How to Adjust an Actuated Butterfly Valve DoItYourself.com
Step 6 – Adjusting the Thrust Bearing. If there is gap at the bottom or top of the valve after repairing the seat adjusting the thrust bearing will solve the problem. Locate the lock nuts securing the thrust bearing and loosen them. Adjust the lower nuts uniformly until the butterfly disk is either raised or lowered depending on the gap.
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