Instruction Manual
D102087X012
585C Actuator
October 2013
4
Table 2. Fisher 585C Piston Cylinder Clearance Volumes
PISTON AT TOP OF CYLINDER (SPRINGS BELOW PISTON FOR SIZE 25 AND 50)
Actuator
Size
Piston Area
Maximum Actuator Travel
Upper Clearance Volume
Volume Below Piston
cm
2
Inches
2
cm
Inches
cm
3
Inches
3
cm
3
Inches
3
25
168
26
2.9
1.125
104
6.3
1750
107
50
303
47
5.1
2
330
20
5200
320
60
358
55.5
5.1
2
310
19
2700
163
10
4
310
19
4400
270
20
8
310
19
8200
500
68
571
88.5
5.1
2
1230
75
7500
460
10.2
4
1230
75
7500
460
20.3
8
1230
75
13300
810
80
571
88.5
10.2
4
1230
75
7500
460
20.3
8
1230
75
13300
810
100
842
130.5
10.2
4
1700
104
10700
650
20.3
8
1700
104
19200
1170
130
1430
221.5
10.2
4
4600
280
18500
1130
20.3
8
4600
280
33000
2000
PISTON AT BOTTOM OF CYLINDER (SPRINGS ABOVE PISTON FOR SIZE 25 AND 50)
Actuator
Size
Piston Area
Maximum Actuator Travel
Lower Clearance Volume
Volume Above Piston
cm
2
Inches
2
cm
Inches
cm
3
Inches
3
cm
3
Inches
3
25
168
26
2.9
1.125
77
4.7
1790
109
50
303
47
5.1
2
350
22
5200
320
Table 3. Yoke Boss and Valve Stem Diameters
ACTUATOR SIZE
YOKE BOSS DIAMETER
VALVE STEM DIAMETER
mm
Inches
mm
Inches
25
54
71
2-1/8
2-13/16
9.5
12.7
3/8
1/2
50
71
90
2-13/16
3-9/16
12.7
19.1
1/2
3/4
60
90
3-9/16
19.1
3/4
68
90
3-9/16
19.1
3/4
80
127
5, 5H
25.4
31.8
1
1-1/4
100
127
5, 5H
25.4
31.8
1
1-1/4
130
127
5, 5H
25.4
31.8
1
1-1/4
1. Heavy actuator to bonnet bolting.