Flowserve PMV D20 - Manual (Page 19)

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follower pin farther out on the feedback
lever to reduce the angle of rotation.
NOTE: Stroke the actuator carefully and
ensure the follower arm does not
interfere with valve parts, actuator or
positioner. Do not adjust the follower pin
too near to the slot end of the take-off
arm.
The minimum lateral distance should be
approximately 5 mm (0,2 inches) to pre-
vent bending of the feed-back
mechanisim.
6.3 Rotary actuators
Mounting the PMV D20 positioner on
a quarter-turn actuator (closed or
open by spring)
The mounting of a pneumatic double-pis-
ton part-turn valve actuator (in
accordance with VDI/VDE 3845) is
described as an example by using the
following equipment:
Quarter-turn valve actuator: Rack &
pinion or scotch yoke, closed or open by
spring.
Figure 3. Mounting on a Rod Actuator (IEC 534 part 6)