It indicates that the pump has strong suction power
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What does the suction power of a pump depend on: flow rate, head, or power?
It’s all related; the vacuum level inside the volute is low
Do you mean the suction height by suction force? Take a look at the chemical process design manual. It is also related to the medium.
The suction force you mentioned refers to the suction head of the pump. The total head of a pump is divided into suction head and discharge head.
It is related to the structure of the pump itself, the density of the medium, and the conditions of the installation on site