3 420 15,080 355 0.3 360 15,080
46 & 60 222 0.3 490 22,690 355 0.3 540 22,690
70 & 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 6 250 111,000
100(2) 406 6 270 160,000 ---
508 6 270 200,000
Turns Per Turns Per
Inch Lb Lb Inch Lb Lb
Inch Travel Inch Travel
30 6.75 8 42 1500 --- --- --- ---
34 & 40 8.75 8 48 2250 12 5.14 52 2250
45 & 50 8.75 8 95 3390 14 6.65 81 3390
46 & 60 8.75 8 110 5100 14 6.65 122 5100
70 & 87 14 8 132 6600 17 20 36 6600
80 14 8 173 8490 17 10 53 8490
12 144 56 25,000
100(2) 16 144 60 36,000 ---
20 144 60 45,000
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.

9
Bulletin 61.1:657
Table 6. Type 667 Handwheel Specifications
TOP-MOUNTED HANDWHEEL SIDE-MOUNTED HANDWHEEL
Maximum
TYPE 667 Turns Maximum
Handwheel Rim TYPE 667 Handwheel Handwheel
ACTUATOR Per Handwheel Turns Per Rim Force(1)
Diameter Force(1) ACTUATOR Diameter Output
SIZE mm Output Force mm Travel
SIZE Force(3)
Travel
mm N N mm N N
30 171 0.3 200 6670 30 --- --- --- ---
34 & 40 222 0.3 230 10,010 34 & 40 304 0.2 230 10,010
222 0.2 460 17,790
45 & 50 45 & 50 355 03
0.3 360 15 080
15,080
355 0.2 430 26,690
222 0.2 460 17,790
46 60
46, 60, & 76 46 & 60 355 03
0.3 540 22 690
22,690
355 0.2 430 26,690
355 0.2 520 26,690
70 & 87 70 76
70, 76, & 87 432 08
0.8 160 29 360
29,360
762 mm Bar 0.2 410 44,480
304 6 250 111,000 80 432 0.4 240 37,770
100(2) 406 6 270 160,000
---
508 6 270 200,000
Turns
TYPE 667 TYPE 667
Per Turns Per
ACTUATOR Inch Lb Lb ACTUATOR Inch Lb Lb
Inch Inch Travel
SIZE SIZE
Travel
30 6.75 8 45 1500 30 --- --- --- ---
34 & 40 8.75 8 51 2250 34 & 40 12 5.14 52 2250
8.75 6 103 4000
45 & 50 45 & 50 14 6 65
6.65 81 3390
14 6 97 6000
8.75 6 103 4000
46 60
46, 60, & 76 46 & 60 14 6 65
6.65 122 5100
14 6 97 6000
14 6 118 6000
70 & 87 70 76
70, 76, & 87 17 20 36 6600
30 Inch Bar 6 92 10000
12 144 56 25,000 80 17 10 53 8490
100(2) 16 144 60 36,000
---
20 144 60 45,000
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 (see figure 5)

Actuator Size 30 34 40 45 46 50 60 & 667 Size 76 70 87 80 100
Type 657 Up Stop 1 1 1 1 1 1 1 1 1 NOTE 1 NOTE 1
Type 657 Down Stop 2 2 2 2 2 2 2 2 2 --- ---
12, 13(2), 12, 13(2), 12, 13(2), 12, 13(2), 12, 13(2), 12, 13(2), 12, 13(2),
Type 667 Up Stop 12 12 13(2) ---
14 14 14 14 14 14 14
Type 667 Down Stop 10 10 10 10 10 10 10 10 10 --- NOTE 1
Type 667 Up and
--- 11 11 11(3), P2(4) 11(3), P2(4) 11(3), P2(4) 11(3), P2(4) --- --- --- ---
Down Stop
1. Top-mounted handwheel, see figure 3.
2. Adjustable handwheel up stop.
3. 38 mm (1-1/2 inch) maximum travel.
4. Adjustable handwheel up and down stop, 19 mm (3/4 inch) maximum travel.

