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离心泵在正常运转过程中往往会产生泵管压差或服务压力高于实际所需压力而浪费能量。对离心泵实施调速是减少能量损失的有效途经。离心泵的运行控制分手动和自动控制，调速分定压调速和变压调速，离心泵利用调速节能应根据使用实际情况选择调速方式。若是多台泵同时运转的系统，采用定压调速时只需对其中一台泵调速即可；而采用变压调速时则必须对系统中的所有泵都调速。调速运转泵的能耗与泵压、流量和相应的效率相关，利用等效率曲线可获得不同状态的运转效率。
Centrifugal pumps in the normal operation of the pump will often have pressure or service pressure is higher than the actual pressure required to waste energy. Speed control of centrifugal pumps is an effective way to reduce energy loss. Centrifugal pump operation control sub-manual and automatic control, speed sub-fixed pressure speed and variable speed, centrifugal pump speed control should be based on the actual use of speed control mode. If more than one pump at the same time running the system, the use of constant pressure speed control when only one of the pump speed can be; and when using variable speed control system must have all the pump speed. Speed governing pump energy consumption and pump pressure, flow and the corresponding efficiency, the use of equal efficiency curve can be obtained in different states of the operating efficiency.