Spinning disc in a centrifugal pump with protruding vanes used to accelerate the fluid in the pump casing.

Source: API RP 13C, Recommended Practice on Drilling Fluids Processing Systems Evaluation, Upstream Segment, Fourth Edition, December 2010. Global Standards



Rotating part of a centrifugal compressor/pump that imparts kinetic energy to a fluid.

Source: IADC UBO / MPD Glossary, December 2011. Global Standards

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