What is difference between inducer and diffuser in a pump?

Inducer in pump used to reduce the NET POSITIVE SUCTION HEAD Required (NPSHr). NPSHa should be more than NPSHr. NPSHr depends upon pump design and NPSHa depends upon Head in application. If NPSHr is more than NPSHa, We can reduce the same by fixing inducer in front of impeller.

Diffuser used to increase the pressure. Diffuser is the static part around the impeller. It decreases the velocity of fluid which rotates by impeller and increases performance.

MANIKANDAN

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