DescriptionLEYBOLD TRIVAC PUMPSLeybold 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.Special featuresEnvironment-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 FPMLeybold D25B Vacuum Pump 20.9 cfm REBUILT w/ 1 Year Warranty 11276 Specifications 50 Hz60 HzNominal pumping speed 1)m3 x h-1 (cfm)29.5 (17.4)35.4 (20.9)Pumping speed 1)m3 x h-1 (cfm)25.7 (15.1)30.8 (18.2)Ultimate partial pressure without gas ballast 1) mbar (Torr) 10-4 (0.75 x 10-4) 10-4 (0.75 x 10-4)Ultimate total pressure without gas ballast 1) 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 ballast 1) mbar (Torr) < 5 x 10-3 (3.8 x 10-3) < 5 x 10-3 (3.8 x 10-3)Water vapor tolerance 1)mbar (Torr)25 (18.8)25 (18.8)Water vapor capacityg/h476476Oil filling, min. / max.l (qt)0.6 / 1.4 (0.6 / 1.5)0.6 / 1.4 (0.6 / 1.5)Noise level 2) to DIN 45 635 without / with gas ballastdB(A) 52 / 62 52 / 62Admissible ambient temperature°C (°F)12 - 40 (54 - 104)12 - 40 (54 - 104)Motor rating 2)W (HP)750 (1)750 (1)Nominal speedrpm15001800Type of protection 3)IP5454Weight 2)kg (lbs)32 (70.6)32 (70.6)Connections, Intake and ExhaustDN25 KF25 KF
