Actreg ASR850-F10-F12-DS27 Rack & Pinion Pneumatic Actuator – 90°

The Actreg ASR850-F10-F12-DS27 is a high-performance, industrial-grade pneumatic actuator built for precision control of large quarter-turn valves. Utilizing a rugged rack & pinion mechanism, this actuator delivers smooth 90° actuation with robust torque output. Its hard-anodised aluminium housing ensures exceptional durability and corrosion resistance. Designed to support ISO 5211 F10 and F12 mounting interfaces, coupled with a 27?mm DS27 square shaft, it integrates with a wide range of valve types. With full SIL?3 (Safety Integrity Level 3) certification, ASR850 is ideal for critical process automation and safety-instrumented systems.

Key Technical Details

• Model: ASR850-F10-F12-DS27

• Rotation: 90° rack & pinion actuation with external ±5° adjustable travel stops

• Flange Mounting: ISO 5211 F10 and F12 patterns

• Drive Shaft: 27?mm square (DS27)

• Housing Material: Hard-anodised aluminium – lightweight, rugged, and corrosion-resistant

• Variants: Available in both double-acting and spring-return versions

• Operating Pressure: Suitable for 2.5–8?bar compressed air

• Temperature Range: Standard industrial class (approx. −20?°C to +80?°C)

• Safety Compliance: SIL?3 certified with anti-blowout shaft safety feature

Core Features & Benefits

• High-Torque Actuation: Ideal for handling large valves such as ball, butterfly, and plug models

• Standard Valve Mounting: Compatible with ISO F10/F12 flange fittings and DS27 shaft formats

• Accessory Integration: Namur VDI/VDE 3845-compatible interface supports solenoids, limit switches, and positioners

• Maintenance-Friendly Design: External adjustment stops and modular construction enable swift servicing

• Functional Safety Assured: Anti-blowout shaft and SIL?3 certification ensure secure performance in safety-critical loops