... noise, easy maintenance and other salient features.Applicable to electric power, mining,metallurgy, coal, building materials, chemicals, food ... lubrication2.Cylinder with grease lubrication3.Bearing box ,Embedded cover-type with thin oil or grease lubricationType of shaft sealing ... - Corrosion-resistant performance is good Pump efficiency.4.open impeller: Over-current capacity of large impeller, In ...