Overview
The SMC AFF-EL22B is a replacement coalescing filter element engineered for main line filtration in compressed air systems. This element removes water, oil vapor, and other contaminants down to 5 microns, protecting downstream equipment and extending component service life. The unit is compatible with SMC AFF22 filter cases and delivers reliable performance across industrial automation, manufacturing, and pneumatic control applications.
Key Features
- Removes water, oil vapor, and other contaminants down to 5 microns
- 1.3 times increased capacity over old AF models
- Easy maintenance—slide the old element out, slide the new one in
- Lighter weight than old-style modular AF with thickness reduction of resin case providing increased capacity
- Modular design allows connection with other SMC air preparation equipment
- Lasts approximately 2 years depending on conditions
Technical Specifications
- Operating Pressure (Max): 145 PSI (1.0 MPa)
- Operating Pressure (Min): 7.25 PSI (0.05 MPa)
- Operating Temperature Range: 41°F (5°C) to 140°F (60°C)
- Filtration Rating: 5 microns
- Element Type: Coalescing
- Weight: Approximately 1 pound
- Filter Cartridge Style: Replaceable element
Typical Applications
SMC main line filters can remove impurities such as oil, water, and foreign matter in compressed air and can improve the function of a dryer in the downstream, extend the life of precision filters, and prevent trouble with equipment. The AFF-EL22B element is ideal for:
- Industrial pneumatic control systems
- Manufacturing and assembly equipment
- Air compressor aftercooler applications
- Systems requiring robust oil and water separation
- OEM and end-user maintenance programs
Compatibility & Replacements
Compatible With
- SMC AFF22 filter cases
- SMC modular air preparation systems
- Standard pneumatic compressed air lines
- Industrial automation control applications
Replaces / Drop-In Replacement For
- AFF-EL22B-F (variant)
- Original SMC AFF-EL22B filter elements
- Legacy AF series filter cartridges (with increased capacity)
Works With
- SMC AFF series main line filter housings
- Standard pneumatic ISO 4401 threaded connections
- Manual and auto-drain configurations
- Compressed air systems up to 145 PSI


















