FY series pump is vertical corrosive submerged centrifugal pump with long shaft. The mark, rated performance and connecting flange size are designed by the international standard ISO2858. Its technical conditions are designed by the standard ISO5199. The new type FY pump has the advantages of small volume, high efficiency, good energy-saving effect, high reliability and so on. It is suitable for transporting corrosive medium with little solid particles and abrasive materials.