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Yes, a 90-degree pneumatic actuator is
specifically designed for quarter-turn valves, which require a 90-degree
rotation to fully open or close. Common quarter-turn valves compatible with
these actuators include:
Ball Valves – The most common type,
rotating 90° to allow or block flow.
Butterfly Valves – Use a disc that turns
90° to regulate flow.
Plug Valves – Utilize a cylindrical or
tapered plug that rotates a quarter turn.
Why Not Suitable for Multi-Turn Valves?
Limited Rotation – Pneumatic actuators with
90° rotation cannot operate multi-turn valves (e.g., gate, globe, or diaphragm
valves), which require multiple rotations to open/close.
Torque & Mechanism – Quarter-turn
actuators provide on/off or modulating control but lack the continuous rotation
needed for linear valves.
Exceptions & Modifications
Some actuators can be adapted with gears or
linkages for partial-turn applications, but standard 90° pneumatic actuators
are optimized for quarter-turn valves only.
For multi-turn valves, linear or
Scotch-Yoke pneumatic actuators are more appropriate.
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