Welch CRVpro - Vacuum Pumps

SKU CRVpro Categories , ,




The new CRVpro family of direct drive vacuum pumps offers increased reliability and longer service interval vs. other direct drive rotary vane vacuum pumps. The CRVpro family consumes up to 36% less oil than comparable pumps. Three features drive these benefits:

  • Runs 10°C cooler than comparable pumps. Slows corrosion.
  • Has a 40% larger oil capacity than comparable pumps. Dilutes aggressive chemicals.
  • Has a chemical resistant coating in the oil case and pump module. Protects non-moving parts.

The CRVpro family includes all the features you’d expect in a direct drive rotary vane pump: gas ballast, forced oil lubrication, anti-suckback mechanism and thermal overload protection.

CRVpro vacuum pumps can be used for freeze drying, vacuum ovens, concentrators, glove boxes, schlenk lines, coaters, backing diffusion pumps and turbo molecular pumps, short path, wiped film, lab vacuum furnaces, lamp manufacture, space simulation, degassing, vessel/chamber evacuation. CRVpro vacuum pumps prepared with perfluoropolyether(PFPE) for oxygen service are available. Pumps with explosion proof motors are available, (click the “back to product list” link at top of page). Contact your local Welch sales representative for details on PFPE prepared pumps and for selecting correct vacuum pump for your application.



Welch provides state-of-the-art vacuum pumps for numerous applications in chemical and biological laboratories, as well as for high vacuum manufacturing, air-conditioning and refrigeration.

Additional information


CRVpro4 2.8 CFM 120V, CRVpro6 4.2 CFM 120V, CRVpro8 5.6 CFM 120V, CRVpro16 11.6 CFM 120V, CRVpro30 22.1 CFM 120V, CRVpro30 22.1 CFM 240V, CRVpro48 34 CFM 240V 3 PH, CRVpro65 46 CFM 240V 3PH