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3. Molding and Fabrication Once the design is finalized, the next step is molding. For rubber and silicone boots, the material is heated and placed into molds, where it takes shape. Metal components may be fabricated through stamping or extrusion processes, where sheets of metal are cut and shaped into the desired design.
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There are several types of impellers used in sewage pumps, each with distinct features catering to various types of sewage applications. The most common types include open, semi-open, and enclosed impellers. Open impellers have no front shroud, allowing for larger solids to pass through without clogging. This makes them ideal for handling raw sewage containing debris. Semi-open and enclosed impellers, on the other hand, are more suitable for cleaner liquids, offering better efficiency and pressure generation.
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