Sewage pumps are used in sanitary pumping applications when toilets are being used. These pumps are capable of passing 2" solids. As with effluent pumps, sewage pump basins must be gas tight and vented according to code.
Typically, sewage pumps have two types of impellers, deep vane and vortex.
A deep vane impeller paddles the liquid and solids. Pumps with these impellers can produce a greater gallon per minute output.
A vortex impeller is located at the top of the volute (base of the pump), as it spins it creates a velocity that transfers the liquids and solids. In theory, the vortex impeller is a better selection than a deep vane impeller because the solids are less likely to come in contact with the impeller.
Note: Sewage pumps can also be used for sump pump and effluent pump applications where higher pump output is required or to handle debris entering the basin from loading docks for example.