Air Torque Pneumatic Actuator AT501U-D-A F10/F12-N-27DS – 90° Rotation

Air Torque Pneumatic Actuator AT501U-D-A F10/F12-N-27DS – Rack & Pinion, 90° Rotation, Anodised Aluminium, SIL?3

The Air Torque AT501U-D-A F10/F12-N-27DS is a heavy-duty double-acting pneumatic actuator offering high torque and precise 90° motion, designed for industrial-grade quarter-turn valve automation. Powered by a rugged rack & pinion mechanism, it delivers consistent actuation and is housed in hard-anodised aluminium for superior resistance to corrosion and wear. Compatible with ISO 5211 flange options (F10 or F12) and a 27?mm square (DS27) output shaft, this actuator supports medium-to-large valve connections. Fully SIL?3 certified, it is ideal for demanding process control and safety-critical applications.

Key Features

• Double-Acting Construction (D-A): Provides positive control in both opening and closing directions.

• Stable Torque Delivery: Rack & pinion drive ensures smooth operation throughout the stroke.

• Wide Valve Interface Support: Fits ISO F10 or F12 flanges with DS27 shaft for flexible valve integration.

• Durable Housing: Anodised aluminium body ensures reliable operation in harsh industrial environments.

• Safety Integrity: SIL?3 certification ensures suitability in functional safety loops.

• Travel Limiting: ±5° external adjustable stops for precise stroke end positioning.

• Accessory Mount Ready: Namur VDI/VDE?3845 interface for integration with solenoids, positioners, or limit switchboxes.

Technical Specifications

Ideal Applications

• High-torque automation of ball, butterfly, or plug valves in oil & gas, power generation, water treatment, chemical processing, and utilities.

• Safety-critical systems requiring reliable SIL?3-rated actuator performance.

• Valves with ISO F10 or F12 flange interfaces and DS27 shaft connections.