How can we determine the bench set of the control valve
Spring force against line pressure is called bench set, Pressure range required to stroke the actuator the rated valve travel with no valve forces present. Your bench set will be determined by the sizing of your valve for the application.
You can’t just randomly slap any actuator on with any bench set. Spring range, travel, process pressures and fluid should all be taken into account when doing sizing for a control valve for a certain application