Low Pressure Oil-Free Screw Compressors ZE & ZA (VSD)

Atlas Copco ZE ZA Compressor

Atlas Copco ZE & ZA (VSD) low-pressure oil-free screw compressors provide a reliable and energy-efficient source of compressed air for demanding industrial applications.

Low pressure oil-free screw compressors ZE & ZA (VSD)

Designed for continuous operation in challenging environments, the ZE and ZA series combines proven oil-free screw technology with Variable Speed Drive (VSD) control. The system automatically adjusts compressor output to match actual air demand, helping reduce unnecessary energy consumption while maintaining a stable air supply.

With Class 0 certified oil-free air, ZE & ZA compressors are particularly suitable for applications where air purity and product safety are critical.

Oil-free screw compressors ze3

The advantages of our low pressure screw compressor technology

Reducing your operational costs

As energy costs are a compressor’s biggest lifecycle cost, it’s crucial that you consider the energy efficiency aspect of a compressed air installation when searching for your next compressed air investment. We are always looking for new ways to increase the energy savings of your production process, whether that means raising the industry standards for all low pressure screw compressors, optimizing our solutions to fit each process, or offering you additional ways to recover energy.

High uptime – innovative core design

Our ZE/ZA positive displacement screw compressors are designed with the highest reliability in mind, helping you avoid unexpected downtime of your process. Reliability starts at the core of our units: with our components. The cooling jacket cools both bearings and the element housing to keep the element at the lowest possible temperature, which increases the lifetime of your components. Furthermore, the Elektronikon ® Mk 5 precisely controls the oil temperature to ensure optimal oil lubrication of the components for the best performance.

A complete package: avoid unexpected installation costs

The whole is greater than the sum of its parts: by offering you a fully equipped unit that is ready for operation upon arrival, you not only avoid any unexpected installation costs, it also ensures that all components are aligned to work together and offer you the best performance. For instance, the water-cooled aftercooler which cools the process air is a necessary component as hot air can compromise the quality of your product. That is why it is always integrated into the design of our units – even in 500 kW VSD units which are often available on the market without an integrated water-cooled aftercooler – excluding the need to buy and install one separately.

Furthermore, by combining your low pressure screw compressor installation with dryers, air filters, or even one of our service offerings, we can help you design a Smart AIR Solution that ensures all parts of your compressed air installation are fully optimized to operate together.

Technical Specifications

Technical Property	Value
Capacity FAD l/s	36 l/s – 3,003 l/s
Capacity FAD	141 cfm – 4,423 cfm
Working Pressure	14.5 psig – 58 psig
Installed motor power	40 HP – 700 HP
Capacity FAD m³/min	2 m³/min – 180 m³/min

Main Applications

Pneumatic Conveying

ZE & ZA compressors provide stable, oil-free low-pressure air for conveying cement, powders, granules and other bulk materials.

Truck Unloading

The compressors can supply the air required for efficient unloading of bulk materials from tank trucks while helping prevent product contamination.

Food & Beverage

Class 0 oil-free air is suitable for production processes where compressed-air purity is essential. Atlas Copco specifically highlights applications in the food and beverage industry.