Impeller is a rotor, rotating component of a centrifugal pump. Front and rear shrouds have pump out vanes that reduce recirculation and seal contamination. Hard metal and molded elastomer impellers are completely interchangeable. Cast in impeller threads require no inserts or nuts. High efficiency and high head designs are also available. It increa ...
http://http://www.sunbopump.com/Metal-Parts/Slurry-Pump-Metal-Impeller-Wear-Parts-135.html