Hydrogen Circulation Pump DQ47


  • Hydrogen circulation pump designed for 45-80 kW fuel cell system
  • Simple and compact structure
  • High efficiency and low power consumption.
  • Hard exhaust characteristics, small flow change.
  • Long service life and competitive price.
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Hydrogen Circulation Pump DQ47 – key features

  • High impeller area utilization coefficient and good dynamic balance.
  • With hard exhaust characteristics of forced air, when the pressure changes, the flow rate changes little.
  • The rotor meshing curve is an advanced compound line, with good sealing, less leakage, and volume efficiency is further increased.
  • Conveying medium does not contain oil.
  • Double row roller bearing, long service life.
  • Cantilever design, low number of parts, and cost controlling well.
  • The pump shell, motor shell, and pump end cover are made of aluminum alloy with a hard anodized surface to improve corrosion resistance.
  • The impeller surface is plastic-coated, with corrosion resistance, wear resistance, small clearance, and high efficiency.
  • Gear surface special treatment, high strength, good wear resistance.
  • The master-slave moving shaft is made of stainless steel whose properties are adjusted by quenching and tempering. It has high hardness and good mechanical properties.

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Dimensions18.9 × 15.6 × 14.7 cm
Max Power (in kW)

Max Ambient Temperature (in °C)

Min Ambient Temperature (in °C)

Max Rotational Speed (in rpm)

Ingress Protection Rating

Max Operating Altitude (in m)

Max Volume Flow (in lpm)

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      Dongde Industrial Co., Ltd is a leading Chinese supplier for the hydrogen energy sector, heavily invested in R&D and a state of the art manufacturing facility for the production of Diaphragm Compressors and Hydrogen Fuel Cell BOP such as Hydrogen Circulation Pumps, Air Compressors for Hydrogen Fuel Cells.
      Dongde has more than 300 Chinese patents, thanks to the crew of engineers with 5 holding doctorate degrees, who have been working very closely with global leading players in the hydrogen energy sector.

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