Filter
Top Products
655 and 655R Actuators
Instruction Manual
Form 1292
July 2007
5
Table 3. Effective Diaphragm Area
(1)
ACTUA-
TRAVEL DOWN FROM UPPER CASING STOP, mm (IN.)
ACTUA
-
TOR
0 3 (0.125) 5 (0.1875) 6 (0.25) 10 (0.375) 11 (0.4375) 13 (0.5) 14 (0.5625) 19 (0.75) 22 (0.875)
TOR
SIZE
Cm
2
In.
2
Cm
2
In.
2
Cm
2
In.
2
Cm
2
In.
2
Cm
2
In.
2
Cm
2
In.
2
Cm
2
In.
2
Cm
2
In.
2
Cm
2
In.
2
Cm
2
In.
2
3A, 4A 66 10.2 62 9.6 61 9.5 61 9.4 59 9.2 59 9.1 57 8.9 56 8.7 - - - - - - - - - - - -
3B, 4B 152 23.5 139 21.6 136 21.1 134 20.8 132 20.5 131 20.3 130 20.1 128 19.8 117 18.1 103 16.0
32, 42 258 40.0 235 36.4 227 35.2 221 34.2 210 32.6 205 31.8 200 31.0 195 30.3 182 28.2 170 26.4
33, 43 406 63.0 374 58.0 366 56.8 358 55.5 345 53.5 340 52.7 335 52.0 330 51.2 318 49.3 307 47.6
34, 44 600 93.0 547 84.8 534 82.8 523 81.0 508 78.8 502 77.8 497 77.0 490 76.0 474 73.5 465 72.0
35, 45 865 134.0 834 129.2 821 127.2 809 125.4 788 122.2 777 120.5 768 119.0 759 117.6 736 114.1 723 112.0
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.
Figure 3. Actuator/Valve Components
DV3742-B
DH4667-B
31A0223-B
B0816-1 / IL
PUSHĆDOWNĆTOĆCLOSE VALVE
PUSHĆDOWNĆTOĆOPEN VALVE
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