MD 4 NTDiaphragm pump
Overview
- contamination-free pumping and evacuation
- high flow rate even near ultimate vacuum
- whisper quiet
- very low vibration
- exceptionally long diaphragm life and maintenance-free drive system for low lifetime costs
Ultimate vacuum
1 mbar
Max. pumping speed 50 Hz
3.8 m3/h
Cat. No.
20736003
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.
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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. outlet 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 | 328 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 | |
| NRTL certification | Yes | |
| Items supplied | Pump completely mounted, ready for use, with manual. | |
| Rated mains voltage range 1 | 100-115 V | |
| Rated mains voltage range 2 | 120 V | |
| Mains frequency 1 | 50-60 Hz | |
| Mains frequency 2 | 60 Hz |
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Max. pumping speed 50 Hz
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Max. pumping speed 60 Hz
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Pump down graph 50 Hz (10 l volume)
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Pump down graph 60 Hz (10 l volume)
Downloads
Diaphragm pump MD 4 NT, three stage,certification (NRTL): C/US,100-115 V/50-60 V, 120 V/60 Hz, US mains cable
MD 4 NT
Diaphragm pump
Equipment
Application examples
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.
für Zoom klicken
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. outlet 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 | 328 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 | |
| NRTL certification | Yes | |
| Items supplied | Pump completely mounted, ready for use, with manual. | |
| Rated mains voltage range 1 | 100-115 V | |
| Rated mains voltage range 2 | 120 V | |
| Mains frequency 1 | 50-60 Hz | |
| Mains frequency 2 | 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,100-115 V/50-60 V, 120 V/60 Hz, US mains cable
MD 4 NT
Diaphragm pump
Equipment
Application examples
