PAGE B19
10. Turn the actuator upside down from its previous position
and fasten it in place. The housing face that faced away from
the valve will now be bolted to the bonnet.
11. Position the link arm on the valve shaft so its edge is
about 3/16” below the top edge of the actuator housing as
shown in Figure 6, Page B19.
12. 55 and 85 actuators: Position the stub shaft as shown in
Figure 7, B19. Turn only the stub shaft, not the link arm.
13. Tighten the two cap screws in the link arm.
14. Connect the actuator piping.
15. Apply air pressure to the diaphragm to slide the clevis into
the linkarm (40) or the rod end into the link arm slot (55-85);
secure the rod end in place by installing the shoulder screw.
16. Make sure the stub shaft 0-ring is in place, then place the
gasket and cover on the housing.
17. Relieve the pressure to the diaphragm.
18. Attach the pointer to the stub shaft.
19. Check the open and closed position stops and readjust if
necessary.
20. Pipeline flow may now be restored.
CHANGING MOUNTING POSITIONS
The actuator may be mounted in any of four positions:
standard, 90 degrees,180 degrees or 270 degrees from
standard around the valve stem. In the 90 and 270 degree
positions, the diaphragm housing may not clear the pipeline.
Be sure to determine this clearance before attempting to
change the mounting position.
1. Disassemble the actuator as described in Steps 1 thru 8
of the REVERSING THE ACTION Section of this Instruction.
2. Remove the link arm. Orient the link arm as described in
the Table (Figure 5, Page B17). Reinstall it on the shaft.
3. Set the actuator on the adaptor in the desired position,
then fasten in place.
4. Reassemble the actuator as described in Steps 12 thru 20
of the REVERSING THE ACTION Section of this Instruction.
LINK ARM POSITION
FIGURE 6
STUB SHAFT POSITION
FIGURE 7