- Home
- Products
- Hot
- About Us
- Services
- Industry
- Contact
| Quantity: | |
|---|---|
The LY-WPM series water-lubricated oil-free screw air compressor uses treated water instead of oil as the lubricating and sealing medium in the compression chamber. It is supplied to commercial users and enterprise customers that cannot accept oil carryover in the compressed air, including food and beverage, pharmaceutical, electronics, and textile operations. Because no oil enters the compression chamber, the air output carries no oil mist, and the manufacturer states an oil content of 0 ppm with compliance to ISO 8573-1 Class 0, the Class 0 category defined for oil-free compressed air. The series listed in the specification table covers motor power from 5.5 KW to 250 KW, with rated working pressure options of 8 bar and 10.0 bar, allowing a frame to be matched to the required flow and pressure.
A water injection system supplies treated purified water to the compression chamber during operation. The water forms a film on the rotor and cylinder surfaces, reducing friction between moving parts and sealing the clearance between rotors to prevent air leakage. Unlike oil, water leaves no hydrocarbon residue in the compressed air.
Water conducts compression heat away from the chamber as it circulates, keeping operating temperature lower than an oil-lubricated unit over long working cycles and limiting thermal load on the compression elements. The circulating water also carries heat to the water-cooled heat rejection section, where the cooling-water circuit listed in the table removes it at an inlet water temperature of 32°C.
With oil excluded from the compression process, the system removes the source of oil contamination in the air stream. Output air meets the ISO 8573-1 Class 0 oil-free category stated by the manufacturer, suitable for processes where trace oil would affect product quality or safety.
