Air Torque Pneumatic Actuator AT051U-S6-A F03-N-9D – 90° Rotation

Air Torque Pneumatic Actuator AT051U-S6-A F03-N-9D – Rack & Pinion, 90° Rotation, Anodised Aluminium, SIL?3

The Air Torque AT051U-S6-A F03-N-9D is a premium-grade spring-return pneumatic actuator optimized for safe, precision control of quarter-turn valves. Featuring a durable rack & pinion driving mechanism, this actuator delivers dependable 90° motion and returns the valve to its default (fail-safe) position if air supply fails. With a hard-anodised aluminium housing, it offers excellent resilience to corrosion while maintaining a lightweight structural strength. Fully SIL?3 rated, it's ideal for critical systems requiring functional safety compliance.

Key Features

• Fail-Safe Operation (S6 Spring-Return): Returns valve to default position upon loss of air pressure.

• Consistent Torque: Rack & pinion mechanism ensures stable performance throughout the stroke.

• Valve Interface Standard: ISO 5211 F03 flange with 9?mm square (N-9D) output shaft for compatibility with compact valve stems.

• Durable Construction: Hard-anodised aluminium body for long service life in industrial environments.

• Safety Certification: SIL?3 compliant for integration into safety loops.

• Precision Control: External ±5° travel stops for fine stroke limitation.

• Accessory-Ready Interface: Namur VDI/VDE 3845 port is pre-configured for solenoids, limit switches, or positioners.

Technical Specifications