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Double-acting actuators are integral components
in a wide range of industrial applications. As their name implies, these
actuators rely on air pressure for both the extension and retraction of the
piston.
The double-acting actuator features two
ports for air intake. When compressed air is introduced through one of the
ports, the high-pressure air exerts a strong force on the surface of the
piston. This force propels the piston in a specific direction, enabling precise
operation of mechanical devices. To retract the piston, the airflow is
redirected to the other intake port. Concurrently, the air on the initial side
is expelled through the corresponding exhaust port.
Take the pneumatic valve control system as
an example. Double-acting actuators, following the aforementioned mechanism,
can rapidly and accurately open or close valves in response to commands from
the control system. Compared to single-acting actuators, which use air pressure
for piston extension and springs for retraction, double-acting actuators offer
faster response times and greater thrust. They can achieve rapid reciprocating
motion of the piston, enhancing system efficiency. Therefore, they are highly
suitable for industrial scenarios with strict requirements for response speed
and control accuracy, such as automated production lines in the petrochemical
and power sectors.
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