Overview
The Worcester 3 45 6 6RTSW R3 combines a 3-inch Series 45 ball valve with a Series 39 (R3) pneumatic actuator. This assembly is engineered for dependable quarter-turn valve control in demanding industrial fluid handling and process automation environments. The dual-piston actuator design delivers compact, high-torque operation with minimal air consumption, making it ideal for on/off or proportional flow control applications.
Key Features
- Dual-piston pneumatic actuator design for maximum torque output and even weight distribution
- Rack-and-pinion principle with piston guide rods for precise part alignment and reduced friction
- Quarter-turn operation for rapid open/close cycling and emergency response
- Low air consumption and energy-efficient performance
- Supports both on/off and throttling (modulating) control functions
- Proven design suitable for HVAC, water treatment, chemical processing, and industrial valve automation
Technical Specifications
- Valve Type: Series 45 3-piece ball valve, 3-inch
- Actuator Series: F39 pneumatic, R3 revision
- Design: Dual-piston, rack-and-pinion with guide rods
- Operation: Quarter-turn (90° actuation)
- Control Modes: On/off or throttling (proportional)
- Standard Ports: Pipe-threaded (NPT) or screw ends
- Materials: Standard carbon steel body; stainless steel options available
- Seals: TFE (Teflon) or reinforced TFE seat materials
- Pressure Rating: Consult manufacturer for specific ASME rating
- Temperature Range: Standard -20°F to +160°F (consult datasheet for extreme service)
Typical Applications
The Worcester 3 45 6 6RTSW R3 is suitable for:
- HVAC and building automation (duct dampers, zone control)
- Water treatment and wastewater process control
- Chemical processing and liquid handling
- Industrial steam and hot water circulation loops
- Cooling water and chilled water distribution systems
- Flow rate regulation and emergency shutdown applications
Compatibility & Replacements
Compatible With
- Flowserve Worcester Controls Series 44, 45, and 59 ball valves (3-piece design)
- Standard pneumatic supply systems (air pressure 40–100 psig typical)
- Industrial PLC and SCADA control systems via solenoid valve interfaces
- Limit switch assemblies for position feedback
- Spring return kits for fail-safe operation
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. Actuator mounting and end connection types (NPT, screw, flanged, or butt-weld) must match the installed valve body. Consult Flowserve or your distributor for specific model interchangeability.
Works With
- Pneumatic proportional valve controllers and solenoid pilot systems
- Positioner assemblies for precise flow modulation
- Standard industrial compressed air networks
- Flowserve control packages and integrated automation systems
- Manual override hand wheels (available as accessory)
