Pumps are destined for pumping polluted wastewater, faeces and sludge with the total portion of non-abrasive sludge dry residues max. 10 percent by weigh, with a content of fine fragmented materials, as paper, street washoffs, or a smaller amount of loam, ash, sand, and so on. Thanks to its parameters and design this pump can be used to advantage in one-family houses and weekend houses, gardens, and so on.