Heavy duty submersible pump is designed to work especially in burdensome conditions where generally normal pumps cannot operate. The agitator is fixed on the main shaft of this pump. Agitator enables this pump to rise and convey liquids and mixtures with medium-high specific weight such as mud, slimes, silts, sand and gravel. Heavy-duty submersible pumps with agitator are available either in hydraulic or in electric version.