... with rust, corrosion, pollution, etc QW-type submersible sewage pump - mobile elbow installation of specially designed open-flow impeller ... the more advanced and drainage equipment. The next cyclone pump suction structure, with fear clogging, abrasion, reliable operation, ... including those containing pulp, wood titanite, starch, silt, gravel, short fiber slurry, solid manure and urine are also liquid ...