Overview
The Quadrant C-450DA pneumatic actuator is a robust double-opposed piston, rack-and-pinion rotary actuator designed for automated control of quarter-turn valves. This C-Series unit delivers precise, repeatable motion in ball, butterfly, plug, and other rotary valve applications. Built for industrial reliability, the C-450DA combines compact design with high-cycle durability and standardized mounting patterns.
Key Features
- High Torque Output: 450 in-lbs provides sufficient power for most quarter-turn valve sizes
- Double-Acting Operation: Air-powered opening and closing ensures precise valve positioning and fail-safe control
- Durable Materials: Aluminum body with stainless steel fasteners and components resist corrosion in harsh environments
- Adjustable Stops: Independent, bi-directional stops for fine-tuning open and closed positions
- External Position Indicator: Visual feedback on valve status aids monitoring and diagnostics
- Standardized Mounting: ISO 5211 and NAMUR compliance simplifies integration with valve flanges and accessories
Technical Specifications
The C-450DA is engineered for demanding industrial service with the following specifications:
- Actuator Type: Double-opposed piston, pneumatic, rotary (rack-and-pinion)
- Torque Output: 450 in-lbs (51 Nm)
- Maximum Supply Pressure: 120 psi (8 bar)
- Operating Temperature: −40 °F to +200 °F (−40 °C to +93 °C)
- Body Material: Hard-anodized aluminum alloy
- Fasteners: Stainless steel
- Mounting Standard: ISO 5211 compliant
- Accessory Connections: NAMUR interface
- Travel Adjustment: Independent bi-directional stops, 0–90° rotary travel
- Position Feedback: External mechanical indicator
Typical Applications
The Quadrant C-450DA is ideal for:
- Automated ball and butterfly valve control in chemical processing plants
- Plug valve actuation in oil and gas pipelines
- Water treatment and desalination facility valve automation
- HVAC damper and isolation valve systems
- Food and beverage processing line automation
- General industrial valve automation requiring 450 in-lbs of torque at 120 psi or below
Compatibility & Replacements
Compatible With
- ISO 5211 quarter-turn valve flanges (ball, butterfly, plug, diverter valves)
- NAMUR interface accessories and limit switches
- Standard pneumatic supply lines and solenoid valve manifolds
- Pressure ranges from 0–120 psi (0–8 bar)
- Control systems operating quarter-turn isolation or modulation applications
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The C-450DA directly replaces other Quadrant C-Series models in the same torque class when ISO 5211 and NAMUR mounting standards match your valve application.
Works With
- Solenoid directional control valves (4/3 and 4/2 configurations)
- Pneumatic pressure regulators and filters
- Limit switches for position feedback (NAMUR-mounted)
- Pneumatic tubing (standard ISO 4414 fittings)
- PLC/DCS systems via solenoid valve interfaces
