Overview
The Wilkerson WSA-04-FM0 is a compact pneumatic liquid separator engineered for oil and water removal from compressed air systems. Rated for 200 PSI maximum operating pressure with 50 CFM flow capacity, this separator delivers reliable liquid-gas separation for applications requiring clean, dry compressed air. The automatic internal drain float design eliminates the need for manual condensate management, making it ideal for industrial pneumatic systems that demand minimal downtime and consistent air quality.
Key Features
- Automatic float drain system discharges collected oil and water without manual intervention
- 1/2″ NPT connection ports for standard pneumatic line integration
- Rated 200 PSI maximum operating pressure with 50 CFM flow capacity
- Compact 7.34″ height and lightweight design for space-constrained installations
- Cast zinc body construction for durability and corrosion resistance
- Effective for downstream air receiver, desiccant dryer, and aftercooler protection
Technical Specifications
- Model: WSA-04-FM0
- Connection Size: 1/2″ NPT (inlet and outlet)
- Maximum Pressure: 200 PSI (14 bar)
- Maximum Flow Rate: 50 CFM @ 100 PSI
- Operating Temperature Range: 32°F to 150°F (0°C to 66°C)
- Overall Height: 7.34″
- Overall Width: 3.35″
- Drain Type: Automatic Internal Float
- Body Material: Cast zinc
- Weight: 3.0 lbs (approx. 2.6 lbs per some sources)
- Manufacturer: Wilkerson (Parker Hannifin Pneumatic Division)
Typical Applications
- Compressed air filtration systems requiring liquid separation
- Downstream protection of heatless regenerative desiccant dryers
- Post-aftercooler liquid removal to prevent downstream equipment damage
- Industrial pneumatic systems in manufacturing, food processing, and pharmaceutical environments
- Prevention of oil carryover in tool-intensive or high-demand pneumatic circuits
Compatibility & Replacements
Compatible With
- Standard pneumatic compressed air systems with NPT port configurations
- Wilkerson FRL (Filter-Regulator-Lubricator) product lines
- Aftercooler discharge lines for condensate removal
- Desiccant dryer feed or outlet lines
- Industrial air compressor discharge systems rated 200 PSI or lower
Replaces / Drop-In Replacement For
- Earlier WSA-04 series separators (WSA-04-M00 models with manual drain)
- Cross-reference: Grainger part 5Z771
- Previously installed 1/2″ NPT liquid separators in legacy systems
Works With
- Parker Hannifin Wilkerson pneumatic product ecosystem
- All standard NPT-threaded compressed air components
- Wilkerson regulators and lubricator product series
- General-purpose pneumatic filtration packages and assemblies
