50AFU21.5F-230v heavy duty submersible sewage pump Applications for this pump. Drainage of waste water from the attenuation tank, purifying tank and sewage tank in water treatment plant. Drainage of waste water containing fibrous additives from leather factory, dyeing factory and food processing factory. Sewage management, accumulated water, septic tank, stock farm. Pumping sewage from hotels, restaurants, schools and public buildings.