Air Torque Pneumatic Actuator AT801U-D-A F16/F25-N-55DS – 90° Rotation

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Product Description

Air Torque Pneumatic Actuator AT801U-D-A F16/F25-N-55DS

Double Acting | Rack & Pinion | 90° Rotation | Anodised Aluminium | SIL 3 Certified

The Air Torque AT801U-D-A F16/F25-N-55DS is a rugged double-acting pneumatic actuator engineered for high-performance quarter-turn valve automation. This actuator features a precision rack & pinion drive mechanism, delivering consistent 90° rotation, while being built with a hard-anodised aluminium housing for enhanced durability and resistance to corrosion. Compatible with both ISO 5211 F16 and F25 flange patterns and equipped with a 55?mm square (DS55) drive shaft, it fits seamlessly with large-diameter valve assemblies. It is fully SIL 3 certified, making it ideal for integration into safety-instrumented systems requiring high integrity.


Key Features:

  • Double Acting (D-A): Provides controlled motion in both valve directions

  • High Torque Delivery: Smooth and stable performance across full stroke

  • Flexible Valve Mounting: ISO F16 or F25 flange with 55?mm DS55 shaft compatibility

  • Anodised Aluminium Body: Lightweight yet resilient in harsh environments

  • SIL 3 Certified: Suitable for use in functional safety loops

  • Precision Rack & Pinion: Ensures accurate and durable 90° valve actuation

  • Low-Maintenance Design: Compact profile allows for efficient installation and service


Technical Specifications:

ModelAT801U-D-A F16/F25-N-55DS
Actuation TypeRack & Pinion – Double Acting
Rotation90 Degrees
Mounting FlangesISO 5211 F16 or F25
Drive Shaft Interface55?mm Square (DS55)
Body MaterialHard Anodised Aluminium
Operating Pressure2.5 to 8 bar
Torque OutputHigh torque (for large valve sizes)
CertificationSIL 3 Functional Safety

Technical Specs

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