10
 Bulletin 61.1:657

W4917–1/IL W4930/IL

Figure 6. Type 646 Electro-Pneumatic Transducer Figure 7. Type 3582i Valve Positioner on Type 657 Actuator
on Type 657 Actuator

W4273–1/IL W3792–1/IL

Figure 8. Type 4200 Position Transmitter on Figure 9. Type 304 Electrical Valve Stem Position Switch
Type 667 Actuator on Type 667 Actuator

11
Bulletin 61.1:657

ACTUATOR SIZE
DIMENSION
30 34 40 45 46 47 50 60 70 76 80 87 100
REFERENCE
mm
657, -4 0 25 25 38 38 38 38 38 38 --- --- 38 ---
B
667, -4 38 38 38 38 38 38 38 38 38 38 --- 38 ---
C 289 333 333 406 473 536 406 473 536 473 635 536 729
D 54 64 71 71 71 71 90 90 90 90 127 127 127(2)
657 440 498 548 659 656 --- 722 722 840 --- 1075 938 NOTE 3
657-4 --- --- --- --- --- --- --- --- 994 --- --- 1089 ---
657MO 440 498 548 659 656 --- 722 722 976 --- 1183 1057 NOTE 4
E
667 478 573 594 768 748 --- 784 784 933 881 1257 1003 1857
667-4 --- --- --- --- --- --- --- --- 1070 --- --- 1143 ---
667MO 478 573 594 768 748 --- 784 784 1164 1112 1392 1245 2346
657 121 164 164 202 202 --- 202 202 313 --- 227 313 ---
Hc
667 119 121 137 159 159 --- 159 159 286 159 --- 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, -4 213 222 272 291 291 395 354 354 406 --- 435 780 451
K
667, -4 194 224 244 310 310 --- 325 325 375 375 432 419 451
657, -4 --- 226 248 306 306 --- 370 370 446 --- 503 527 NOTE 6
M
667, -4 --- 214 248 362 362 --- 378 378 446 446 503 527 2105
657 --- --- --- --- --- --- --- --- --- --- 254 --- ---
657MO --- --- --- --- --- --- --- --- 219 --- 384 219 ---
657-4MO --- --- --- --- --- --- --- --- 219 --- --- 219 ---
N
667 --- --- --- --- --- --- --- --- --- --- 254 --- ---
667MO --- --- --- --- --- --- --- --- 219 219 384 219 ---
667-4MO --- --- --- --- --- --- --- --- 219 --- --- 219 ---
Inches
657, -4 0.00 1.00 1.00 1.50 1.50 1.50 1.50 1.50 1.50 --- --- 1.50 ---
B
667, -4 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 --- 1.50 ---
C 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
D 2-1/8 2-1/2 2-13/16 2-13/16 2-13/16 2-13/16 3-9/16 3-9/16 3-9/16 3-9/16 5 5 5(2)
657 17.31 19.62 21.56 25.94 25.81 --- 28.44 28.44 33.06 --- 42.31 36.94 NOTE 3
657-4 --- --- --- --- --- --- --- --- 39.12 --- --- 42.88 ---
657MO 17.31 19.62 21.56 25.94 25.81 --- 28.44 28.44 38.44 --- 46.56 41.62 NOTE 4
E
667 18.81 22.56 23.38 30.25 29.44 --- 30.88 30.88 36.75 34.70 49.50 39.50 73.12
667-4 --- --- --- --- --- --- --- --- 42.12 --- --- 45.00 ---
667MO 18.81 22.56 23.38 30.25 29.44 --- 30.88 30.88 45.81 43.76 54.81 49.00 92.38
657 4.75 6.44 6.44 7.94 7.94 --- 7.94 7.94 12.31 --- 8.94 12.31 ---
Hc
667 4.69 4.75 5.38 6.25 6.25 --- 6.25 6.25 11.25 6.25 --- 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
657, -4 8.38 8.75 10.69 11.44 11.44 15.56 13.94 13.94 16.00 --- 17.12 18.88 17.75
K
667, -4 7.62 8.83 9.62 12.19 12.19 --- 12.81 12.81 14.75 14.75 17.00 16.50 17.75
657, -4 --- 8.88 9.75 12.06 12.06 --- 14.56 14.56 17.56 --- 19.81 20.75 NOTE 6
M
667, -4 --- 8.44 9.75 14.25 14.25 --- 14.88 14.88 17.56 17.56 19.81 20.75 82.88
657 --- --- --- --- --- --- --- --- --- --- 10.00 --- ---
657MO --- --- --- --- --- --- --- --- 8.62 --- 15.12 8.62 ---
657-4MO --- --- --- --- --- --- --- --- 8.62 --- --- 8.62 ---
N
667 --- --- --- --- --- --- --- --- --- --- 10.00 --- ---
667MO --- --- --- --- --- --- --- --- 8.62 8.62 15.12 8.62 ---
667-4MO --- --- --- --- --- --- --- --- 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).

