In particular on butterfly valves This may be higher compared to Functioning torque because of the unseating in the valve disc off the seats. Working with this find the corresponding actuator using this figure (or greater) and select. Also Verify the valve mounting pad configuration from the valve gap sample. https://pneumatic-actuator-butter66431.blazingblog.com/14342023/detailed-notes-on-เพรสเชอร-เกจ-ค-อ