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 increase or decrease the pressure and flow of fluid.When the slurry pump processing the solid mixture, the most worn parts are impellers. Impeller is the most important part of a pump. It is heart of a Slury Pump. Materials are SA05, SA49, SA33, Natural Rubber, Polyurethane...etc, to meet different working duty.