Figure 10. Dimensions

12
 Bulletin 61.1:657

AU6713–D/DOC AU6713–D/DOC
A0171–2/DOC
40A8196/DOC

TYPES 657, 667, TYPES 657, 667, ALL TYPES

657Ć4, AND 667Ć4 657Ć4, AND 667Ć4 SIZES 70, 80, 87, AND TYPES 657 AND 667
SIZES 30 THROUGH 87 SIZES 30 THROUGH 87 TYPE 667 SIZE 76 SIZE 100

Figure 10. Dimensions (continued)

Ordering Information 7. Stroking time requirements, if critical

When ordering, specify: 8. Seismic requirements, if critical

Application 9. Ambient temperature range

1. On-off or throttling service Actuator and Positioner
Be sure to specify: actuator type number; whether a
2. Input signal range
positioner is required; whether a top-mounted
handwheel is required; and whether an adjustable up
3. Maximum supply pressure or down travel stop is required. Refer to the
Specifications section on page 2. Review the
4. Valve body type and size with which the actuator information under each specification and in the
will be used referenced tables and figures. Specify the desired
choice wherever there is a selection to be made.
5. Valve plug travel
Valve Body and Accessories
6. Actuator thrust required with actuator stem both fully Refer to the separate valve body bulletin and bulletins
retracted and fully extended covering accessories for ordering information.

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Bulletin 61.1:657
Specifications
Standard Operating Pressure Range Effective Diaphragm Area
Type 657 and 667: J 0.2 to 1.0 bar (3 to 15 psig) See table 1
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) Construction Materials (refer to figure 2)
Type 667 Size 76: J 0.4 to 2.0 bar (6 to 30 psig) or Diaphragm Casing
J 0 to 3.1 bar (0 to 45 psig) Sizes 30 - 87: Steel
Size 80: J Cast iron or J steel
Maximum Travel Size 100: J Cast aluminum
Diaphragm
See table 1 Sizes 30 - 87: J Nitrile on nylon, J Silicone on
polyester
Output Indication Size 100: Nitrile on polyester
Diaphragm Plate
Stainless steel disk or pointer and graduated scale 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
Stroking Speed
J steel
Dependent on actuator size, travel, spring rate, Type 667 Sizes 70 - 87: J Cast iron or J steel
initial spring compression, and supply pressure. If Actuator Spring: Steel
stroking speed is critical, consult your Fisher Spring Adjustor: Steel
Controls sales office Spring Seat: J Steel or J cast iron
Actuator Stem: Steel
Travel Indicator: Stainless steel
Maximum Allowable Thrust O-Rings: Nitrile
See table 1 Seal Bushing: Brass
Stem Connector: Zinc-plated steel
Yoke
Operating Temperature Range Sizes 30 - 80: J Cast iron or J steel
With Standard Nitrile Elastomers: –40 to 82_C Size 100: Steel
(–40 to 180_F)
With Silicone Elastomers: –54 to 149_C (–65 to Construction Materials for Cold Service
300_F) [to –50_C (–58_F)] Type 657 and 667—all sizes
Maximum Valve Packing Box Temperature: Yoke: Steel (Grade LCB)
427_C (800_F) with cast iron yoke Diaphragm: Silicone
O-Rings(1): Ethylene Propylene
Volumetric Displacement Bolting: Stainless Steel B8M Cl 2
Stem Connector: Stainless Steel
See table 2 Lubricant: Silicone (Molykote 33)

Stem and Yoke Boss Diameters

Signal Connections
See table 1
Sizes 30 - 60 and Type 667 Size 76: 1/4 in. NPT
female Approximate Weight
Sizes 70 and 87: 1/2 in. NPT female
Size 80 See table 3
Type 657: 3/4 in. NPT female with 1/4 in. NPT
female bushing Options
Type 667: 1/2 in. NPT female with 1/4 in. NPT J Oversize signal connections, J Plastic yoke
female bushing covers, J Watertight yoke (sealed construction for
Size 100: 1 in. NPT female with 1/4 in. NPT female certain applications where valve stem and packing
bushing must be protected)
1. Includes diaphragm casing seals, casing-mounted handjack on Type 657, seal bushing on Type 667.

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Bulletin 61.1:657

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Bulletin 61.1:657

easy-e, Fisher and Fisher-Rosemount are marks owned by Fisher Controls International, Inc. or Fisher-Rosemount Systems, Inc.
All other marks are the property of their respective owners.
EFisher Controls International, Inc. 1990, 2000; All Rights Reserved

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.

For information, contact Fisher:

Marshalltown, Iowa 50158 USA
Cernay 68700 France
Sao Paulo 05424 Brazil
Singapore 128461

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Printed in U.S.A.