Overview
The Speedaire 1A483 is a 1/4″ NPT inline compressed air filter designed for pneumatic tool and equipment protection. This compact filter removes particulate contaminants down to 40 microns, maintaining air quality in your system without restricting flow. Ideal for workshops, manufacturing plants, and field service applications where clean air is essential.
Key Features
- 40 Micron Filtration — Removes particles and contaminants that can damage tools and fittings
- Compact Inline Design — 1/4″ NPT ports allow drop-in integration into existing air lines
- Aluminum Bowl — Durable, lightweight construction resistant to corrosion
- Bronze Filter Element — High-flow media for consistent airflow with minimal pressure drop
- Fast Bowl Drainage — 0.1 oz capacity with easy manual drain for maintenance
Technical Specifications
- Part Number — 1A483
- Filter Rating — 40 micron
- Connection Type — 1/4″ NPT (both inlet and outlet)
- Maximum Operating Pressure — 500 PSI
- Maximum Flow Rate — 40 CFM
- Maximum Operating Temperature — 300°F
- Bowl Capacity — 0.1 oz
- Bowl Material — Aluminum
- Filter Element Material — Bronze
- Overall Dimensions — 2.25″ H × 0.75″ W × 2.25″ L
- Weight — 0.21 lbs
Typical Applications
- Pneumatic air tool lines (drills, grinders, nail guns, impact wrenches)
- Air spray painting systems
- General compressed air system protection
- Portable and stationary compressor setups
- OEM equipment air inlet lines
Compatibility & Replacements
Compatible With
- Any pneumatic system with 1/4″ NPT ports
- Compressed air lines rated for 500 PSI or less
- Air compressors, regulators, and tool couplers with 1/4″ NPT connections
- Systems operating below 300°F ambient temperature
Replaces / Drop-In Replacement For
The Speedaire 1A483 is a standard OEM replacement for equivalent 1/4″ NPT inline filters in Grainger supply chains and is compatible with other 40-micron filter designs using identical port configurations.
Works With
- 1/4″ NPT male threaded couplers and adapters
- Pneumatic hose rated for 500 PSI
- Inline regulator and lubricator combinations
- Portable and stationary air compressor systems

