FL series pump is the cantilever, horizontal centrifugal slurry pump, applicable to the metallurgical, mining, coal, building materials and other industrial departments delivering low abrasion, low concentration of slurry. This type of pump shaft sealing adopts the packing seal and sealing the two types of centrifugal. This type of pump used in high speed operation, thereby has the advantages of small volume, saving occupied area. A pump body having a replaceable wear-resistant metal lining or rubber lining, the impeller adopts wear-resistant metal or rubber material.