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Sewage pumps transport sewage and untreated waste water (e.g. raw waste water). They are most commonly used in municipal waste water treatment plants but also in buildings and private homes, which cannot be connected to the municipal sewer due to the natural slope of the terrain.
Pumps for dry installation with single-vane impeller
Submersible motor pumps (vertical installation) with single-vane impeller
Close-coupled pumps (ready-to-connect package systems)
Torque flow pumps with free-flow impeller
Pumps with diagonal impeller
The requirements for sewage lifting units are identical with those for waste water pumps. Clogging, for example, must also be prevented in sewage lifting units, even if solids contents are high. This is why they are fitted with special impellers such as single-vane or diagonal impellers.
The axial thrust is balanced by back vanes. Single or double mechanical seals are used as a shaft seal. Sewage lifting units are usually not self-priming.
To prevent wear sewage lifting units are designed with replaceable wear-resistant components (e.g. casing wear ring, wear plate, impeller wear ring), depending on the solids content.
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