Pump Suction Specific Speed calculator

The suction specific speed is used to choose the pumps of maximum efficiency which is calculated based on the shaft rotational speed, flow rate capacity and positive suction head.

Calculate Suction Specific Speed of Pump

rpm
m3/s
length

The suction specific speed is used to choose the pumps of maximum efficiency which is calculated based on the shaft rotational speed, flow rate capacity and positive suction head.

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Formula:

Nss= ω * q1/2 / NPSHr3/4 Where, Nss = Suction Specific Speed ω = Pump Shaft Rotational Speed q = Flow Rate Capacity NPSHr = Required Net Positive Suction Head for the Pump at best Efficiency Point

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