Over 48 Years of Experience in the Vacuum Pump Business

A-VAC is proud to offer the Highest Quality Vacuum Pumps and Blowers by renowned companies including Welch Gardner Denver, Alcatel Adixen Pfeiffer, Leybold, Edwards, Anest, Stokes, and Agilent.


Vacuum Chamber System - 10

Vacuum Chamber System - 10" X 17" Stainless Chamber

Leybold Vacuum Blower WS501 312 cfm REBUILT W/ 1 Year Warranty

Leybold Vacuum Blower WS501 312 cfm REBUILT W/ 1 Year Warranty

WELCH 2025 Self-Cleaning Dry Chemical Resistant vacuum pump 1.2 CFM 40.44193.02

In stock

Welch Scientific builds some of the best vacuum pumps in the world. Their dry, Self-Cleaning systems achieve vacuum levels better than 9 torr and 1.2 CFM air flow. .

Feature include front-panel adjustable vacuum level control, gas ballast on/of switch and automatic purge upon shutdown.

Due to the oil-free design, these pumps are great for applications where vacuum pump exhaust odor is a problem, such as:

  • Essential Oil extraction
  • Vacuum Ovens
  • BHO
  • Electron Microscopes
  • Residual Gas Analyzers
  • Rotary Evaporators, AKA RotoVaps that strip ethanol off of Oils dissolved in Ethanol
  • Filtration of volatiles
  • Purging and short path distillation
More Information
New / Rebuilt Selection Rebuilt
Level of Vacuum ROUGH VACUUM to 29 Inches (760 – 1 Torr)
Manufacturer Welch
Motor / Voltage 120v
Inlet / Exhaust 1/4" hose barb
CFM / L/M (Displacement) 1.24 CFM
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