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Pfeiffer DUO 35M Rotary Vane Vacuum Pump Dual Stage DUO 35M 21 CFM NEW PKD45028 3PH

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SKU: 40.00008.01

Additional information

Weight 70 lbs
New / Rebuilt

Level of Vacuum

CFM / L/M (Displacement)

Inlet / Exhaust


Power Options



Alcatel Pfeiffer rotary vane vacuum pumps address the requirements of all major vacuum applications in diverse industries. Available in five different series, these pumps are dedicated to specific applications, with most models available in universal single phase or three phase. Most intriguing is the ingenious magnetic coupling, which eliminates the possibility of shaft seal leaks, always the Achilles heel on vacuum pumps.


  • Compact design
  • Broad Range of Pumping Speeds
  • Designs for Specific Applications
  • Low Noise Levels
  • Universal Motor
  • Gas Ballast

Different fluids, such as PFPE fluids, corrosive configurations, and motor voltages are available. Please call for details.

Where indicated by price, most models are available new or completely remanufactured, covered with a full one year warranty.

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Pfeiffer Dual Stage Rotary Vane Vacuum Pump DUO 35M 21 CFM NEW PKD45028 3PH Specifications

Ambient temperature12-40 °C
Cooling method, standardAir
Emission sound pressure level without gas ballast at 50 Hz<= 61 dB (A)
Exhaust pressure, max.1500 hPa
Exhaust pressure, min.250 hPa
Flange (in)DN 40 ISO-KF
Flange (out)DN 40 ISO-KF
Leak rate magnetic coupling<= 1·10-7  Pa m3/s
Leak rate safety valve<= 1·10-5  Pa m3/s
Magnetic couplingyes
Mains requirement: voltage 50 Hz230/400(± 5%) V
Mains requirement: voltage 60 Hz265/460(± 5%) V
Motor protection3TF
Operating fluid filling3.2 l
Protection categoryIP 55
Pumping speed at 50 Hz32 m3/h
Pumping speed at 60 Hz36 m3/h
Rated power 50 Hz1.1 kW
Rated power 60 Hz1.3 kW
Rotation speed at 50 Hz1500 min-1
Rotation speed at 60 Hz1800 min-1
Ultimate pressure with gas ballast<= 3·10-3  hPa
Ultimate pressure without gas ballast<= 2·10-3  hPa
Weight70 kg

Click Below for Specification Sheet

DUO 35M Series