D,DF,DY,MD Horizontal Multi-stage Centrifugal Pump

  This series of horizontal multi- stage centrifugal pump adopted optimized hydraulic model. the pump is efficient ,and durable with low noise ,easy maintenance and wide scope of usages 

This pump is widely used to deliver water without solid particles and suspended matter, or other liquid similarly. It could deliver hot oil, corrosive liquid by changing the material of flow passage parts.

The max. inlet pressure should not exceed 0.6MPa.

Horizontal multi-stage centrifugal pumps can be divided into the following types according to the scope of using: 

D series: Used for transmission of water without solid particles and temperature below 80℃, or similar liquid. 

DF series: Used for transmission of corrosive liquid with temperature range of -20·c – 105℃ and non-solid particles. 

DY series: Used for transmission of non-solid oily liquid and petroleum product with temperature range of -20℃ – 105℃ and viscosity less than 120 cSt. 

MD series: Used for transmission of neutral water from mining well or other similar liquid. The density and size of particles of the sewage should be less than 1.5% and 0.5mm respectively. The temperature range of the -20-80℃  

  For example:D (DF 、 DY、 MD) 450- 60 X 5

• D：Multi-stage for centrifugal pump 
• DF：Corrosion-resistant multi-stage centrifugal pump 
• DY：Multi-stage centrifugal oil pump 
• MD：Wear-resistant multi-stage centrifugal pump 
• 450：Rate flow capacity is 450 m3/h
• 60：Rate delivery head is 60m (single stage) 
•  5：5 stage

D, DF, DY, MD-type pump has the same performance parameters and installation size

Inlet and outlet diameter of the pump: 40 -300mm 

Flow Q = 3.75- 850m3/h 

Head H= 19-816 m

• D, DF, DY, MD series single suction multi-stage centrifugal pump have the structure feature of horizontal inlet and vertical discharge. The segments of suction, middle, discharging are connected by several bolt. 
• The rotor of the pump is mainly composed of shaft and impeller, shaft sleeve and balancing plate. which are balanced and connected to the shaft by straight key and shaft nut. the whole rotor is supported by anti-friction bearing or sliding bearing which varied according to certain situation. the bearing does not sustain any axial force. since the balance disc abandoned. 
• Fluid sealants or O-ring sealing is set between sealing surfaces of segments of inlet, middle, and discharging, while sealing ring and guide vane are set between rotor and stator. The sealing ring and guide vane are advised to be replaced when they decrease the pumping efficiency 
• Mechanical sealing and packing sealing are two options, in which tightness of material shall be filled properly to reach a performance of drop by drop leaking. All sealing parts are integrated in sealing housing which is under pressure of water used for water sealing, cooling and lubricating. A replaceable shaft sleeve is necessary to protect the shaft. 
• The rotor of the pump is allowed to swing during operation axially. This series of pump often integrates with anti-friction bearing and grease lubricating construction. (D 85- 67 and D155-67 models however can adopt sliding bearing and thin oil lubricating structure or anti-friction bearing and grease lubricating structure.) 
• This series of pump is driven directly by motor with flexible coupling. The pump rotates clockwise from view of driven motor