Overview
The Worcester Controls Series 39 Model 30 is a proven pneumatic rotary actuator engineered for dependable control in industrial valve automation. Built on an opposed rack-and-pinion design with twin pistons, this unit delivers precise torque output for both on/off and proportional/throttling applications in process control systems, HVAC damper operation, and pipeline isolation.
Key Features
- Twin-piston rack-and-pinion design — Full-length nickel-coated tooth engagement for extended service life
- Polished guide rod construction — Minimizes piston O-ring wear and enables 5 million cycle life before overhaul
- Double-acting and spring-return options — Flexible configuration for failsafe or powered-return applications
- Full Namur (VDI/VDE 3845) top mounting — Enables easy interchangeability of switches, positioners, and limit devices
- 90° shaft rotation — Approximately 2° overtravel at each end for reliable actuation
- Factory lubricated — Ready to install; requires filtered and lubricated compressed air
Technical Specifications
- Output Torque (at 80 PSI): 920 in·lbs
- Maximum Operating Pressure: 120 PSI
- Shaft Rotation: 90° with 2° overtravel at each end
- Actuator Type: Double-acting or spring-return
- Mounting Standard: ISO 5211 and Namur VDI/VDE 3845
- Cycle Life: 5 million cycles before overhaul
- Fasteners: Stainless steel
- Spring Protection: Corrosion-protected springs
- Air Supply: Filtered and lubricated compressed air recommended
- Warranty: Two years
Typical Applications
- Rotary ball valve actuation (on/off and proportional control)
- HVAC damper and louver positioning
- Pipeline isolation and diversion valves
- Process control valve modulation
- Water treatment and wastewater system actuation
- Industrial steam and thermal applications
Compatibility & Replacements
Compatible With
- ISO 5211 and Namur VDI/VDE 3845 mounted ball valves
- Standard pneumatic compressed air systems (filtered and lubricated)
- Solenoid pilot controls and proportional positioners
- Limit switch and position indicator assemblies
- Top-mounted watertight and hazardous location switches
Replaces / Drop-In Replacement For
- Worcester Controls Series 39 Model 30 39 SN R6
- Flowserve Series F39 pneumatic actuators (equivalent size)
- Other double rack-and-pinion pneumatic actuators with ISO 5211 / Namur mounting
Works With
- Worcester ACCESS integrated control platform
- Pneumatic proportional control systems
- Solenoid on/off control valves
- Position feedback and limit switch instrumentation
- Building management systems (BMS) for HVAC integration
