D series pumps are horizontal multistage centrifugal pumps. Other liquids used for conveying water and physical and chemical properties similar to those of water. The temperature of the liquid is not more than 80, and is suitable for the mine drainage and the factory, the city water supply and so on.

DG series pumps are the improved D-type pumps, inlet outlet vertical D-type pumps instead of straight into the straight, the seal parts through to cooling water for boiler feed water or similar hot water conveying, transporting liquid temperature not greater than 105 ℃.