MD 4CRL NTChemistry diaphragm pump
Overview
- outstanding chemical resistance
- exceptionally high performance even close to the very low ultimate vacuum
- integral leakage rate 0.001 mbar l/s verified at every single pump
- whisper quiet and very low vibration
- long diaphragm life, maintenance-free drive system
Ultimate vacuum
1.5 mbar
Ultimate vacuum with gas ballast
# mbar
Max. pumping speed 50 Hz
3.4 m3/h
Chemistry diaphragm pump in action
For applications requiring an especially high leak tightness of the pump, we recommend the MD 4CRL NT. The three-stage construction provides the advantageous combination of high pumping speed and very low ultimate vacuum. All major parts of the MD 4CRL NT in contact with pumped media are made of chemically resistant fluoroplastics or a special, highly corrosion-resistant stainless steel. Well-proven PTFE sandwich diaphragms provide increased reliability and extended operating life. Every single pump is tested for an integral leakage rate of 0.001 mbar l/s. For applications requiring an especially high leak tightness of the pump, we recommend the MD 4CRL NT. The wetted parts of the pump are made of fluoroplastics and a special, highly corrosion-resistant stainless steel. Every single pump is tested for an integral leakage rate of 0.001 mbar l/s.
Technical data and graphs
| Max. pumping speed 50 Hz | 3.4 m3/h | |
| Max. pumping speed 60 Hz | 2.2 cfm | |
| Ultimate vacuum | 1.5 mbar / 1.1 torr | |
| Ultimate vacuum with gas ballast | # mbar / # 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 | small flange KF DN 16 | |
| 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 W in mm | 243 mm | |
| Dimension H in mm | 198 mm | |
| Weight | 19.8 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 |
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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)
für Zoom klicken
Pump down graph 60 Hz (10 l volume)
Equipment
-
![Silencer with hose DN 8-10mm]()
Silencer with hose 5cm![Rubber vacuum tubing, DN 8,
price per meter]()
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Chemistry diaphragm pump in action
For applications requiring an especially high leak tightness of the pump, we recommend the MD 4CRL NT. The three-stage construction provides the advantageous combination of high pumping speed and very low ultimate vacuum. All major parts of the MD 4CRL NT in contact with pumped media are made of chemically resistant fluoroplastics or a special, highly corrosion-resistant stainless steel. Well-proven PTFE sandwich diaphragms provide increased reliability and extended operating life. Every single pump is tested for an integral leakage rate of 0.001 mbar l/s. For applications requiring an especially high leak tightness of the pump, we recommend the MD 4CRL NT. The wetted parts of the pump are made of fluoroplastics and a special, highly corrosion-resistant stainless steel. Every single pump is tested for an integral leakage rate of 0.001 mbar l/s.
Technical data and graphs
Max. pumping speed 50 Hz 3.4 m3/h Max. pumping speed 60 Hz 2.2 cfm Ultimate vacuum 1.5 mbar / 1.1 torr Ultimate vacuum with gas ballast # mbar / # 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 small flange KF DN 16 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 W in mm 243 mm Dimension H in mm 198 mm Weight 19.8 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)
Equipment
-
![Silencer with hose DN 8-10mm]()
Silencer with hose 5cm![Rubber vacuum tubing, DN 8,
price per meter]()
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Application examples
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