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Home/Rebuilt Vacuum Pumps/Rotary Vane/Pfeiffer Vacuum Pumps/Pfeiffer Duo 125 Vacuum Pump

Pfeiffer Duo 125 Vacuum Pump

Pfeiffer Duo 125 Rotary Vane Vacuum Pump

The Pfeiffer Duo 125 vacuum pump is a dual-stage high-performance rotary vane pump with a pumping speed of 115 m3/h at 50 Hz and 135 m3/h at 60 Hz. The Duo 125 pump has an integrated gas ballast and HV safety valve.

The Duo 125 rotary vane pump is a rotary vane vacuum pump used primarily for all low and medium vacuum applications. It’s quiet, compact and well suited for a wide range of bench top applications. A temperature sensor (3TF) provides optimum motor protection.

REBUILT OR REMANUFACTURED PFEIFFER DUO 125 VACUUM PUMPS:

All rebuild prices include disassembly, inspection & cleaning. Replacement of seals, gasket, springs, o-rings & valves. Other parts replaced as required upon approval for an extra charge. Pumps are then tested & painted.

Specifications

PFEIFFER DUO 125 VACUUM PUMP SPECIFICATIONS:

Vacuum Pump ModelDUO 125
Nominal Displacementcfm79.46
Nominal Displacementl/m2,250
Stage2
Phase (Typical)3
Rated Power 60 HzkW4.5
Oil Capacityltr14
Flange (in)DN63 ISO-F
Flange (out)DN63 ISO-F
Weightlbs496.04
Noise LeveldBA75
Purchase Price  (Rebuilt)$–
Rebuild Price$–

Features

PFEIFFER DUO 125 DUAL STAGE PUMP FEATURES:

  • Dual-stage vacuum pump
  • 3-phase motor
  • Integrated gas ballast with HV safety valve
  • With temperature sensor for optimum motor protection
  • For low and medium vacuum applications
  • Rugged design for industrial applications
  • 67.69 cfm pumping speed at 50 HZ
  • 79.46 cfm pumping speed at 60 HZ
  • Ultimate pressure 4 x 10-3 mbar
Applications

PFEIFFER DUO 125 VACUUM PUMP APPLICATIONS:

  • Industrial Applications
  • Backing pump for turbopumps and roots pumps
  • Freeze drying
  • Process engineering
  • General laboratory use
Dimensions

PFEIFFER DUO 125 DIMENSIONS:

Pfeiffer Duo 35 vacuum pump dimensions
Dimensional Drawings Pfeiffer Duo 125

Pumping Speed Curves

PFEIFFER DUO 125 PUMPING SPEED CURVES :

Pfeiffer Duo 125 Rotary Vane Pumping Speed Curves
Pumping Speed Curve Pfeiffer Duo 125

Compare

Pfeiffer Duo 35 to 255 Rotary Vane Pump Specifications

Pump ModelDuo 35Duo 65Duo 125Duo 255
Flange (in)DN 40 ISO-KFDN 40 ISO-KFDN 63 ISO-KFDN 100 ISO-F
Flange (out)DN 40 ISO-KFDN 40 ISO-KFDN 63 ISO-KFDN 100 ISO-F
Pumping Speed l/m (cfm)60 Hz600 l/m (21.19 cfm)1166.67 l/m (41.2 cfm)2250 l/m (79.46 cfm)5000 l/m (176.58 cfm)
Pumping speed l/m (cfm)50 Hz533.33 l/m (18.84 cfm)1033.33 l/m (36.49 cfm)1916.67 l/m (67.69 cfm)4166.67 l/m (147.15 cfm)
Ultimate Pressure
with Gas Ballast
mbar3 x 10-33 x 10-34 x 10-34 x 10-3
Ultimate Pressure
without Gas Ballast
mbar2 x 10-32 x 10-32 x 10-33 x 10-3
Operating fluidP3P3P3P3
Operating fluid fillingliters3.24.21425
Dimensionsmillimeters645 x 240 x 340728 x 240 x 3401166 x 396 x 5261407 x 478 x 741
Weightlbs149.91165.34496.04793.66
Motor Protection3TFPTC3TF3TF
Motor version3-phase3-phase3-phase3-phase
Rotation speed 50 Hzrpm1,5001,5001,0001,000
Rotation speed 60 Hzrpm1,8001,8001,2001,200
Rated power 50 HzkW1.11.547.5
Rated power 60 HzkW1.31.84.59
Noise at 50 HzdBA61617575
Manual

Pfeiffer Duo 125 User Manual

Pfeiffer Duo 125 Datasheet

Learn more about HVS leak testing services and helium leak detector rentals.

Pfeiffer Vacuum Duo Series Rotary Vane Pumps

  • Pfeiffer Duo 1.6 Vacuum Pump

    Pfeiffer Duo 1.6 Rotary Vane Vacuum Pump
  • Pfeiffer Duo 3 Vacuum Pump

    Pfeiffer Duo 3 Rotary Vane Vacuum Pump
  • Pfeiffer Duo 6 Vacuum Pump

    Pfeiffer Duo 6 Rotary Vane Vacuum Pump
  • Pfeiffer Duo 11 Vacuum Pump

    Pfeiffer Duo 11 Rotary Vane Vacuum Pump
  • Pfeiffer Duo 35 Vacuum Pump

    Pfeiffer Duo Rotary Vane Vacuum Pump
  • Pfeiffer Duo 65 Vacuum Pump

    Pfeiffer Duo 65 Rotary Vane Vacuum Pump
  • Pfeiffer Duo 255 Vacuum Pump

    Pfeiffer Duo 255 Rotary Vane Vacuum Pump

Additional Products and Services

Learn more about our leak testing services and helium leak detector rentals:

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Categories: Pfeiffer Vacuum PumpsTags: Dual-Stage Pump, Rugged Design

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