Description
MD 4 NT is a three-stage diaphragm pump intended for laboratory vacuum work, supplied without a power cable for flexible installation. It carries NRTL certification (C/US) and supports multi-range electrical operation at 200-230 V/50-60 Hz, 100-115 V/50-60 Hz and 120 V/60 Hz, allowing use across common laboratory power supplies. The compact membrane-pump design from manufacturer VACUUBRAND delivers clean, oil-free vacuum generation suited to routine analytical, filtration and process tasks in research and quality-control settings. Net weight is 14.7 kg and gross weight 17.2 kg, reflecting a robust build for continuous laboratory duty. Manufactured in Germany and offered as a single unit, the MD 4 NT integrates readily into existing bench or system layouts where a certified three-stage diaphragm pump without a fixed mains lead is required. Its multi-voltage capability and NRTL listing simplify deployment in regulated laboratory environments that demand reliable, maintenance-friendly vacuum performance.
This article is part of Vacuum pumps, in Pumps, vacuum & evaporation.
Key features
- Pack size: 1 pc
- Product type: Three-stage diaphragm pump
- Model: MD 4 NT
- Power cable: Without power cable
- Certification: NRTL C/US
- Voltage: 200-230 V/50-60 Hz, 100-115 V/50-60 Hz, 120 V/60 Hz
- Manufacturer: VACUUBRAND
- UNSPSC: 41104900
- Max. pumping speed 50 Hz: 3.8 m³/h
- Max. pumping speed 60 Hz: 2.5 cfm
- Ultimate vacuum: 1 mbar / 0.75 torr
- Number of heads: 4
- Number of stages: 3
- Lower ambient temperature (operation): 10 °C
- Upper ambient temperature (operation): 40 °C
- Lower ambient temperature (storage): -10 °C
- Upper ambient temperature (storage): 60 °C
- Max. back pressure (abs.): 1.1 bar
- Inlet connection: small flange KF DN 16
- Outlet connection: Silencer / G1/4"
- Rated motor power: 0.25 kW
- Rated motor speed at 50/60 Hz: 1500/1800 min⁻¹
- Protection class IEC 60529: IP 40
- Dimension L in mm: 325 mm
- Dimension B in mm: 239 mm
- Dimension H in mm: 198 mm
- Weight: 16.4 kg
- Noise (sound pressure level) in dBA at 50 Hz or 1500 rpm/62% (VARIO)/1500 rpm (VARIO-SP)/12500 Upm (VACUU·PURE®): 45 dBA
- ATEX conformity: II 3/- G Ex h IIC T3 Gc X Internal Atm. only
- NRTL certification: Yes
- Items supplied: Pump completely mounted, ready for use, with manual.
- Rated mains voltage range 1: 200-230 V
- Rated mains voltage range 2: 100-115 V
- Rated mains voltage range 3: 120 V
- Mains frequency 1: 50-60 Hz
- Mains frequency 2: 50-60 Hz
- Mains frequency 3: 60 Hz
- Technical Information Sheet:
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Questions about MD 4 NT, without mains cable
What is this article?
MD 4 NT, without mains cable is the article on this page. Luminix Health distributes Vacuubrand for laboratory use. It sits in Vacuum pumps, inside Pumps, vacuum & evaporation, in Lab instruments.
A laboratory vacuum pump lowers pressure for filtration or evaporation. A diaphragm pump tolerates solvent vapour better than an oil-sealed rotary vane pump, and it reaches a milder vacuum. The ultimate vacuum and the flow, and whether the wetted path survives the solvent, are the choices.
A vacuum pump lowers the pressure above a liquid so it boils at a lower temperature. That is the point of a rotary evaporator: solvent leaves a sample without cooking it. A diaphragm pump or a rotary-vane pump is chosen by the vacuum it reaches and by whether solvent vapour will destroy it. A peristaltic pump moves liquid by squeezing a tube, so the liquid touches only the tube. A barrel pump transfers a larger volume from a drum. The glassware on the evaporator is indexed under ISO laboratory glassware. Solvent identity is on PubChem.
Which category should I open next?
The category is Pumps, vacuum & evaporation. The sub-category is Vacuum pumps. The catalogue is Lab instruments.
Shelves beside this one are Rotary evaporators, Peristaltic & dosing pumps, Vacuum & pump accessories, Drum, barrel & transfer pumps and Pumps (other) & accessories.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Delivery across Europe, two to five days when in stock. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.
