FY series submerged pumps are new type pumps optimally designed on the basis of conventional corrosion resisting submerged pumps and with the advanced technology of the like products from Switzerland Sulzer. This pump abolished the use of mechanical seal that i$ generally accepted by other submerged pumps, and has utilized distinctively structured impeller to feature high efficiency, energy conservation, no leakage, and long service life, They are widely used in the industries of petroleum, chemical, pharmaceuticals,papermaking, metallurgy, sewage treatment, etc.