IMO-227 EN
13
IMO 8/17
5. Insert the actuator end of the coupling (1) from the bot-
tom of the bracket (2) into the protruding bearing (3).
Figure 15 Linkage Assembly – Key Drive
6. Press the coupling (1) upward until the bearing (3) sits
flush on the bearing shoulder of the coupling (1) and is
flush with the top flange of the bracket (2).
Figure 16 Proper bearing locations
7 .4
Bracket Attachment to Valve
1. Lower the bracket/coupling assembly on the valve,
aligning the slot in the bottom of the coupling (1) with
top of the valve stem.
2. Align the four bracket mounting screw holes with the
tapped holes on the valve bonnet.
3. Insert the four hex head cap screws (6) and lockwashers
(7) into the tapped holes. Tighten to values in Table 5.
7 .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 actua-
tor is also in the closed position. EXCEPTION: lf mounting a
spring-return actuator for “spring-to-open” operation; cycle
the valve to the open position and proceed with the actua-
tor AND valve in the open position.
7 .6 Coupling to Actuator
Key Drive Actuators (Figure 15): Install the key (4) into the
key slot of the coupling (1). The key should be filed to close-
ly fit into coupling and actuator keyway. If the fit is loose,
apply Loctite® Keyfit or equivalent.
Male/Female Square Drive Actuators (Figure 17): No
coupling prep required.
7 .7 Bracket Attachment to Actuator
1. For QPX1/M, QPX2/M, QPX4/M and QPX5/M; and
Torq-Handle® A and B actuators, attach adapter plate (5)
to the actuator using the four socket head cap screws (10).
Tighten fasteners to values in Table 5 for steel and cast iron
actuators or Table 6 for aluminum actuators
Figure 17 Linkage Assembly – Square Drive
5
3
10
2
9
8
1
1
6
7
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