SUCTION SPECIFIC SPEED (S)

Suction Specific Speed (S) like Impeller Specific Speed (Ns) is a parameter, or index of hydraulic design describing the suction capabilities and characteristics of a given first stage impeller.

Input values for Flow and NPSHR that correspond to the the pump performance at optimum (or best) efficiency point. In this example, calculate the suction specific speed in either Metric or US units.

Flow Rate 

NPSHR 

Speed

Specific Speed

(RPM)

Hydraulic Power
Specific Impeller Speed
Specific Suction Speed
Affinity Correction
Tip Speed