Can water lubricated compressors use softened water?

About Granklin water lubricated screw air compressor applicable water quality description

grantklin water-lubricated screw air compressor adopts a compression structure of single screw meshing with star wheel, and uses pure water as lubricating and sealing medium to realize oil-free compression. In response to the user's consultation on the application of softened water, combined with the technical characteristics and operating requirements of the equipment, it is officially stated as follows:

1. demineralized water as working medium feasibility

granklin water-lubricated screw air compressors support the use of demineralized water as the working medium. Softened water can effectively reduce the risk of scale deposition by removing calcium, magnesium and other mineral ions, which is of positive significance to the long-term stable operation of the equipment. Its applicability is mainly reflected in the following aspects:

1. Material compatibility
   The core components of the equipment (screw, star wheel, seal, etc.) are made of corrosion-resistant stainless steel and composite materials, which will not cause electrochemical corrosion or material deterioration when contacting with demineralized water, thus ensuring the service life of the equipment.

2. Lubrication and sealing performance
   The softened water can still form a stable water film to meet the lubrication requirements of the single screw and the star wheel meshing surface, while maintaining the sealing of the compression cavity to ensure compression efficiency.

3. System protection
   of softened water can reduce the adhesion of scale in pipes and cooling systems, and reduce the risk of failure such as increased thermal resistance and pipeline blockage caused by scaling.

2. Water Quality Requirements and Precautions

in order to ensure the performance of the equipment, the following conditions shall be met when using demineralized water:

1. Conductivity control
   It is recommended that the conductivity of softened water be ≤ 500 μS/cm to avoid pitting or electrochemical corrosion on the surface of components due to high ion concentration.

2. pH range
   The pH of the water should be maintained between 6.5 and 8.5, deviation from this range may accelerate the corrosion of metal parts or affect the stability of the water film.

3. Microbial control
   water softening systems need to be regularly disinfected to prevent the growth of bacteria or algae and to avoid biofilm clogging the filtration unit or contaminating the compressed air.

4. during the operation of supplementary water management
   , water quality shall be continuously monitored. If evaporation leads to mineral concentration, fresh softened water shall be replenished in time to maintain stable water quality.

   1. of

      3. Softened Water Application Comprehensive Advantages

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   Extending equipment life
   and reducing scale deposition can reduce screw and star wheel wear and extend the main engine overhaul cycle.

5. Improve operating efficiency
   A clean waterway system optimizes heat exchange efficiency and reduces energy consumption.

6. Simplifying the maintenance process
   can reduce the frequency of pipeline cleaning and reduce maintenance costs.

   4. Conclusion

granklin water-lubricated screw air compressors can safely use demineralized water as the working medium. Users need to strictly follow the water quality management standards, and regularly detect the conductivity, pH value and microbial indicators to ensure that the equipment is always in the best operating state. For further technical guidance, contact the Granklin after-sales service team.