Overview
The Master Pneumatic BFD50-2 mini aid air filter delivers reliable compressed air treatment in a compact footprint. Built for 1/4 NPT porting, this filter is engineered to remove water vapor, oil aerosol, and particulate contamination from pneumatic supply lines. The Mini Sentry design makes it ideal for point-of-use filtration in confined spaces while maintaining system efficiency across industrial automation, control circuits, and portable tool applications.
Key Features
- Compact mini aid design for tight installation spaces
- 1/4 NPT port connections for standard pneumatic lines
- Polycarbonate or metal bowl construction for moisture visibility and durability
- Internal automatic drain option to minimize operator maintenance
- Rated for 200 psig maximum inlet pressure
- Compatible with standard compressed air systems in manufacturing and automation
Technical Specifications
- Part Number: BFD50-2
- Manufacturer: Master Pneumatic
- Port Type: 1/4 NPT female
- Maximum Inlet Pressure: 200 psig (14 bar)
- Bowl Capacity: 2 ounces (60 ml)
- Filter Element: Polyethylene, 5 μm rated
- Bowl Material: Polycarbonate plastic (standard) or optional metal
- Operating Temperature Range: 40°F to 125°F (4°C to 52°C) for plastic bowl
- Drain Type: Internal automatic or manual options
- Body Material: Die-cast zinc
Typical Applications
The Master Pneumatic BFD50-2 is widely used in:
- Industrial automation control circuits requiring clean, dry air
- Pneumatic instrument lines and sensor systems
- Point-of-use filtration downstream of larger filtration stages
- Portable pneumatic tools and air-driven equipment
- Small-bore pneumatic networks in manufacturing facilities
- OEM equipment requiring compact air preparation modules
Compatibility & Replacements
Compatible With
- Standard 1/4 NPT pneumatic tubing and fittings
- Industrial compressed air systems rated to 200 psig
- Pneumatic control circuits and instrumentation networks
- Standard air compressor discharge or mid-line installation
- FRL (Filter-Regulator-Lubricator) modular systems
Replaces / Drop-In Replacement For
- Verify compatibility with your system integrator before ordering. The BFD50-2 is a direct replacement for other Master Pneumatic Mini Sentry filters with matching 1/4 NPT porting and 200 psig rating.
Works With
- Compressed air systems using ISO 1219 standard pneumatic symbols and circuits
- Pneumatic hose and tubing manufactured to NFPA standards
- Industrial automation platforms requiring point-of-use air filtration
- Standard manual and automatic drain systems


















