Rack & Pinion Pneumatic Actuator
WPA Series Pneumatic Actuator for Quarter-Turn Valve Automation
WEISSMILLER Rack & Pinion Pneumatic Actuator is designed for reliable automation of quarter-turn valves such as butterfly valves, ball valves, and plug valves. The WPA Series is available in Double Acting and Single Acting Spring Return configurations to suit various industrial valve automation requirements.
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Product Overview
The WPA Series Rack & Pinion Pneumatic Actuator provides smooth and efficient rotary motion for automatic valve operation. It converts compressed air pressure into quarter-turn mechanical movement, allowing valves to open and close accurately in automated piping systems.
The actuator is available in Double Acting type, where air pressure is used for both opening and closing operation, and Single Acting Spring Return type, where air pressure operates the actuator in one direction while internal springs return it to the fail-safe position.
Key Features
Rack & Pinion Design
Provides reliable quarter-turn rotary operation for valve automation with stable torque output.
Double Acting Type
Uses compressed air for both opening and closing operation, suitable for standard automated valve control.
Spring Return Type
Uses compressed air in one direction and spring force for automatic return to fail-safe position.
EN ISO 5211 Mounting
Designed with standard actuator mounting interface for easy installation on compatible valves.
Position Indicator
Visual open and close indicator supports easier operation monitoring during installation and service.
Wide Operating Range
Suitable for compressed air operation in general industrial environments.
Technical Specification
| Item | Specification |
|---|---|
| Product Type | Rack & Pinion Pneumatic Actuator |
| Series | WPA Series |
| Brand | WEISSMILLER |
| Available Type | Double Acting (DA) / Single Acting Spring Return (SR) |
| Sample Model | WPA083DA |
| Mounting Standard | EN ISO 5211 |
| Operating Pressure | 4 – 8 bar |
| Operating Temperature | -20°C to 80°C |
| Operation | Quarter-Turn Rotary Operation |
| Rotation Angle | 90° ± 5° |
| Body Material | Aluminium Alloy |
| Body Finish | Anodized / Coated Finish |
| Indicator | Open / Close Position Indicator |
| Compatible Valve | Butterfly Valve, Ball Valve, Plug Valve, and Other Quarter-Turn Valves |
| Accessories | Limit Switch Box, Solenoid Valve, Air Filter Regulator, Manual Override |
Available Actuator Types
Double Acting - DA
Double Acting actuator uses compressed air to operate both opening and closing movement. This type is suitable for applications where air supply is available for full automatic control in both directions.
Single Acting / Spring Return - SR
Single Acting Spring Return actuator uses compressed air for one direction and spring force for return movement. This type is suitable for fail-open or fail-close applications depending on valve assembly configuration.
Product Details
Additional product views showing the actuator body, position indicator, end cap, mounting interface, and nameplate details for easier product identification and valve automation selection.
Applications
Related Products
Limit Switch Box
Valve position monitoring device used with pneumatic actuator assemblies.
Solenoid Valve
Pneumatic control valve used to control air supply direction to actuator.
Air Filter Regulator
Air preparation unit used to regulate and filter compressed air supply.
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