Across International Welch 2.8 cfm 78 L/min CRVpro 4 Direct Drive Rotary Vane Pump 3041-01

Power Lab Supply 2SKU: CRVPro4
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Sale price$3,250.56 USD

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.


CRVpro 2,4,6,8 are switch selectable between 115V/60Hz and 230V 50/60 Hz operation. Motors include overload protection. 115V pumps are cUL rated. 230V pumps are CE rated. Always use a certified electrician for proper installation of pumps with three phase motors.



  • Consumes up to 36% less oil than comparable pumps.
  • 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.
  • Available in 230V 50/60Hz.
  • Free air displacement @60Hz: 1.8 cfm (50 L/min)
  • Free air displacement @50 Hz: 2.5 m3/h (42 L/min)
  • Ultimate Pressure: 3x10-3 mbar (2x10-3 Torr)





Ultimate Pressure

Inlet Connection NW16

Gas Ballast


Oil Capacity, L


Dimensions, LxWxH, in (mm)

Exhaust Connection NW16
Free Air Displacement 2.8 (78)
Agency (National Recognized Lab) cUL

Weight (lbs)



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