Edwards nXDS6iR Dry Scroll Vacuum Pump, No Gas Ballast; 4 CFM from Cole-Parmer

NGB pumps are standard Edwards nXDS6 pumps but with the gas ballast feature removed. They are for applications where it is advantageous to have the gas ballast control knob and machining removed so that it cannot be accidentally opened. Example applications for Edwards nxds 6 include rare gas recirculation and gas recovery. Lubricant-free within the vacuum envelope and hermetically sealed means totally clean and dry vacuum to prevent cross contamination No atmosphere to vacuum shaft seals means bearing are completely isolated, which prevents process attack and means the bearings run cooler and last longer Simple single sided scroll arrangement combined with an innovative motor and bearing design allows for easy field service with a minimum of speacieal tooling for low cost of ownership and maximum up-time No oil changes required eliminating costs of contaminated oil disposal No gas ballast to eliminate accidental opening and resultant ingress of air