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Affinity Laws - Total Head & Diameter

Speed Held Constant

H1     D1    
  • H1 = Total Head in Feet, for a known condition or scenario
  • H2 = Total Head in Feet, for a desired condition or scenario (estimated performance)
  • D1 = Impeller diameter, for a known condition or scenario
  • D2 = Impeller diameter, for a desired condition or scenario (estimated performance)
 =   


H2     D2    
           
 
           

 

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