Single Stage Air Compressors Lineup
Power: 7.5-250 kW
Pressure: 0.7-1.0 MPa
FAD Capacity: 0.9-43.0 m³/min
Number of compression stage: 1
Lubricant: RO Water
Power: 11-220 kW
Pressure: 0.3-0.4 MPa
FAD Capacity: 2.4-60.0 m³/min
Number of compression stage: 1
Lubricant: RO Water

Power: 7.5-250 kW
Pressure: 0.7-1.0 MPa
FAD Capacity: 0.9-43.0 m³/min
Number of compression stage: 1
Lubricant: RO Water

Power: 11-220 kW
Pressure: 0.3-0.4 MPa
FAD Capacity: 2.4-60.0 m³/min
Number of compression stage: 1
Lubricant: RO Water
Power: 7.5-250 kW
Pressure: 0.8 MPa
FAD Capacity: 1.1-45.5 m³/min
Number of compression stage: 1
Lubricant: Oil
Power: 7.5-250 kW
Pressure: 0.8 MPa
FAD Capacity: 1.1-45.5 m³/min
Number of compression stage: 1
Lubricant: Oil
Power: 7.5-22 kW
Pressure: 0.8-1.6 MPa
FAD Capacity: 1.1-2.3 m³/min
Number of compression stage: 1
Lubricant: Oil
Power: 7.5-22 kW
Pressure: 0.8-1.6 MPa
FAD Capacity: 1.1-2.3 m³/min
Number of compression stage: 1
Lubricant: Oil
How Do Single Stage Air Compressors Work?


In oil-free water-injected screw models, single phase compressors use a rotating helical screw and two symmetrically placed star wheels to compress air. Water injected into the compression chamber absorbs heat, reduces friction, and seals gaps for higher efficiency. After compression, a separator tank divides air and water, with the air discharged and water recirculated within the system.
In oil-flooded screw models, single phase compressors operate by using two interlocking helical rotors that spin in opposite directions to compress air. As air enters the system, it fills the gap between the screw threads or grooves, where it is compressed as the screws rotate. The majority of rotary screw compressors are oil-flooded, where oil is used to seal, lubricate, and cool the compression process. However, oil-free screw compressors are also available for applications requiring contamination-free air.
Both GAIRS and KLINA belong to the GAIRS Group. GAIRS targets the high-end compressed air market and has shifted its focus solely to water-injected oil-free single screw technology. GAIRS’ mission is to deliver 100% clean compressed air while ensuring every GAIRS compressor has the lowest Global Warming Potential (GWP), contributing to a more sustainable environment.
KLINA, in collaboration with trusted partners, offers both oil-injected rotary screw compressors and water-injected oil-free single screw compressors. These models provide efficient, economical, and practical solutions for clients’ compressed air needs.
Yes, we accept OEM orders. We are happy to customize our products to meet your specific requirements. Please provide detailed specifications, including design, configuration, and any other special requests, so we can offer the best solution tailored to your business.
Yes, though compressors with different pressure are not shown on the page, you can always give us an email for inquiry.
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You May Also Want To Know
The following are frequently asked by our customers about single stage air compressors.
A single-stage air compressor compresses air in one stroke, where atmospheric air is drawn into a cylinder and compressed to deliver at a set pressure, typically around 90-145 psi.
A single-stage compressor compresses air only once, while a two-stage compressor compresses air twice, achieving higher pressure and making it suitable for heavier industrial applications.
Single-stage compressors offer simpler design, lower initial cost, easy maintenance, and are generally more compact, making them a great choice for small businesses or DIY users.
For oil-injected compressors, regular maintenance includes checking oil (or water) levels, valves and other spare parts as well as cleaning and replacing filters. Proper maintenance extends the compressor’s lifespan and ensures consistent performance.
At Gairs, single-stage compressors typically reach up to 181 psi (12.5 bar), though some models may go higher to 232 psi (16 bar), depending on the application.