Sullair 425 Portable Compressor.
High-output portable air for civil works, industrial maintenance and demanding remote-site compressed-air applications..

Australia Wide Delivery
Expert Support
Technical advice from selection to commissioning.
Serviced & Maintained
Built for Tough Sites
High-output portable air. Reliable by design.
The Sullair 425 delivers 425 acfm (12.0 m³/min) at 125 psi (8 bar), with an adjustable 80–125 psi range for changing site requirements.
Its liquid-cooled Caterpillar 3054C Tier 2 diesel engine provides 96 kW at 2200 rpm, supported by dynamic flow boost and 0 to 100% capacity control.
Large service doors, a removable modular canopy, heavy-duty towable running gear and the SSAM shutdown system support reliable operation, practical mobility and simpler maintenance.
- 425 acfm air delivery
- 5.5–8 bar working-pressure range
- 96 kW Caterpillar 3054C Tier 2 diesel engine
- Dynamic flow boost
- 2,014 kg wet towable weight
- Removable modular canopy
- SSAM shutdown protection
- Adjustable-height towable running gear

Rated performance
Rated operating data for the supplied Sullair 425 towable portable compressor.
| Performance item | Rated value |
|---|---|
| Free air delivery | 425 acfm / 200 L/s |
| Metric air delivery | 12.0 m³/min |
| Rated pressure | 8 bar / 125 psi |
| Pressure range | 5.5–8 bar / 80–125 psi |
| Rated engine speed | 2200 rpm |
| Rated engine power | 129 hp / 96 kW |
| Noise level | 76 dB(A) at 7 m |
The supplied Sullair 425 flyer identifies a portable rotary screw compressor with 0 to 100% capacity control and dual-pressure selection without mechanical adjustment.
Technical specifications
Key machine data.
- Actual run time will vary based on load and operating conditions.
Dual-Pressure Control
A high/low selector changes the operating pressure without mechanical adjustment.
Dynamic Flow Boost
Additional flow performance supports demanding pneumatic tools and changing site loads.
Easy Service Access
Large service doors place the fuel tank, filters, coolers and key components within practical reach.
Modular Canopy
The removable multi-piece canopy simplifies major service and helps reduce replacement costs.
SSAM Protection
Automatic shutdown and annunciation protect against critical engine, compressor and low-fuel conditions.
Three-Stage Filtration
Separate dry-type filters help protect the engine and compressor air systems.
Towable Running Gear
An adjustable hitch, E-Z lube axle, transport chains and leaf-spring suspension support practical site moves.
Quiet Operation
The enclosure meets the stated 76 dB(A) sound requirement measured at seven metres.