Mounting To Standard Valtek Rotary Valves; Figure 9: Valtek Rotary Follower Arm; Figure 10: Valtek Rotary Take-Off Arm; Figure 11: Valtek Rotary Mounting - Flowserve Logix 520MD+ User Instructions

5.3 Mounting to Standard Valtek Rotary Valves

The standard rotary mounting applies to Valtek valve/actuator assem-
blies that do not have mounted volume tanks or hand-wheels. The
standard mounting uses a linkage directly coupled to the valve shaft.
This linkage has been designed to allow for minimal misalignment
between the positioner and the actuator. Refer to Figure 10 through
Figure 12.
1. Fasten the spline lever adapter to the splined lever using two 6 x
1/2" self-tapping screws.
2. Slide the take-off arm onto the spline lever adapter shaft, orient-
ing the arm to the current valve position. Insert the screw with
star washer through the take-off arm and add the second star
washer and nut and tighten.
Spline Lever
Adapter
Take-Off
Arm Assembly

Figure 10: Valtek Rotary Take-Off Arm

3. Attach follower arm to positioner feedback shaft using the star
washer and 10-32 nut.
4. Rotate the follower arm so the follower pin will slide into the slot
on the take-off arm. Adjust the bracket position as needed noting
the engagement of the follower pin and the take-off arm slot. The
pin should extend approximately 2 mm past the take-off arm.
When properly adjusted, securely tighten the bracketing bolts
5. Using four 1/4-20 x 1/2" bolts, fasten positioner to universal
bracket using appropriate hole pattern (stamped on bracket).
18
Logix 520MD+ and 510+ Digital Positioners FCD LGENIM0105-15-AQ – 05/16
®
6. Using a ½" end wrench and two 5/16-18 X ½" bolts, attach
bracket to actuator transfer case pad. Leave these bolts slightly
loose until final adjustments are made.
7. Rotate follower arm so the follower pin will slide into the slot on
the take-off arm. Over-rotate the follower arm if needed so the
arm moves freely through the intended travel.
NOTE: The feedback shaft has a clutch mechanism that allows
for over-rotation of the shaft for easy adjustments.
8. Adjust the bracket position as needed noting the engagement of
the follower pin and the take-off arm slot. The pin should extend
approximately 1⁄16" past the take-off arm. When properly adjusted,
securely tighten the bracketing bolts.
Follower Arm
Universal Bracket

Figure 9: Valtek Rotary Follower Arm

Figure 11: Valtek Rotary Mounting

Feedback Shaft