In response to the stringent requirements of industries where any trace of oil contamination is unacceptable, Xiamen Greenair Precision Machinery Co., Ltd. offers a complete Oil Free Screw Air Compressor range complemented by high-performance Air Purification Equipment. From Fixed Speed Oil Free Screw Compressor models for steady baseloads to variable speed variants that adjust to demand, the portfolio guarantees ISO 8573-0 Class 0 certified air, protecting sensitive processes in food and beverage, pharmaceutical, electronics, and chemical sectors.
The core of the oil-free system is the precision-engineered dry screw air end, which operates with absolutely no oil in the compression chamber. The Fixed Speed Oil Free Screw Compressor delivers a reliable constant flow and is ideal for applications with a stable air demand pattern. For facilities where air consumption varies, the variable speed Oil Free Screw Air Compressor adjusts motor speed continuously, maintaining a consistent pressure while significantly lowering energy consumption. Both versions employ high-efficiency IE3 motors and Greenair’s typical robust design, including a large cooler suitable for ambient temperatures up to 55 degrees centigrade and a thermostatic valve for precise thermal regulation.
Achieving truly clean compressed air, however, extends beyond the compressor itself. Greenair integrates the oil-free compressor with comprehensive downstream Air Purification Equipment. To achieve pressure dew points as low as minus 40 or even minus 70 degrees Celsius, an Adsorption Air Dryer with twin-tower desiccant design is employed. This dryer removes moisture vapor that could otherwise promote microbial growth or cause ice formation in critical applications. For general moisture removal, a Refrigerant Air Dryer can be used as a pre-treatment or for less critical uses, bringing the dew point down to around plus 3 degrees Celsius. High-efficiency coalescing and particulate filters complete the Air Purification Equipment setup, ensuring that the delivered air meets the highest purity standards.
Greenair’s patented inlet valve design and intelligent touch-screen controller with RS485 interface are standard across the oil-free series, allowing seamless integration into the plant’s overall Compressed Air System. As a provider of total compressed air solutions, Greenair ensures that the entire system, from the oil-free screw compressor to the dryers and filters, functions cohesively. Adhering to “Quality First,” the company continuously optimizes these products to provide reliable, energy-efficient, and contamination-free air that helps customers protect both their products and their brand reputation.
