• WS04-75 series fixed screw air compressor
WS04-75 series fixed screw air compressor
The WS series twin-screw air compressor is a premium series of air compressors designed and developed by Shouli Company based on a thorough investigation and research of global market demand and competitors, and the wisdom of outstanding engineers from China, the United States, France, and Australia. It took more than two years to design and develop.
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The WS series twin-screw air compressor is a premium series of air compressors designed and developed by Shouli Company based on a thorough investigation and research of global market demand and competitors, and the wisdom of outstanding engineers from China, the United States, France, and Australia. It took more than two years to design and develop. This product has the characteristics of beautiful appearance, compact structure, high efficiency and energy saving, and low noise. The whole machine adopts a box structure, optimizes the design of the intake and exhaust ducts, uses the original American compressor host and high-efficiency NEMA motor, and adopts high-quality components such as electronic automatic drainage system. At the same time, it is designed with heavy humanization and reduces noise, providing spacious application and maintenance space, facilitating the use and management of users, and is welcomed and praised by customers.




  1. The intake capacity regulating valve has excellent and reliable performance
  2. Long life bearings, reliable rotors, high-quality screw assemblies
  3. Nema 4 high-efficiency motor, excellent motor cooling design, longer motor service life
  4. Luxury microcomputer control
  5. The Optimalair super air filter has a filtration efficiency 10 times higher than other filters
  6. Sulube lubricating oil, biodegradable, with an exhaust oil content of less than 2ppm
  7. Realize sequential control of multiple air compressors without adding devices
  8. The smallest footprint
  9. Low noise, as low as 67 decibels
  10. Environmentally friendly, healthy, and safe design




  1. 7.6-13 bar
  2. 0.4-2.28 m3/min(04-15)
  3. 2.2-6.8 m3/min(18-37)
  4. 5.65-14.7 m3/min(45-75)


Optional configuration:

  1. Air cooling or water cooling (water cooling is only applicable to units above 45kW)
  2. Motors with different levels of protection
  3. Variable capacity control or variable frequency control
  4. WS18-75 24KT model
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