Differences Between Positive Displacement Pumps and Dynamic Pumps-Hebei Rongyu Pump Industry Co., Ltd.

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Differences Between Positive Displacement Pumps and Dynamic Pumps

Mar 19,2026

Summary: Pumps are mainly classified into two categories based on their working principle: Positive Displacement Pumps and Dynamic (or Kinetic) Pumps.

Differences Between Positive Displacement Pumps and Dynamic Pumps

Pumps are mainly classified into two categories based on their working principle: Positive Displacement Pumps and Dynamic (or Kinetic) Pumps. Positive Displacement Pumps (e.g., screw pumps, gear pumps) convey liquid by changing the volume of sealed chambers; flow rate is proportional to speed, making them suitable for high-pressure, high-viscosity media. Dynamic Pumps (e.g., centrifugal pumps) convey liquid through the dynamic action between blades and the liquid; head is related to flow rate, making them suitable for high-flow, low-viscosity media. Pump selection requires comprehensive consideration based on media characteristics and process parameters.

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