Air Torque Pneumatic Actuator AT551U-S10-A F14-N-36DS – 90° Rotation

Product Description

Air Torque Pneumatic Actuator AT551U-S10-A F14-N-36DS – Rack & Pinion, 90° Spring-Return, Anodised Aluminium, SIL?3

The Air Torque AT551U-S10-A F14-N-36DS is a heavy-duty spring-return pneumatic actuator designed for reliable and fail-safe automation of large quarter-turn valves. Featuring a robust rack & pinion drive mechanism, this actuator ensures smooth 90° motion, and its spring-return design moves the valve to a preset safe position upon air loss. The durable hard-anodised aluminium housing offers excellent corrosion resistance and long-term service life. With compatibility for ISO 5211 F14 flange mounting and a 36?mm square (DS36) output shaft, it's ideal for robust valve connections. Fully SIL?3 certified, it is suited to safety-critical systems in industrial environments.

Key Features

• Fail-Safe Spring-Return (S10): Valve automatically returns to a safe position if air pressure fails.

• Stable Torque Profile: Rack & pinion drive ensures consistent torque and smooth stroke.

• Interface Compatibility: ISO F14 mounting with DS36 shaft supports large valve installations.

• Corrosion-Resistant Construction: Anodised aluminium body for durability in harsh conditions.

• Safety Certified: SIL?3 rated for safe deployment in functional safety systems.

• External Travel Stops: ±5° adjustable end-stops for precise positioning control.

• Accessory Interface: Namur VDI/VDE?3845 port preconfigured for solenoid valves, limit switches, or positioners.

Technical Specifications

Technical Specs