Flowserve FlowAct Series User Instructions page 16

Reassemble the Actuator onto
the valve:
1. Mount the actuator onto the bonnet and tighten the
yoke lock nut (76) clockwise.
NOTICE
2. Move the actuator to the open position.
3. Screw in the lock nut (113) onto the valve stem so it
is screwed all the way and lower coupling (345) three
turns and move the actuator into the closed position.
NOTICE
lows can be prevented by tightening the packing follower.
4. Move the actuator back into the open position and
adjust the distance between the lower coupling (345)
and upper coupling (249) by adjusting the stroke length.
Valve size
15 - 25
15 - 50
65 - 100
125 - 150
200 - 300
1)
400
Table 11: Stroke adjustment length (
5. Move the actuator to the close position and install the
cap screws (240).
6. Lock the lock nut (113). Keep upper coupling (249)
from turning by securing with a wrench.
7. If a handwheel-side was mounted reassemble as next
(see pages 37 - 38).
NOTICE
safety position when actuated. The lever arms must be
positioned so that this condition is given.
8. Place the handwheel-side on the yoke and straighten
it, mount the washer (140) and hex bolt (150) and
tighten it, if applicable.
16
The legs of the yoke should be parallel
to the flow direction.
The plug must be aligned onto the
seat. The cushioning effect of the bel-
Stroke
1/2" - 1" 10 mm 0.394
+ 0,5
1/2" - 2" 20 mm 0.787
+ 0,5
3" - 4" 40 mm 1.574
+ 0,5
6" 60 mm 2.362
+ 0,8
8" - 12" 80 mm 3.150
1)
+ 0,8
16" 100 mm 3.937
+ 0,8
depends on the valve
1)
series)
The handwheel-side always presses
on the coupling, depending on the
FlowAct Diaphragm Linear Actuator
9. Check handwheel-side for correct limit position, if
applicable.
10. Reassemble the accessory on the valve as necessary,
see relevant accessory User Instruction.
11. Perform three full strokes and check the free movement
of the actuator.
12. For installation the valve into the pipeline and further
steps see User Instructions for applicable valve types.
13. Log the maintenance interval and the work performed.
344
249
in.
+ 0.02
in.
+ 0.02
in.
+ 0.02
in.
+ 0.03
in.
+ 0.03
in.
+ 0.03
Item
Part
WW EU
76 5.10 Yoke lock nut
113 5.2 Lock nut
240 5.5 Cap screw
Table 12: Coupling parts identification
FCD VLENIMFACTA4 10/16
Figure 9: Yoke assembly drawing
Item
WW EU
249 5.3
344 5.4
345 5.1
Actuator
240
76
345
113
Valve
Part
Upper coupling
Lock nut
Lower coupling