Diaphragm Vacuum Pump N 920 G | Type: N 920 G

The Pump combines a high flow rate with a very compact design. Suitable for filtration, SPE, and liquid aspiration using a vacuum. Due to the manual rotational speed control, the pump is quiet, very energy efficient, and can be optimally adjusted in accordance with the application.Easy-to-clean surfaceVery small footprintAdjustable in flowrate due to manual rotational speed controlPTFE-coated diaphragm for use with aggressive/corrosive gases and vaporsSpecificationsUltimate vacuum (abs.): Operating pressure:130 mbar 2.5 barConnectors for tube:ID 6 mmPermissible ambient temperature:5 ... 40 °CPump head:PPSDiaphragm:PTFE coatedValves:FKM

For Filtration, SPE, Degassing, Fluid aspiration.N 938.50 KT.18 ensures exceptionally fast evacuation by the parallel and in series connection of both pump headsPTFE-coated diaphragm is ideal for aggressive/corrosive gases and vaporsPump head made from PPS (Polyphenylsulfide), valves made from FFPM (Perfluoro rubber)SpecificationsConnectors for tube: N 816.3 KT.18 / N 816.1.2 KT.18: N 938.50 KT.18:ID6 mm ID10 mmPermissible media and ambient temperature:5 to 40 °CFlow rate:Up to 1.8 m³/hUltimate vacuum:Up to 15 mbar abs.IP code:IP 20

Application: Fluid aspiration, Degassing, Gel drying, Rotary evaporation, Centrifugal concentration, DistillationFlow rate up to 2.04 m³/h / Ultimate vacuum up to 8 mbar abs.High level of vapor and condensate compatibilityPTFE pump head combined with PTFE-coated diaphragm are ideal for extremely aggressive/corrosive gases and vaporsN 820.3 FT.18 and N 840.3 FT.18: ATEX-compliant in accordance with ATEX II 2/-G IIB+H2 T3 Gb internal atmosphere onlySpecificationsOperating pressure:1 barConnectors for tube:ID10 mmPermissible media and ambient temperature:5 to 40 °CPump head:PTFEDiaphragm:PTFE-coatedValves:FFPM

Improved performance, increased pumping speed (up to 16 m³/h) and better ultimate vacuum (up to 0.3 mbar). Extend applications with non-aggressive gases whether used in the laboratory or for industrial processesVery low leak rate due to enhanced leak-tight tubing connections, resulting in consistent performance characteristics - even after many years of operation. Ideal for analytical applicationsLong diaphragm and valve lifetimes: made of highly flexible FPM, with fabric-reinforced double diaphragms for improved long term stabilityVery quiet and ultra low vibration due to compact drive with patented motor drive system. Ideal as a built-in component for sensitive analytical equipmentEasy to clean due to smooth surfaces. A robust solution for numerous applications in industrial environmentsThe VARIO® design provides vacuum control by precise and continuous adaption of the diaphragm pumps motor speed, and includes the vacuum pump, as well as the VACUU·SELECT controller.Country-specific power cord versions available on request.SpecificationsVacuum inletTubing nozzle DN 8-10 mm:ME 4 NT, ME 4R NT, ME 8 NT, MZ 2 NT, ME 2 NTKF DN 16:MZ 2D NT, MD 4 NT, MV 2 NT, MD 4 VARIO select, MD 2 VARIO selectPressure outletSilencer / G1/4":MZ 2 NT, MZ 2D NT, MD 4 NT, MV 2 NT, ME 2 NT, MD 4 VARIO select, MV 2 VARIO selectTwin silencers / G1/4":ME 8 NT, ME 4 NTTubing nozzle DN 8-10 mm:ME 4R NTKF DN 25:MD 12 NT, MV 10 NT, ME 16 NT, MD 12 NT VARIO select, MV 10 NT VARIO selectSilencer / G1/2":MD 12 NT, MV 10 NT, ME 16 NT, MD 12 NT VARIO select, MV 10 NT VARIO select

ATEX chemistry diaphragm pumps offer all advantages of oil-free chemistry diaphragm pumps. Typical applications are rotary evaporators and drying ovens with potentially explosive atmospheres. The ATEX approval includes the interior of the pump (in contact with pumped gases) as well as the surrounding area of the pump.Outstanding chemical resistance and superior vapor toleranceMainly made of antistatic materialsFlame proof motor with integrated, self-locking overload and excess temperature protection for direct 230V / 50Hz single phase power supplyOverpressure safety relief valves internally and at outletWith separate gas ballast connection part for use of inert gasSafety diaphragm technology with option for inert gas purge and detection of diaphragm breakageATEX compliance:Pump chamber (pumped gases): II 2G IIC T3 XExterior space (pump environment): II 2G IIB T4 X (with inert gas purging) / II 3G IIB T4 X (without inert gas purging)Speed-controlled ATEX VARIO vacuum pumps on request.SpecificationsMZ 2C EXVacuum inlet:Small flange KF DN 16Pressure outlet:Small flange KF DN 16MV 10C EX / MD 4C EXVacuum inlet:Small flange KF DN 25Pressure outlet:Kleinflansch KF DN 16MZ 2C EX+AK+EK / MD 4C EX+AK+EKVacuum inlet:Small flange KF DN 16Pressure outlet:Tubing nozzle DN 8-10 mmCooling water connection:2 x tubing nozzle DN 6-8 mm

Improved performance, increased pumping speed and lower ultimate vacuum extends applications in both the laboratory and in industrial applicationsLong-life diaphragm with PTFE sandwich construction and unstressed diaphragm supportEasy service/exchange of diaphragm or valves due to novel integrated valve head assembly. Easy dismantling, cleaning and reassembly without requiring readjustmentVery quiet and ultra low vibration due to compact drive with patented motor control system. Ideal as a built-in component for sensitive equipment in both the laboratory and in industrySuperior vapour tolerance due to integral tubing connections and gas ballast valve for continuous purge (for ME 16C NT, MZ 2C NT, MD 4C / 12C NT and MV 10C NT)Easy to clean due to smooth exterior surfacesThe VARIO® design provides vacuum control by precise and continuous adaption of the chemistry diaphragm pumps motor speed, and includes the vacuum pump, as well as the VACUU·SELECT controller.Diaphragm pump MD 4CRL NT with reduced leakage rate (0.001 mbar x l/s).Country-specific power cord versions available on request.

For the maintenance of KNF pumps. Contains all necessary membranes, seals, etc.