Air Torque Pneumatic Actuator AT451U-D-A F10/F12-N-27DS – 90° Rotation

Product Description

Air Torque Pneumatic Actuator AT451U-D-A F10/F12-N-27DS – Rack & Pinion, 90° Rotation, Anodised Aluminium, SIL?3

The Air Torque AT451U-D-A F10/F12-N-27DS is a high-performance double-acting pneumatic actuator engineered for reliable quarter-turn valve automation. Featuring a rugged rack & pinion mechanism, it delivers precise 90° motion and is built with a hard-anodised aluminium housing to withstand harsh industrial environments. Compatible with ISO 5211 F10 or F12 flange mounts and incorporating a 27?mm square (DS27) drive shaft, it supports a wide range of medium to large valve interfaces. Fully SIL?3 certified, the AT451U is well-suited to safety-instrumented installations where torque consistency and robust performance are essential.

Key Features

• Double-Acting Operation (D-A): Delivers control in both valve directions.

• Accurate Torque Delivery: Rack & pinion design ensures balanced torque throughout the stroke.

• Flexible Flange Interface: Supports ISO F10 or F12 flange with DS27 shaft compatibility.

• Durable Housing: Hard-anodised aluminium for long-term performance in corrosive environments.

• Functional Safety Compliance: SIL?3 certified for use in safety-critical control applications.

• Adjustable End Stops: External ±5° travel stops for fine stroke end setting.

• Accessory Mount Interface: Standard Namur VDI/VDE?3845 ready for solenoids, positioners, or switchboxes.

Technical Specifications

Technical Specs