Key Features
- Pneumatic Quarter Turn Actuator
- Rack & Pinion Operation
- Single Acting Spring Return
- Double Acting Available
- 90° Quarter Turn Rotation
- ±5° Adjustable Travel Stops
- 6–350 Nm Standard Torque
- Up To 13,000 Nm Available
- 2–8 Bar Air Supply
- ISO 5211 Direct Mounting
- F03 to F10 Mounting
- NAMUR Accessory Interface
- 1/4" BSP Air Ports
- VDI/VDE 3845 Compatible
- Hard Anodised Aluminium Body
- Maintenance-Free Operation
- -20°C to +80°C Standard
- High Temperature Options
- ATEX Versions Available
- NAMUR Solenoid Valve Option
- Limit Switch Box Option
- Positioner Options Available
- In Stock
- Free Next Day UK Delivery
Datasheets
Description
Pneumatic Quarter Turn Actuators – ISO 5211 Single & Double Acting
Our pneumatic rack and pinion quarter turn actuators are designed for reliable automation of ball valves, butterfly valves and other quarter-turn valves.
Available in both single acting spring return (AAAR) and double acting (AADA) versions, these compact actuators provide high torque output, long service life and direct ISO 5211 mounting for fast installation.
With torque outputs from 6 Nm to 350 Nm as standard, and larger models available up to 8,000 Nm (spring return) or 13,000 Nm (double acting), these actuators are suitable for everything from compact process valves through to heavy industrial applications.
Valve Function & Operation
Function: Pneumatic quarter turn actuator
Operating types:
Single Acting (Spring Return)
Double Acting
Operating principle: Rack & pinion
Rotation: 90°
Adjustable travel stops: ±5°
Torque range: 6–350 Nm
Larger options available:
Spring Return: up to 8,000 Nm
Double Acting: up to 13,000 Nm
Air supply: 2–8 Bar clean, dry compressed air
Air filtration: 30 micron recommended
Positioner applications: 5 micron filtration recommended
Mounting & Standards
Designed for straightforward installation on quarter-turn valves.
ISO 5211 direct mounting
Mounting flanges:
F03
F05
F07
F10
Drive sizes:
11 mm
14 mm
17 mm
22 mm
NAMUR interface for solenoid valves and accessories
Air ports: 1/4 BSP
Compatible with VDI/VDE 3845 NAMUR solenoid valves
Conforms to:
ISO 5211
DIN 3337
VDI/VDE 3845
ATEX versions available:
Ex II 2GD c T3
Ex II 2GD c T5
Directive 2014/34/EU
Construction
Designed for long service life in demanding industrial environments.
Hard anodised aluminium alloy body
Epoxy coated die-cast aluminium end caps
Lightweight high-strength aluminium pistons
Precision polished internal components
High-quality low-friction bearings
Maintenance-free operation
No internal lubrication required
Compact design with identical dimensions for both spring return and double acting versions
Temperature
Standard: -20°C to +80°C
Optional: -40°C to +180°C
Optional Accessories
Available with a wide range of automation accessories including:
NAMUR solenoid valves
IP67 valve limit switch boxes
Dual SPDT feedback switches
Visual position indicators
Pneumatic and electro-pneumatic positioners
Mounting brackets
Couplings
Installation Recommendation
For reliable valve operation we recommend selecting an actuator with approximately 30% greater torque than the valve breakaway torque. This provides a suitable safety margin for pressure fluctuations, seal wear and long-term reliable operation.
Every actuator is fully function tested before dispatch. Temporary push-in fittings and silencers used during factory testing may be removed when fitting a NAMUR solenoid valve or other control accessories.
Typical Applications
Automated ball valves
Butterfly valves
Water treatment
Chemical processing
Food & beverage production
Pharmaceutical manufacturing
Industrial automation
Process control
OEM machinery
Utilities and energy systems
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Technical Specification
Brand: Connexion
Model: AAAR/AADA
Width: 65.00 mm
Height: 97.50 mm
Depth: 163.50 mm
Weight: 2.00 kg
Valve / Product Type: Air Actuated Valve
Body Material: Aluminium
Function: 2/2 Failsafe Closed, 2/2 Failsafe Open, 2/2 Double Acting
Operation: Direct Acting from 0 Pressure
Options required: Mounting Holes, Position Feedback Closed, Position Feedback Open+Closed, Position indication Visual
Spares (Coils, Connectors, Seals): Actuator Head Air + Motor
Found in these Categories
Pneumatic Valve Actuator Single or Double Acting ISO5211
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