9/304-Cummins-Stage IV Air Compressor

9/304-Cummins-Stage IV
Free Air Delivery: 
29.9 m³/min (1060 cfm)
8.6 bar (125 psig)

The 9/304 compressor has a free air delivery of 29.9 m³/min (1060 cfm) at a discharge pressure of 8.6 bar (125 psig). This model is part of a new family of five large Doosan portable compressors that also includes the new 9/274, 12/254, 17/244 and 21/224 models and offers free air deliveries from 21.5 to 30.0 m3/min at operating pressures from 8.6 to 21.0 bar.

The new Stage IV compressors build on the high standards established by the Stage IIIB models, again combining compact size and easy serviceability to ensure a fantastic return on investment. All the new compressors are powered by the Cummins QSL9 T4F 6-cylinder diesel engine which meets the Stage IV regulations without the need for a DPF. In the new 9/304 compressor, the QSL9 engine provides 247 kW (331 HP) of power at a full load speed of 1800 rpm.

9/304-Cummins-Stage IV Air Compressor

As in the previous Stage IIIB models, the new Stage IV compressors offers the best of both worlds: reduced size and footprint to minimise transport costs and unparalleled service access to optimise maintenance work. The compressors offer a compact size that offers advantages for truck-mounted configurations.

With regard to serviceability, a wide opening rear canopy together with a removable panel provides easy access to the radiator from either side for cleaning. The gull wing doors and drop-down side panel also provide unmatched access to the units, facilitating service, inspection and repair.

The new Stage IV compressors have a full colour digital display, with manuals in electronic form available on the display. Several additional features such as multiple air outlets, a 110% bunded base, central drains and forklift slots have also been incorporated as standard.

The highly modular design offers the flexibility for a wide range of optional equipment to be added easily. The wide range of options available allows the new Stage IV compressors to be adapted to a specific application, such as the fitting of an aftercooler with water separator and additional filters (IQ-system) as well as the use of a paint scheme to match the customer’s livery.

9/304-Cummins-Stage IV Air Compressor


Free-Air Delivery - m³/min (cfm)29.9 (1060)
Rated operating Pressure - bar (psig)8.6 (125)
Air Discharge outlet2 x 1¼”, 1 x 2”
Fuel Tank Capacity - L (gls)485 (107)
DEF/AdBlue tank capacity - litres31