Air Pressure & Torque Relationship
Mechanisms and practical applications in valve actuators
Fundamental Torque Mechanism
Compressed air applies force against the piston/diaphragm, generating rotational torque through mechanical linkages (gears/levers). Higher pressure intensifies force, enabling greater torque to overcome valve resistance (stems/discs/seals).
Pressure-to-torque ratio follows linear relationship per Pascal's principle in ideal conditions.
Precise Torque Modulation
Adjusting pressure helps actuators handle high-friction valves while preventing incomplete closure or excessive wear.
Fail-Safe Balancing
Pressure must counterbalance spring force for reliable emergency positioning.
Pressure Limits
Exceeding rated thresholds risks cylinder deformation and seal failure.
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