Compared to single-stage compressors, a two-stage is much closer to isothermal compression. This is achieved by the injection of fresh oil between the stages which reduces the inlet temperature to the second stage. This lower inlet temperature increases efficiency by reducing the compression ratio between the stages. In addition, leakage between the rotor seals is significantly reduced resulting in outstanding volumetric efficiency.

• Two-stage air compressors are closer to the ideal isothermal compression
• Reduced leakage increases volumetric efficiency
• Saves 10-15% of energy compared to single-stage compressors
• Increases flow by 10-15% compared to single-stage compressors
• Lower pressure differential increases efficiency and reliability
• Low heat load
• Easy maintenance and service
• Lowest life cycle cost of any compressor on the market

Why buy a Dullant screw compressor?

Efficiency: Rotary screw compressors are known for their high efficiency, providing a continuous and reliable source of compressed air with minimal energy consumption. This efficiency translates to cost savings over time.

Reliability: Rotary screw compressors are designed for continuous operation, making them highly reliable for industrial applications. They have fewer moving parts compared to reciprocating compressors, resulting in less wear and tear and fewer breakdowns.

Compact Design: Rotary screw compressors have a compact design, allowing for easy installation in various industrial settings, including factories, workshops, and production lines. Their small footprint makes them ideal for facilities with limited space.

Low Noise Levels: Rotary screw compressors operate quietly compared to other types of compressors, making them suitable for environments where noise levels need to be minimized, such as offices or residential areas near industrial facilities.

Versatility: Rotary screw compressors can be used for a wide range of applications, from powering pneumatic tools and machinery to providing compressed air for manufacturing processes such as packaging, welding, and painting.

Applications and uses

Screw air compressors find extensive applications across various industries due to their versatility, reliability, and efficiency. Here are some common applications and uses:

1. Manufacturing: Screw air compressors are widely used in manufacturing facilities for powering pneumatic tools such as drills, grinders, sanders, and impact wrenches. They provide a continuous and reliable source of compressed air to support production processes.
2. Automotive Industry: In automotive workshops and assembly plants, screw air compressors are used for inflating tires, operating pneumatic tools, and powering paint spray guns. They are essential for maintaining efficiency and productivity in automotive repair and manufacturing operations.
3. Construction: Screw air compressors play a vital role in construction sites for operating pneumatic tools like jackhammers, nail guns, and concrete breakers. They are also used for sandblasting, powering pneumatic pumps, and providing air for ventilation systems.
4. Mining and Quarrying: In mining and quarrying operations, screw air compressors are used for drilling, blasting, and powering pneumatic machinery for material extraction and processing. They provide a reliable source of compressed air in harsh and demanding environments.
5. Oil and Gas Industry: Screw air compressors are utilized in the oil and gas industry for various applications, including powering pneumatic valves and actuators, operating drilling rigs, and providing compressed air for offshore platforms and refineries.
6. Food and Beverage Industry: In food and beverage processing facilities, screw air compressors are used for packaging, bottling, and conveying applications. They provide clean and oil-free compressed air, ensuring compliance with food safety standards.
7. Textile Industry: Screw air compressors are employed in textile manufacturing for operating air-jet looms, spinning machines, and dyeing equipment. They provide a reliable source of compressed air for various stages of the textile production process.
8. Chemical and Pharmaceutical Industry: In chemical and pharmaceutical plants, screw air compressors are used for mixing, blending, and conveying applications. They provide compressed air for pneumatic conveying systems, fluidized bed reactors, and agitation processes.
9. Printing and Packaging: In printing and packaging facilities, screw air compressors are used for powering pneumatic cylinders, air knives, and vacuum pumps. They play a critical role in ensuring precise and efficient operation of printing presses and packaging machines.
10. Medical and Dental Applications: Screw air compressors are employed in medical and dental clinics for providing compressed air to dental drills, air-powered surgical tools, and breathing apparatus. They are essential for maintaining hygiene and efficiency in medical and dental procedures.