The flexible sheet pump relies on the eccentric motion generated between the rotating rotor and the fixed ring to move the fluid between the suction port and the discharge port. However, instead of slots and rigid vanes, flexible vane pumps use vanes that are molded from a flexible material that deforms when the rotor forms a circuit. This creates a cavity that expands on the suction side and collapses on the discharge side. This design is very useful for moving fluids containing particles or solids, because there is no internal gap where these particles may exist. The impeller is made of various rubber compounds including EPDM and silicone, which is compatible with a variety of products

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