Adjustable valve pre-tightening force issue
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What is the impact of excessive pre-tightening force on control valves?
In this case, the valve may not open fully and cannot reach 100% opening
What is the impact of excessive pre-tightening force on control valves? 1 Reducing the end point of the spring range for air-shut valves (relaxing the spring pre-tightening force) or increasing the air supply pressure can both increase the allowable pressure difference; 2 Increasing the start point of the spring range for air-open valves (tightening the spring pre-tightening force) can also increase the allowable pressure difference.