What is closed impeller?

Closed impellers have a back and front wall around the vanes or the Blades, to increase strength. Closed Impeller are used primarily in larger Centrifugal pumps. we use Low pressure investment casting to develop the impeller

Low pressure Casting Closed Impeller

Semi-Closed Impeller

Semi-Closed impellers have a back wall that adds strength to the impeller.  Semi-closed impellers are usually used with liquids or products that have solids. Reduced efficiency is a common problem with semi-closed impellers, but the ability to pass solids is an important trade-off.

Open Semi-closed Turbo Impeller

we use vacuum permanent mold casting and ceramic core to make the closed impeller for our branded centrifugal pump cutomers.