Oil-free Geared Centrifugal Compressors ZHL

Atlas Copco Single Stage Centrifugal Compressor ZHL

The Atlas Copco ZHL oil-free geared centrifugal compressor is designed to provide reliable, clean, and energy-efficient compressed air for applications where air quality is critical.

With a power range of 400–1,400 kW, air delivery from 300–633 m³/min, and operating pressures of 1.0–2.4 bar(e), the ZHL series provides a powerful solution for low-pressure oil-free air applications.

Single stage centrifugal compressor ZHL

Key Features

100% Oil-Free Air

The ZHL series is designed to deliver oil-free compressed air, making it suitable for applications where air purity is essential.

High Energy Efficiency

The geared centrifugal design is engineered to deliver high airflow efficiently, helping reduce energy consumption in continuous-duty applications.

High Air Flow

With airflow of up to 633 m³/min, ZHL compressors are suitable for large-scale low-pressure compressed-air requirements.

Reliable Continuous Operation

Designed for demanding industrial environments and applications requiring stable, continuous compressed air.

Low-Pressure Applications

With operating pressures from 1.0 to 2.4 bar(e), the ZHL is particularly suited to low-pressure industrial processes.

single and two-stage compressor

Technical specification

Technical Property	Value
Capacity FAD l/s	1 111 l/s – 21 667 l/s
Capacity FAD	2 300 cfm – 46 000 cfm
Capacity FAD m³/min	67 m³/min – 1 300 m³/min
Working Pressure	11,5 psig – 29 psig
Installed motor power	250 HP – 3 800 HP

Typical Applications

The Atlas Copco ZHL can be used in a variety of industries, including:

Wastewater Treatment
Pneumatic Conveying
Cement & Concrete
Glass Manufacturing
Food & Beverage
Textile Manufacturing
Chemical Processing
Industrial Aeration
Fermentation
Flue Gas Desulfurization

The ZH and ZHL turbo compressors by Atlas Copco are designed for high efficiency and reliability, providing oil-free air solutions for various industries including food, pharmaceuticals, and textiles. They feature advanced technology for energy savings, low maintenance, and high operational uptime, while ensuring compliance with stringent air quality standards. Atlas Copco’s commitment to innovation and customer service is evident through their extensive support and proven track record in the field.

What is the difference between a single and two-stage compressor?

The word “stage” refers to the number of compression stages the air goes through in order to reach the required air pressure. The high-speed turning impellers create the dynamic pressure build-up in the compressor. The number of impellers and thus stages will depend on the outlet pressure that is needed.
For applications that require 2 bar(g) or less, one impeller or a single-stage compressor is sufficient to meet the pressure demand. With a two-stage or (three-stage) compressor, higher pressures can be reached.

What is a single-stage centrifugal air compressor?

Centrifugal air compressors use centrifugal forces to create flow and pressure. Centrifugal technology is an extremely efficient way to generate compressed air.

The gearbox with the main drive shaft is driven by a motor. Both gearbox and main drive shafts drive the high-speed shafts with one or more impellers. Single-stage turbo compressors only have one impeller and deliver air at a pressure up to 2 bar(g).