- Class 0 oil-free, clean, and oil-free compressed air
- Water-lubricated compression technology
- Corrosion-resistant airend materials
- Intelligent monitoring and alarm functions
- Fixed-speed and variable-speed configuration options available
Water Injected Screw Air Compressor Manufacturer
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Water lubricated air end
Made of stainless steel, there is no danger of rust or corrosion on the air end head. Using water as the compression seal and cooling medium, the air is cleaner after rinsing with water, and it can be pure and oil-free
High efficiency motor
Special motor for air compressor, imported bearings, protection grade IP54, insulation grade F, suitable for use in various environments, suitable for harsh environments such as dust and high temperature
Efficient water filtration
The water filter is a full-flow filter. The shell is made of stainless steel with a special filter core. It has high filtration accuracy and long life. It can reliably remove impurities in the system to ensure the supply of clean lubricating water.
Plate cooler
It is made of stacked metal sheets with a certain corrugated shape. The material is corrosion-resistant, easy to clean, and has a long service life. Unit volume, large heat exchange area, high heat exchange efficiency, keep the water temperature within a reasonable range 3 Compact structure, light weight, and small footprint.
Tube-fin air cooler
The heat exchange tube is made of copper, which will not exchange with ions in water, is corrosion resistance, and long service life. With high- an efficiency axial fan, the air volume is sufficient, the cooling effect is good, and the external air duct is not easy to accumulate dust
Water-vapor separation tank
Adopt an excellent cyclone separation structure design, which has been tested and proved to have a good water-vapor separation effect. Use stainless steel material to prevent corrosion. A water level with a three-level sensor alarm automatically eliminates excess water, or makeup water automatically when there is less water.
Advantages of Water Injected Screw Air Compressor
Looking for a reliable oil-free air compressor for your industrial application? Sollant water-lubricated single screw compressors combine water-injected compression, a balanced rotor design and application-specific configurations to support dependable compressed air production.
Oil-Free Compression
Water replaces lubricating oil in the compression chamber, helping reduce the risk of oil contamination from the compression process.
Balanced Single Screw Design
Two symmetrically arranged star wheels work with the main screw rotor to help balance operating forces and support smooth, low-vibration operation.
Effective Cooling
Water helps remove heat during compression, supporting lower operating temperatures. Actual energy performance depends on the model and operating conditions.
Low-Noise Design
Sound-absorbing enclosure materials and compressor design features help reduce operating noise. Ask our team for model-specific noise data.
Corrosion-Resistant Materials
Selected configurations can feature 316L stainless steel components and compatible FFKM seals for demanding industrial applications. Confirm material availability for your required configuration.
Intelligent Monitoring
Depending on the model, monitoring and alarm functions can help operators track operating conditions and respond to potential faults.
Water Injected Screw Air Compressor Parameters
How Does a Water-Lubricated Screw Air Compressor Work?
A water-lubricated single screw air compressor uses a precision-engineered screw rotor and two star wheels to compress air. During operation, water is injected into the compression chamber to provide sealing, cooling and lubrication. This integrated design supports oil-free compression and helps maintain stable operating conditions for demanding industrial applications.
- Air Intake
Ambient air enters through the intake system and is directed into the compression chamber. The intake filter and air inlet design help manage incoming particles. - Water-Lubricated Compression
The main screw and two star wheels form compression chambers. Water supports sealing, cooling and lubrication as the trapped air is compressed. - Air-Water Separation
The discharge mixture passes through the designed separation system to separate entrained liquid water from the compressed air. - Compressed Air Delivery
The compressed air is delivered to the application or downstream treatment equipment according to the required pressure, flow and air-quality specifications.
Manufacturing & Assembly
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Frequently Asked Questions
A water-lubricated oil-free screw air compressor uses water in the compression chamber to support sealing, cooling and lubrication instead of conventional lubricating oil in that chamber. The compressor configuration and downstream air treatment should be selected according to the required compressed-air quality.
Air enters the compression chamber formed by the main screw and two star wheels. As the rotor assembly operates, the trapped air is compressed while injected water helps provide sealing, cooling and lubrication. The discharge system then separates entrained water from the compressed air.
The two star wheels are positioned on opposite sides of the main screw. This configuration is designed to improve dynamic balance and support stable operation. Actual vibration, efficiency and durability depend on the specific compressor design and operating conditions.
Potential applications include pharmaceutical production, food and beverage processing, electronics, semiconductor manufacturing, battery production, automotive manufacturing and other industrial processes requiring oil-free compressed air. Suitability depends on the required pressure, flow, air quality and operating environment.
Maintenance depends on the specific model and operating environment. Typical areas to review include water quality, filters, water circulation, separation components, seals, cooling systems and controller alarms. Follow the manufacturer’s maintenance schedule and operating manual.
A Class 0 oil-free air compressor is a compressor system that meets the strictest oil contamination classification defined by ISO 8573-1, based on the applicable certification and test scope.
Several factors influence compressor performance, efficiency and service life:
– Working pressure: Required discharge pressure affects power consumption and equipment selection.
– Air flow demand: The compressor should match the application’s peak and average compressed-air requirements.
– Water quality and management: Water quality, circulation, filtration and maintenance must follow the manufacturer’s recommendations.
– Operating environment: Ambient temperature, humidity, ventilation and installation conditions can affect performance.
– Air-quality requirements: Filtration, drying and other downstream treatment may be needed to meet the required compressed-air specifications.
– Maintenance and monitoring: Regular inspection and maintenance help support reliable operation and identify potential problems early.
To identify the right solution, provide Sollant with your target pressure, required air flow, application and operating conditions. This information helps the team recommend a suitable compressor configuration.
A water-lubricated screw air compressor uses water to support sealing, cooling and lubrication during compression. Key advantages can include reduced risk of oil contamination from the compression chamber, effective heat management, and a balanced design that supports smooth operation.
Depending on the model and configuration, additional benefits may include low-noise operation, corrosion-resistant materials and intelligent monitoring functions. Actual performance, air quality and operating costs depend on the compressor specifications, operating conditions and downstream air-treatment equipment.
