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40 Bar Two-Stage PM VFD Oil-Free Water-Injected Screw Compressor Energy-Efficient PET Blow Molding Solution with Class 0 Oil-Free Air

1. Air delivery: 20m 3/min 290cfm
2. Pressure: 2.5~4.0MPa/25~40 bar/362.5~580 psi
3. Power: 222kW/296hp
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Product Introduction

This oil‑free rotary screw compressor operates with water‑based lubrication and is driven by a permanent‑magnet variable‑speed motor. In place of conventional oil, the system circulates purified water or a water‑based fluid, which ensures that the discharged air contains zero oil contamination. Such clean output makes the unit perfect for industries that demand exceptionally pure air quality.

RWH-250W (6)


Key Attributes of the 220kW Two‑Stage Screw Compressor

  • 15–25% Less Energy Use – Consumes significantly less power than single‑stage equivalents.

  • Greater Air Delivery – Provides up to 20% additional volume at the same motor rating.

  • Extended Durability – Minimises wear on bearings and rotors, prolonging equipment life.

  • Reduced Operational Expenses – Lowers servicing frequency and enhances overall dependability.

  • Consistent Thermal Performance – Incorporates inter‑stage cooling to maintain low discharge heat.

  • Smaller Installation Space – Integrates components compactly to save floor area.

  • Advanced Automation – Equipped with a PLC and IoT‑enabled remote monitoring.

  • Environmentally Conscious – Decreases carbon footprint.

  • High‑Efficiency Motor – Meets IE3/IE4 premium efficiency benchmarks.

RWH-250W (2)

Primary Use Cases

  • PET Container Blow‑Moulding – Delivers clean, high‑pressure air essential for shaping bottles.

  • Food & Beverage Sector – Guarantees fully oil‑free air that comes into direct contact with products.

  • Pharmaceutical Manufacturing – Supplies purified air for fermentation, tablet coating, and packaging lines.

  • Electronics & Semiconductor Fabrication – Provides contaminant‑free air for cleanroom environments.

  • High‑Pressure Nitrogen Boosting – Partners with nitrogen generators for laser cutting and electronic assembly.

  • Research & Analytical Laboratories – Offers quiet, stable, and oil‑free high‑pressure air for experiments and instruments.

    PET应用行业


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