Page 15 | 26 Rev: 01/18/2021
If necessary, adjust the valves. To adjust the valves:
1. Loosen the lock nut, and then close the control valves by turning them clockwise.
2. Open each valve 1.5 turns counterclockwise.
If necessary, adjust the valves for smooth operation. To make this adjustment:
1. The control valve on the closed port regulates the butterfly valve’s opening speed.
2. The control valve on the open port regulates the butterfly valve’s closing speed.
3. Closing the valves slows the speed of the butterfly valve.
4. Opening the valves increases the speed of the butterfly valve.
NOTE:
Make sure to remove the flow control valve before returning the system to normal operation.
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