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Function: The expeller and expeller rings work together to reduce the pressure and minimize leakage from the pump.

Materials: Liners are often made from high-chrome alloys, rubber, or other wear-resistant materials.

Function: Seals prevent slurry from leaking out of the pump and protect the internal components.

The Role of the Volute in Centrifugal Pumps

Another critical factor in impeller design is the material used for construction. Sewage pump impellers can be made from various materials, including cast iron, stainless steel, or thermoplastics. The choice of material depends on the chemical composition of the waste being pumped. For example, stainless steel impellers offer excellent corrosion resistance, making them suitable for applications involving harsh chemicals.

Maintenance of sewage pump impellers is also vital for ensuring their longevity and functionality. Regular inspection can help identify wear or damage, and timely replacement of worn-out impellers can prevent pump failures and costly repairs. Moreover, keeping the impeller clean from debris buildup ensures optimal performance.

   - Decide between direct drive, belt drive, or variable speed drive based on your application needs.

b. Selection Software: