Oil Free Air Compressor

Product Details

FS ZW Series Oil Free Screw Compressors produce totally  Oil-less air with a water injected compression process that is completely free  of any hydrocarbons. Highly efficient, fixed speed models deliver up to 15%  energy savings over dry screw type compressors. Low operating temperatures, slow  direct-drive running speeds ensure high reliability with the most advanced air  end in the industry.

Variable Speed Driven ZW  compressors offer an additional 30-35% energy savings and long life cycle to  customers with variable air demand.

Naturally "Green" by design, each  provides high quality air, low dB(A) noise levels, efficient use of energy, and  no oil discharge to the environment. Even service costs are very low with no oil  filters, oil separators or oil to dispose.

ZW 4-Stage Water Purification  System with reverse osmosis membrane & water pump is furnished standard to  remove all contaminants to provide clean, flat water to prevent contamination  buildup on the internal components. Total water filtration, cleaning and  automatic flushing ensure high air quality and long component life  cycles.

Our advanced alphanumeric display  Controller manages the system and monitors temperatures and pressures to protect  your investment and ensure you extract the maximum performance and energy  efficiency from every kilowatt you use. When your application requires clean,  high quality air count on the ZW Series for truly oil-less air.

ZW Compressors are  environmentally safe with high efficiency and are an extension of our current  offering of Oil Less piston compressors. FS oil free compressors serve the  majority of your compressed air needs.

Oil-less Design

System contains no oil, unlike  dry screw compressors.

Water cools, seals and lubricates  the compressor.

Ceramic, water lubricated  bearings for long life and high reliability.

High Efficiency

Water seals the clearances  effectively for low energy consumption (up to 15% less than dry screw) and no  air flow is wasted to seal vent.

As the water absorbs the heat  from the air during compression, the compressor achieves nearly ideal isothermal  compression for optimal efficiency. Direct drive of the air end improves the  efficiency and low energy consumption.

Advanced proprietary profile is  machined to high precision (vs. mold-casted polymer rotors) for high efficiency  and low energy consumption.

Save an additional 30% to 35% of  energy cost with optional Variable Speed Driven ZWV.

Low Cost Service

Oil-less design requires no oil  changes, oil filters, oil separator element changes, or costly disposals of oil  filters and the ZW air end does not require high cost rebuilds like dry screws.  

Oil leaks or discharges into the  environment requiring costly repairs are avoided, and no need for high  maintenance oil-water separation system.

Less down time due to easy and  fast service.

Lower Life Cycle Cost (LLC) with  Variable Speed Driven ZWC compressors.

High Reliability

Low operating speed (3,550 max)  vs. dry screw oil free compressors which can run up to 40,000 rpm. The 3,550 max  rpm means low bearing loads for long bearing life, increasing reliability and  decreasing the risk of down time.

Low operating temperature does  not subject the unit to high heat loads (vs. 500-600 F for dry two-stage oil  free units).

Simple construction with ceramic  bearings gives you high reliability and less risk of down time.  

High Quality Air

Totally oil-less, cool and  contaminant free air.

Water is easy to separate and  remove, unlike oil, which is more difficult to remove.

Water injected to the unit  filtered in several phases and automatically replaces every 100 hours to ensure  cleanliness.

Stainless steel and bronze alloy  non-corroding components with no Teflon or other coating material to wear and  contaminate the air stream.

Capacity

2.3-21.3 m3/min
81-752  cfm

Working Pressure

7-9.5 barg
0.7-0.95  Mpa

Motor size

15-120 kW - 50/60 Hz
20-160 HP  - 50/60 Hz