Overview
The Bettis RPC 450 DA pneumatic valve actuator is a dual-acting rotary actuator engineered for dependable automation of quarter-turn industrial valves. Rated for 120 PSI maximum operating pressure, this model provides balanced torque output for both opening and closing strokes with equal force delivery. The RPC 450 DA is configured for clockwise rotation and features a robust aluminum and ductile iron construction built to withstand demanding process control environments.
Key Features
- Double-Acting Design: Enables bidirectional control with pneumatic actuation on both opening and closing strokes
- 120 PSI Rated Pressure: Optimized for standard industrial pneumatic supply lines (8 bar / 120 psi)
- Clockwise Rotation: Preconfigured CW setting simplifies installation and commissioning
- Compact Footprint: Space-efficient design suitable for tight piping and valve manifold arrangements
- Factory-Lubricated: Pre-lubricated for extended service life with minimal maintenance
- Corrosion-Resistant Construction: Coated body and aluminum pinion design resist industrial corrosion
Technical Specifications
The Bettis RPC 450 DA meets the following performance parameters:
- Maximum Operating Pressure: 120 PSI (8 bar)
- Actuator Type: Rotary, double-acting, rack-and-pinion
- Rotation Configuration: Clockwise (CW)
- Valve Compatibility: Ball, butterfly, and plug quarter-turn valves
- Operating Temperature Range: –20°C to +80°C (–4°F to +176°F)
- Housing Material: Ductile iron with polyurethane powder coating
- Pinion Material: High-corrosion-resistant aluminum alloy
- Lubrication: Factory-lubricated, sealed design
- Part Number: 118235
Typical Applications
The RPC 450 DA is widely deployed in:
- Water and wastewater treatment plants
- Chemical and petrochemical process facilities
- Oil and gas production and refining
- Power generation and steam systems
- HVAC and building automation systems
- Pulp and paper manufacturing
- General industrial valve automation requiring 120 PSI pneumatic supply
Compatibility & Replacements
Compatible With
- Standard industrial pneumatic supply lines (120 PSI / 8 bar)
- Ball valves, butterfly valves, and plug valves
- Quarter-turn applications requiring reliable rotary actuation
- ISO 5211 and SAE interface standards
- Pneumatic control systems and solenoid pilot valve arrays
Replaces / Drop-In Replacement For
The Bettis RPC 450 DA (part number 118235) is a direct replacement for equivalent Bettis RP 450 series rotary pneumatic actuators in the same pressure and torque class. Verify mounting pattern and port configuration with your system integrator before installation to ensure seamless compatibility with existing valve assemblies.
Works With
- 3/2 and 4/2 pneumatic directional control solenoid valves
- Pneumatic manual override systems
- Fail-safe spring return assist options (where applicable)
- Integrated position feedback sensors (external mount)
- Industrial pneumatic hose and tube couplings (ISO 4401 and ISO 1219)
