Selecting Centrifugal Pumps - KSB
Hz geo m Vertical distance between pump reference plane and water level for positive inlet pressure operation HL m Head loss H0 m Shutoff head (at Q = 0) I A Electric current (amperage) K Dimensionless specific speed, type number k mm, µm Mean absolute roughness k Conversion factors kQ, kH, kη (HI method)
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