Overview
The Quadrant C-450DA pneumatic actuator is a double-opposed piston, rack-and-pinion design built for fast and efficient automation of ball, butterfly, and rotary control valves in demanding industrial environments. This actuator is a robust and efficient solution for automating quarter-turn valves, designed for demanding industrial applications, delivering reliable performance and durability. It features 450 in-lbs of torque output and is constructed from aluminum and stainless steel materials.
Key Features
- Double-acting operation utilizes air pressure to control both opening and closing actions, ensuring precise valve positioning.
- High torque output of 450 in-lbs, suitable for operating a wide range of valve sizes and types.
- Aluminum body with stainless steel components, offering corrosion resistance and longevity in harsh environments.
- Complies with ISO 5211 and NAMUR standards, facilitating easy integration with various valves and accessories.
- Adjustable travel stops allow fine-tuning of valve open and close positions for optimal performance.
- External position indicator provides clear visual feedback on the valve’s status, aiding in monitoring and maintenance.
Technical Specifications
- Actuator Type: Double-Acting Pneumatic Rack & Pinion
- Pressure Rating: Up to 120 PSI (8 bar)
- Torque Output: 450 in-lbs
- Body Material: Hard Anodized Aluminum with Stainless Steel fasteners
- Operating Temperature Range: −40 °F to +200 °F (−40 °C to +93 °C)
- Mounting Standard: ISO 5211 compliant
- Accessory Connections: NAMUR standard
- Position Feedback: External position indicator (standard)
- Travel Stops: Adjustable, bi-directional
Typical Applications
Quadrant actuators are designed for fast, efficient, and economical operation of ball, butterfly, and other rotary valves. Common applications include:
- Chemical and petrochemical process control
- Water treatment and wastewater management
- HVAC and building automation
- Oil and gas production facilities
- Power generation and steam systems
- Food and beverage manufacturing
- Pulp and paper mills
Compatibility & Replacements
Compatible With
- ISO 5211 mounting pattern ball, butterfly, plug, and rotary control valves
- NAMUR interface accessories and solenoid valve blocks
- Standard pneumatic supply systems (80–120 PSI)
- Position indicator and limit switch modules
- Mounting adapters and valve interface plates
Replaces / Drop-In Replacement For
The Quadrant C-450DA serves as a direct replacement for other C-Series 450 in-lbs rated actuators where ISO 5211 mounting and 120 PSI operation are specified. Verify specific model compatibility with your system integrator before ordering.
Works With
- Pneumatic control valve systems
- Solenoid directional control valves (4/3, 4/2 ported)
- Pressure regulators and filter units
- Limit switch and position sensing modules
- Manual and automated override mechanisms
- Pressure relief and safety valve networks














