DWGM-45L Corrosion Resistant Diaphragm Vacuum Pump

DWGM-45L is a variable-speed, four-stage corrosion-resistant diaphragm vacuum pump designed for reduced-pressure laboratory processes involving corrosive gases and organic solvent vapors. A frequency-controlled DC motor drives the diaphragm system, while the air chamber and vacuum path are made of PTFE for chemical resistance. With its highly integrated design, the pump occupies less than 6 square decimeters, significantly improving space utilization efficiency.

  • 45 L/min Pumping Speed
  • 2 mbar Ultimate Vacuum
  • Four-Stage Pump Chamber
  • 285–1200 rpm Variable Speed
  • PTFE Air Chamber & Vacuum Path

Features of DWGM-45L

  • All adopt international advanced brand of imported bearings, stable operation, small vibration, low noise < 50 decibels.
  • With overheat protection function, it can run at full load for 24 hours, with low temperature rise and large torque.
  • High vacuum precision design and manufacturing greatly improve the efficiency of laboratory work.


Variable Speed Vacuum Operation

Applications of DWGM-45L

  • Rotary Evaporation: Vacuum support for solvent mixtures, extracts and concentrated solutions during rotary evaporation.
  • Vacuum Concentration: Provides vacuum for reaction solutions, solvent extracts and purified fractions during reduced-pressure concentration.
  • Vacuum Filtration: Vacuum source for suspensions, precipitates and liquid samples using compatible filtration systems.
  • Corrosive Vapor Processes: PTFE vacuum path supports compatible processes involving acidic, alkaline or organic solvent vapors, subject to medium compatibility.
  • Laboratory Vacuum Processes: Suitable as a vacuum source for compatible reduced-pressure synthesis, evaporation and sample-preparation workflows.
Applications of Circulating Water Vacuum Pump

When to Choose DWGM-45L

Choose DWGM-45L when your process requires:

  • 2 mbar deeper vacuum
  • 45 L/min pumping speed
  • Variable-speed operation
  • PTFE gas-contact path
  • Organic solvent / corrosive vapor resistance
  • Extended full-load operation

FAQ

The specified ultimate vacuum is 2 mbar.

The specified pumping speed is 45 L/min.

Yes. The speed range is 285–1200 rpm.

The brochure states that the air chamber and air path are made of PTFE.

The brochure specifically states that the PTFE gas path provides organic solvent resistance.

The brochure specifies up to 24 hours of full-load operation with overheat protection.

The specified noise level is approximately 50 dB or below.

Yes. Rotary evaporators are explicitly listed as compatible equipment.

Specifications of DWGM-45L

ModelDWGM-45L 
Speed of air extraction45L/min
Ultimate vacuum2mbar
Noise at low pressure50 dB
Vacuum chamberClass 4
Input pressure 2-1030 mbar
Range of velocities285-1200 rpm
MaterialThe air chamber and air path are all made of polytetrafluoroethylene (PTFE) material, which has strong chemical corrosion resistance and organic solvent resistance.
Instrument size150*375*370mm
Weight10kg

Why Choose Us?

One-Station Shopping

“Multiple suppliers” have always been an issue in the procurement process. Drawell as a one-stop laboratory equipment and scientific instruments supplier, can perfectly solve this problem.

Customer-centric Services

User Training – Training by Drawell skilled engineers about installation, debug tests, technical services, etc. It can happen in our factory in China, or at the site in the customers’ country.

Online Support

To discuss the problem and get it resolved, online chats, real-time video calls, and remote guidance. For the after-sales stage, our online technical guidance is free and ready forever.

100% Quality Guarantee

1-year free warranty includes repairing damaged parts and replacing selected ones (shipping extra). 5% is charged to extend it before it expires.

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