Open Pump Impellers

What is an Open Impeller?

Open Impellers have vanes that are open on both sides without any protective shrouds that are attached to a center hub and are directly mounted to a shaft. There is no wall surrounding the vanes, which makes them faster and easier to clean or repair.

Open Impellers tend to be used in smaller pumps, handling liquids, abrasive liquids, or suspended solids. Due to their structure, open impellers operate optimally under reduced levels of strain. While they can handle a degree of solid content, unlike closed impellers, they require a higher Net Positive Suction Head (NPSH) to operate without damage and loss of efficiency.

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Open Impeller

Application & Industries

Open impellers are used in a wide variety of industries. They are typically easier to service, clean, and repair. These impellers are utilized in pumps serving a wide range of applications for multiple industries:

  • Petro-Chemical
  • Mining & Mineral
  • Chemical processing
  • Oil & Gas
  • Pulp & Paper
  • Food processing


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