Air Torque Pneumatic Actuator AT651U-S10-A F16-N-46DS – 90° Rotation

The Air Torque AT651U-S10-A F16-N-46DS is a robust spring-return pneumatic actuator designed to provide fail-safe valve control in heavy-duty industrial environments. Featuring a durable rack & pinion design, it delivers precisely controlled 90° actuation with dependable torque delivery. Its hard-anodised aluminium housing offers excellent resistance to corrosion and mechanical wear. The actuator is compatible with ISO 5211 F16 flange mounting and utilizes a 46?mm square DS46 shaft—ideal for large valve systems. Fully SIL?3 certified, it supports integration into functional safety systems requiring high reliability.

Key Features

• Fail-Safe Spring-Return (S10 model): Automatically repositions the valve to a safe state when air pressure is lost.

• Consistent Torque: Rack & pinion drive ensures smooth actuation throughout the entire rotation.

• Valve Mount Compatibility: Designed for ISO 5211 F16 flange mounting with a 46?mm DS46 drive shaft.

• Durable Construction: Hard-anodised aluminium housing engineered for longevity in harsh operating conditions.

• Safety Certification: SIL?3 rated for use in high-integrity control loops.

• Stroke Limitation: External ±5° travel stops for precise positioning at the ends of stroke.

• Accessory Ready: Namur VDI/VDE 3845 mounting interface for solenoids, limit switches, and positioners.

Technical Specifications