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Leybold Trivac Vacuum Pump D4B**Unit has been tested as far as we could. Unit has missing Power Cord. See photos for further details.Leybold TRIVAC B vacuum pumps are designed for reliability and long service-life in mind. Directly linked to the motor via an elastic coupling element to ensure that the pump runs evenly and smoothly. With a type B 14 flanged motor screwed to the housing of the coupling. All pumps include a gas ballast valve as well as an inner section which may be exchanged without special tools or any special knowledge.Trouble-free operation even at 1000 mbar intake pressure is ensured by a built-in oil pump, providing force-feed lubrication of the bearings from where a minimum amount of lubricant is fed to the compression and expansion chambers to ensure lubrication of the sliding vanes. To minimize surface corrosion all components are protected by eliminating non-ferrous metals. The oil box, intake and exhaust line are made of aluminum and only solvent-resistant sealing materials are employed.Environment-friendlyLow noiseLow vibrationModern vacuum technologyHigh pumping speed right down to the ultimate pressureLow ultimate pressure, even with gas ballastHigh water vapor toleranceContinuous operation right up to 1000 mbarBuilt-in oil pump, force-feed lubrication sliding bearingMinimal inherent air intakeCompact, air cooledHandy, retractable handleAll controls and oil level check on the front sideEither horizontal or vertical intake and exhaust portPressure-controlled anti-suckback valveShaft seals and O-rings are all made of elastomer FPMSpecifications50 Hz 60 HzNominal pumping speed m3 x h-1 (cfm) 4.8 (2.8) 5.8 (3.4)Pumping speed m3 x h-1 (cfm) 4.2 (2.5) 5 (3)Ultimate partial pressurewithout gas ballast mbar (Torr)10-4(0.75 x 10-4)10-4(0.75 x 10-4)Ultimate total pressure without gas ballast mbar (Torr)< 2 x 10-3(< 1.5 x 10-3)< 2 x 10-3(< 1.5 x 10-3)Ultimate total pressure with gas ballastmbar (Torr)< 5 x 10-3(< 3.8 x 10-3)< 5 x 10-3(< 3.8 x 10-3)Water vapor tolerance mbar (Torr)30 (22.5)30 (22.5)Water vapor capacity g/h9393Oil filling, min. / max.l (qt) 0.3 / 0.8 (0.3 / 0.85) 0.3 / 0.8 (0.3 / 0.85)Noise level 2) to DIN 45 635, without / with gas ballastdB(A)50 / 5250 / 52Admissible ambient temperature C (F)12 - 40 (54 - 104)12 - 40 (54 - 104)Motor rating W (HP)370 (0.50)370 (0.50)Nominal speed rpm15001800Type of protection IP5454Connections, Intake and Exhaust DN16 KF16 KFAdditional Prep Fees May Apply