MD 4 NTDiaphragm pump
Overview
- contamination-free pumping and evacuation
- high flow rate even near ultimate vacuum
- whisper quiet and very low vibration
- exceptionally long diaphragm life and maintenance-free drive system for low lifetime costs
- This pump is supplied without a power cable. You can order the power cable in our online store separately with item number 20612065.
Ultimate vacuum
1 mbar
Max. pumping speed 50 Hz
3.8 m3/h
Diaphragm pump in action
These three-stage diaphragm pumps are an excellent solution for continuous, oil-free pumping of non-corrosive gases. They reach an excellent ultimate vacuum of 1 mbar. All parts in contact with pumped gases and vapors are made of aluminum, stainless steel and carefully selected plastics suitable for a wide range of applications with non-corrosive gases. The new NT-series provides whisper quiet and ultra-low vibration operation, high leak tightness and improved performance. The highly flexible fabric-reinforced double diaphragm made of FKM is ideal for extended operating life. These three-stage diaphragm pumps are an excellent choice for continuous, contamination-free evacuation and pumping of non-aggressive gases at demanding vacuum conditions. They are especially suitable for applications in physics and analytics. The low ultimate vacuum makes these an attractive alternative to rotary vane pumps in many applications. Typical uses are as backing pump for turbomolecular drag pumps, and for degassing of viscous media.
Technical data and graphs
| Max. pumping speed 50 Hz | 3.8 m3/h | Select diagram |
| Max. pumping speed 60 Hz | 2.5 cfm | Select diagram |
| 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 |
für Zoom klicken
Max. pumping speed 50 Hz
für Zoom klicken
Max. pumping speed 60 Hz
für Zoom klicken
Pump down graph 50 Hz (10 l volume)
für Zoom klicken
Pump down graph 60 Hz (10 l volume)
Downloads
Equipment
-
![Mains cable 120 V, US]()
![Rubber vacuum tubing, DN 8,price per meter]()
DN 8 mm, sale per meter Rubber vacuum tubing- Natural rubber + SBR
- Nominal width DN 8 mm
- Sale per meter
![Clamping ring, aluminum, KF DN 10/16]()
KF DN 10/16 Clamping ring for small flange- Quick link
- Nominal width KF DN 10/16
- Material Aluminum
![External centering ring, PBT,sealing ring NBR, KF DN 10/16]()
KF DN 10/16 External centring ring for small flange- Nominal width KF DN 10/16
- Material PBT
- Material sealing NBR
![Small flange with hose nozzleDN 16/DN 10, PP]()
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Application examples
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Diaphragm pump in action
These three-stage diaphragm pumps are an excellent solution for continuous, oil-free pumping of non-corrosive gases. They reach an excellent ultimate vacuum of 1 mbar. All parts in contact with pumped gases and vapors are made of aluminum, stainless steel and carefully selected plastics suitable for a wide range of applications with non-corrosive gases. The new NT-series provides whisper quiet and ultra-low vibration operation, high leak tightness and improved performance. The highly flexible fabric-reinforced double diaphragm made of FKM is ideal for extended operating life. These three-stage diaphragm pumps are an excellent choice for continuous, contamination-free evacuation and pumping of non-aggressive gases at demanding vacuum conditions. They are especially suitable for applications in physics and analytics. The low ultimate vacuum makes these an attractive alternative to rotary vane pumps in many applications. Typical uses are as backing pump for turbomolecular drag pumps, and for degassing of viscous media.
Technical data and graphs
Max. pumping speed 50 Hz 3.8 m3/h Select diagram Max. pumping speed 60 Hz 2.5 cfm Select diagram 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
für Zoom klicken
Max. pumping speed 50 Hz
für Zoom klicken
Max. pumping speed 60 Hz
für Zoom klicken
Pump down graph 50 Hz (10 l volume)
für Zoom klicken
Pump down graph 60 Hz (10 l volume)
Downloads
Diaphragm pump MD 4 NT, three stage,certification (NRTL): C/US,200-230 V/50-60 Hz, 100-115 V/50-60 Hz 120 V/60 Hzwithout mains cableMD 4 NT Diaphragm pumpEquipment
-
![Mains cable 120 V, US]()
![Rubber vacuum tubing, DN 8,price per meter]()
DN 8 mm, sale per meter Rubber vacuum tubing- Natural rubber + SBR
- Nominal width DN 8 mm
- Sale per meter
![Clamping ring, aluminum, KF DN 10/16]()
KF DN 10/16 Clamping ring for small flange- Quick link
- Nominal width KF DN 10/16
- Material Aluminum
![External centering ring, PBT,sealing ring NBR, KF DN 10/16]()
KF DN 10/16 External centring ring for small flange- Nominal width KF DN 10/16
- Material PBT
- Material sealing NBR
![Small flange with hose nozzleDN 16/DN 10, PP]()
This might also interest you
-
![MD 4 NT Diaphragm pump]()
MD 4 NT Diaphragm pump- Ultimate vacuum 1 mbar
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![MD 1 Diaphragm pump]()
MD 1 Diaphragm pump- Ultimate vacuum 1.5 mbar
- Pumping speed 1.2 m3/h
- Oilfree
![MD 4 VARIO select VARIO® diaphragm pump]()
Application examples
Fore vacuum for turbomolecular pumps
