ZLB pumps are single stage, vertical axial flow pumps, with the liquid flowing in axial direction. The pump is used to transfer clean water or other liquids with similar physical and chemical properties with water. The highest temperature of the transferred liquid can be 50 ℃. The ZLB pump has large capacity and low head, which is widely used in agriculture irrigation, civil supply and drainage, water circulation in industry  power station, dock water level control and other water conservancy projects.