100% Oil Free Water-Injected Rotary Screw Air Compressor

High reliability of oil free screw air compressor

• Oil free screw compressor applies rotary single screw air-end.
• By being in market every since 1982, it has undergone practical for over 30 years, all of it’s air quality, power saving and high reliability features have turned out to be state of the art in design and performance.
• Air and water are becoming a major trend in compressor market due to their high compatibility, availability, reliability and environment friendliness.

High efficiency (lubricated water)

• Lubricant water functions
• Serves as sealant, coolant and lubricant.
• Sealing function reduces/seals “blow hole” between rotors and housing to absolute minimum, ensuring efficient compression with delivered air volume per horse power increased by 15% as compared to general dry-type screw units.
• Lubricant water also very effectively absorbs and dissipates heat generated during compression process.

Near isothermal compression(oil free water lubricant screw air compressor):

• Thermal energy and water film, arising from the compressed air cooled by the lubricant water that has being injected into the compression chamber, seals up rotor gaps to prevent air back flow. The ideal isothermal compression thus achieves optimum efficiency. Theoretically, when air at 20℃ is compressed to 7kg/cm2G in a thermal isolation process, the discharge air temperature will be over 250℃, injection of lubrication water that has a cooling effect, into the compression chamber will bring the temperature down to about 40℃, achieving high efficiency ideal isothermal compression.

Oil free water lubricant screw air compressor--Technical parameters

Welcome to know more about water injection screw air compressor:

Photos: Oil free water lubricant screw air compressor

We designed and manufacture oil free screw air end by own factory:

Air cooling oil free screw air compressor flow chart:

Water cooling oil free screw air compressor flow chart:

Application--oil free water lubricant screw air compressor:

1. Food industry
2. Fermentation
3. Cleaning
4. PET, Transport
5. Medical industry etc.

Long interval maintenance periods:

Nearly ideal isothermal compression, direct driven method, smart configuration and precision component design and machining, long bearing service life, all of the above essentially extends interval between regular periodical maintenance.

Shanghai Royal Machinery Co.,Ltd is a high-tech enterprise which specialized in sales and service of compressed air system equipment, and after-treatment equipment, booster compressor, diesel generator and drying equipment, etc.

We have an experienced team. It not only provide high-quality and high-efficiency compressors for users but also provide the best solution for air system equipment during before-sale, selling and after-sale.

Welcome to contact us for inquires and quotation.

All of our screw air compressors are packed by export standard plywood case:

Because of screw air compressor package volume and weight, most of our screw air compressors are shipped by sea.