IMO 7/18
8
IMO-213 EN
3. Insert the four hex head cap screws (6) and lockwashers
(7) into the tapped holes. Tighten to values in Table 5.
5.5
Actuator versus Valve Position
IMPORTANT: The actuator and valve position must agree
before further assembly.
Since the valve has already been set in the closed position
(Step 1 under Valve Preparation), make sure that the actuator
is also in the closed position. EXCEPTION: if mounting a
spring-return actuator for “spring-to-open” operation; cycle
the valve to the open position and proceed with the actuator
AND valve in the open position.
5.6
Coupling to Actuator
Key Drive Actuators (Figure A): Install the key (4) into the key
slot of the coupling (1). The key should be filed to closely fit
into coupling and actuator keyway. If the fit is loose, apply
Loctite® Keyfit or equivalent.
Male/Female Square Drive Actuators (Figure C): No coupling
prep required.
5.7
Bracket Attachment to Actuator
1. Place the actuator onto the valve and bracket assembly
aligning the holes in the bracket with the holes in the
actuator, and aligning the actuator drive with the
coupling. Install the four hex head cap screws (8) and
four lockwashers (9) through the bracket and into the
actuator. Apply slightly more than finger-tightness to
these fasteners, but DO NOT TIGHTEN.
2. Cycle the actuator a couple of times, allowing the
assembly to position itself for proper actuator-drive to
valve-drive alignment. Tighten the four hex head cap
screws (8) securing the bracket to the actuator using the
values in Table 5 or 6 as applicable.
TABLE 5
Bolt Size
Torque to Cast/Ductile Body Actuators
No Lubrication
ft•lbs
in•lbs
N•m
1/4
8
96
11
5/16
16
192
22
3/8
27
324
37
7/16
45
540
61
1/2
67
804
91
9/16
100
1200
136
5/8
135
1620
183
3/4
225
2700
305
7/8
335
4020
454
1
520
6240
705
1-1/8
700
8400
949
1-1/4
990
11880
1342
M6
7
84
9
M8
14
168
19
M10
28
336
38
M12
48
576
65
M16
115
1380
156
M20
225
2700
305
M30
783
9396
1062
M36
1347
16164
1826
TABLE 6
Bolt Size
Torque to Aluminum Body Actuators
No Lubrication
ft•lbs
in•lbs
N•m
1/4
6
72
8
5/16
12
144
16
3/8
20
240
27
7/16
30
360
41
1/2
50
600
68
9/16
70
840
95
5/8
90
1080
122
3/4
160
1920
217
7/8
250
3000
339
1
360
4320
488
1-1/8
520
6240
705
1-1/4
700
8400
949
M6
5
60
7
M8
11
132
15
M10
22
264
30
M12
38
456
52
M16
90
1080
122
M20
170
2040
230
M30
570
6840
773
M36
950
11400
1288
5
3
10
2
9
8
1
1
6
7
FEMALE
MALE
Figure C Linkage Assembly – Square Drive
5.8
Open/Close Position Adjustment
NOTE: Refer to the appropriate Installation, Maintenance, and
Operating Instructions (IMO) for specific directions on how to
adjust the actuator travel stops or limit switch (see Table 7).