KSB Centrifugal Pump Lexicon –

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Stable H/Q curve

A centrifugal pump's H/Q curve is called stable if it exhibits a continuously negative slope (negative differential quotient from head and flow rate) with regard to the Q axis. See Fig. 1 Stable H/Q curve

Fig. 1 Stable H/Q curve: Examples of 4 H/Q curves 1 and 2 stable, 3 and 4 unstable

Fig. 1 Stable H/Q curve: Examples of 4 H/Q curves 1 and 2 stable, 3 and 4 unstable


  

  

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