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325 HP Dual Stage Water Lubricated Oil Free Rotary Screw Air Compressor
325 HP Dual Stage Water Lubricated Oil Free Rotary Screw Air Compressor
325 HP Dual Stage Water Lubricated Oil Free Rotary Screw Air Compressor
325 HP Dual Stage Water Lubricated Oil Free Rotary Screw Air Compressor
325 HP Dual Stage Water Lubricated Oil Free Rotary Screw Air Compressor
325 HP Dual Stage Water Lubricated Oil Free Rotary Screw Air Compressor
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325 HP Dual Stage Water Lubricated Oil Free Rotary Screw Air Compressor

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*All Pictures shown are for illustration purposes only. Actual product may vary due to enhancement*

10-year Warranty with Free Parts and Service Guidance

8 - 10 Week Lead Time

Why choose a Master Water Lubricated Oil Free Rotary Screw Air Compressor?

  • Utilizes Japanese high-efficiency air end technology and a variable frequency drive which features a soft start, for optimal energy use, leading to cost savings and reduced carbon footprint. 
  • Permanent magnet heavy-duty IP 55 motor.
  • Innovative oil-free screw design, low-temperature compression, and low RPM operation for extended lifespan and reduced maintenance. 
  • Offers high efficiency and low operational costs through water lubrication single-stage compression, and minimizes maintenance expenses. 
  • Fully accessible sound-attenuated corrosion-proof enclosure. Constructed with stainless steel 304 and special alloy materials, processed by CNC machining for rust-free, reliable operation. 
  • Pure copper radiator with stronger heat dissipation than aluminum counterparts, 5-10 years longer service life than other suppliers. 
  • Advanced design and water lubrication provide enhanced compression, ensuring a consistent reliable air supply. 
  • 304 Stainless steel liquid-cooled heat exchanger, minimum pressure valve, intake valve, etc. 
  • Water-lubricated, single-stage compression guarantees oil-free operation, ideal for critical air quality applications. 
  • User-friendly Full-colour High-end LED touchscreen controller, low maintenance and extended durability to ensure a seamless ownership experience (pre-programmed plug & play system). 
  • Direct drive results in low maintenance and high efficiency by eliminating any power transmission losses due to belts and pulleys.

 

Water Lubricated Oil-Free Compressors offer more than 15% energy savings compared to Dry Oil-Free Compressors!

Model  

MST-220ZS-28.0/2.0  

Power     

1st stage:  

250 HP (185 kW)     

2nd stage:  

75 HP  (55 kW)  

Pressure     

20 Bar / 290 PSI  

Air Flow     

988 CFM  

28.0 m3/min  

Noise Level     

78 dB    

Outlet size     

DN 65  

Weight     

4600 kg  

Dimensions (L*W*H)     

165*79*83 Inches 

 

Working principle

Water Lubricated Oil-Free Compressors VS. Dry Oil-Free Compressors 

Type  
Water Lubricated Oil-Free  
Dry Oil-Free  
Operating Temperature  

Isothermal compression at 40c  

High-temperature operation  

Exhaust Temperature  

at 45°C+  

at 1200°C  

Rotating Speed  

2950RPM, Low speed and high airflow  

18000RPM, High speed   

Lubrication method  

Impurities in the air and circulating water are filtered through a water filtration system  

Both gearboxes are lubricated with oil.   

(high temperature and high speed)  

Noise  

≥ 10 dB less than dry compressors.  
(Low motor speed means less noise)  
  

Higher dB.  
(High motor speed means more noise)  

Maintenance Cost  

Relatively simple structure, low maintenance cost  

The structure is relatively complex, and the maintenance cost is high

OPTIONS/ADD-ONS AVAILABLE 

For more details, call or text:+1 (647) 363-5872

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