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Instruction Manual
Form 1292
July 2007
ACTUA-
ACTUA-
0
3 (0.125)
TOR
TOR
SIZE
2
2
Cm
In.
Cm
3A, 4A
66
10.2
62
3B, 4B
152
23.5
139
32, 42
258
40.0
235
33, 43
406
63.0
374
34, 44
600
93.0
547
35, 45
865 134.0
834 129.2
36, 46
1230 190.0 1170 181.5 1150 179.0 1140 177.0 1120 173.5 1110 172.3 1100 171.0 1100 169.8 1070 166.5 1050 163.5
1. For the spring rates of a particular spring, see key 6 in the Parts List section.
DV3742-B
DH4667-B
31A0223-B
B0816-1 / IL
Table 3. Effective Diaphragm Area
TRAVEL DOWN FROM UPPER CASING STOP, mm (IN.)
5 (0.1875)
6 (0.25)
2
2
2
2
2
In.
Cm
In.
Cm
9.6
61
9.5
61
21.6
136
21.1
134
36.4
227
35.2
221
58.0
366
56.8
358
84.8
534
82.8
523
821 127.2
809 125.4
Figure 3. Actuator/Valve Components
655 and 655R Actuators
(1)
10 (0.375)
11 (0.4375)
2
2
2
2
2
In.
Cm
In.
Cm
In.
9.4
59
9.2
59
9.1
20.8
132
20.5
131
20.3
34.2
210
32.6
205
31.8
55.5
345
53.5
340
52.7
81.0
508
78.8
502
77.8
788 122.2
777 120.5
DIAPHRAGM PLATE
DOWN TRAVEL STOP
ACTUATOR STEM
ADJUSTING SCREW
TRAVEL INDICATOR
STEM HEX NUTS
VALVE STEM
YOKE LOCKNUT
SEAT RING
VALVE PLUG
VALVE PLUG
SEAT RING
13 (0.5)
14 (0.5625)
19 (0.75)
2
2
2
2
2
Cm
In.
Cm
In.
Cm
57
8.9
56
8.7
- - -
130
20.1
128
19.8
117
200
31.0
195
30.3
182
335
52.0
330
51.2
318
497
77.0
490
76.0
474
768 119.0
759 117.6
736 114.1
22 (0.875)
2
2
2
In.
Cm
In.
- - -
- - -
- - -
18.1
103
16.0
28.2
170
26.4
49.3
307
47.6
73.5
465
72.0
723 112.0
5
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