... power, mining,metallurgy, coal, building materials, chemicals, food,water and sewage treatment industries, Containing solid particles is used to ... dilute oil lubrication2.Cylinder with grease lubrication3.Bearing box ,Embedded cover-type with thin oil or grease lubricationType of shaft ... stage pump and above the pumpYou need to use water sealImpeller Type:3.double shrouded wheel: Impeller in the form ...