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Product data sheet
FieldQ
FieldQ
Copyright © Emerson. The information in this document is subject to change without notice. Updated data sheets can be obtained from our website
www.emerson.com/fieldq or from your Emerson Automation Solutions - Actuation Technologies Center:
America’s:
+1 281 477 4100
Europe:
+36 22 53 0950
Asia/Pacific:
+65 67 77 8211
1.606.06 Rev. 0 page 1 of 3
October 2017
FieldQ Valve Actuator
Full Stroke Adjustment Option
Description
FieldQ actuators with the Full Stroke Adjustment option are
used where the maximum opening (or closing) position of the
valve needs to be reduced, for instance to adjust the
maximum flow capacity of a remote operated valve to 50%.
Operation
Full Stroke Adjustment screws (1) are fitted to both end caps and
the screw length is such that adjustment is possible through the
full outward stroke/rotation of the actuator.
Screwing in the Full Stroke Adjustment screws will reduce
the stroke.
Note:
- Only the outward stroke can be adjusted with the Full Stroke
Adjustment screws.
In case of assembly code CW, limit stop (3) is redundant.
In case of assembly code CC, limit stop (2) is redundant.
- For the inward stroke the standard limit stops can be used:
- Limit stop (2) for assembly code CW
- Limit stop (3) for assembly code CC
Rotation
Factory set:
90°±0.5°.
Adjustable range:
(1) Full stroke adjustment screws:
-3° to +93°
(2) Standard stroke adjustment screws:
-3° to 15°
Sizing
Applying the stroke adjustment option will change the torque
output level of spring return actuators depending on the
amount of stroke adjustment. Please consult page 2 and the
torque data sheets (1.602.02 Nm or 1.602.03 lbf.in) to define
the torque output of a spring return actuator.
90°
0°
90°
0°
-3°
+15°
-3°
93°
Adjustable range:
Full stroke adjustment
screws (1)
Adjustable range:
Standard stroke adjustment
screws(2, 3)
1
2
3
1
96°
Len
gth
Fig. 1. Reducing the flow throught the valve with full stroke
adjustment option on the actuator.
Dimensions
The dimensions of the actuator remains the same except the
length of the actuator due to the longer Full Stroke
Adjustment screw (see table below).
Length Full stroke adjustment units at 90° rotation
Spring return
Double acting
mm
Inch
mm
Inch
QS0040
234
9.21
QD0040
175
6.89
QS0065
299
11.77
QD0065
208
8.19
QS0100
317
12.48
QD0100
231
9.09
QS0150
340
13.39
QD0150
257
10.12
QS0200
456
17.95
QD0200
313
12.32
QS0350
457
17.99
QD0350
332
13.07
QS0600
541
21.30
QD0600
417
16.42
QS0950
585
23.03
QD0950
456
17.95
QS1600
683
26.89
QD1600
562
22.13