D - Series Double Stage Liquid Ring Vacuum Pump Compare All D-Series D-32-45 Vacuum: 29"HgCFM: 30HP: 3RPM: 3600 SpecificationsGraphDimensions D-40-60 Vacuum: 29"HgCFM: 40HP: 5RPM: 1750 SpecificationsGraphDimensions D-40-110 Vacuum: 29"HgCFM: 75HP: 7.5RPM: 1750 SpecificationsGraphDimensions D-50-280 Vacuum: 29"HgCFM: 190HP: 15RPM: 1750 SpecificationsGraphDimensions D-50-340 Vacuum: 29"HgCFM: 250HP: 20RPM: 1750 SpecificationsGraphDimensions Single Stage Pumps Monoblock Pumps Double Stage Pumps