Hydrodynamic Screws can be used in many applications: 
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- Replacement of small turbines which require reconditioning; 
 - Replacement of damaged water-wheels; 
 - Clean water discharge in waste water treatment plants; 
 - Surplus water utilization in existing channels or weirs;
 - Utilization of water power in long-term unused channels;
 - Utlization of cooling water from electric power plants;
 - Utilization of processing waste water (from paper mills, mills etc.).
 
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This is really nice. This is how bearings should be shown in a picture. With lots of info with it.
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