Specification :

Product Description

Type D DG DY DF DM multistage Pump is single-suction, multi-stage, segmental centrifugal pump. Type D It is provided for delivering clear water without solid particles or other liquid which is physically and chemically similar to clear water.

The temperature of the liquid is -20 deg C ~ 80 deg C

Type DG is specially designed for new series of industrial steam boiler. It is not only used for feed water of low-middle boiler but also suitable for pumping high lift water. The temperature of the liquid is -20 deg C ~ 400 deg C.

Type DY is used to transfer non-corrosive oil and oil products without solid particles and with viscosity less than 120 centistokes. The temperature of the liquid Is -20 deg C~ 150deg C

Type DF is used to transfer corrosive liquid without solid particles, The temperature of the liquid is --20~ + 150 deg C.

Type DM is used to transfer clear water or liquid which is physically and chemically similar to clear water with limited solid particles Performance range

Capacity
Q: 6 ~ 500m3/ h
Head H: 33 ~ 960m

Construction:
Type D DG, DY DF DM pumps are horizontally installation. The direction of inlet and outlet of Type DG, DY DF is vertical upward except type D pump with horizontal inlet. Type DY1 2 3DF can be also with horizontal inlet and outlet.

The axial thrust gets balanced with the help of balance disk. Type D, DG, DY, DF3_40 pumps get the balanced with the help of Symmetrically construction the shaft seal usually uses packing seal, according to customers' requirements, mechanical seal is used, too. Type Df85_67pumps use sliding bearings which get lubricated with dilute--oil.

The others use rolling bearings which get lubricated with grease except type DF155-67 pump with dilute oil. Materials of tolerance parts: Type D, DG pump are made of cast iron, the shaft is 45# steel.

Type DY: The materials are divided into three types:
1_cast iron( the temperature in operation is 20--150 deg C)
2_cast steel ( the temperature in operation is 45--400 deg C)
3_stainless steel ( the temperature in operation is 45--400 deg C)

Type DF: According to the liquid can be divided into cast steel and stainless steel.

Type DM: Anti-friction cast iron