Chemistry diaphragm pump MD 4C NT
Description
MD 4C NT
Three-stage chemistry-design diaphragm pumps are an excellent solution for continuous, oil-free pumping of corrosive gases and vapors and meet even challenging requirements. The three-stage design provides the advantageous combination of high pumping speed and very low ultimate vacuum. All parts of the MD 4C NT in contact with pumped media are made of chemically resistant fluoroplastics. Well-proven PTFE sandwich diaphragms provide increased reliability and extended operating life. Due to the gas ballast valve and its very good ultimate vacuum (even with gas ballast) the MD 4C NT is also suitable for pumping condensable vapors of high-boiling solvents. The new NT-series features further improved performance data, easy service and superior vapor tolerance.
Performance features
- outstanding chemical resistance and superior vapor tolerance
- exceptionally high performance even at low vacuum
- excellent ultimate vacuum even with gas ballast
- whisper quiet and very low vibration
- long diaphragm life, maintenance-free drive system
Technical data / Ordering data
Technical data
| Technical data | Unit | MD 4C NT |
|---|---|---|
| Number of heads / stages | 4 / 3 | |
| Max. pumping speed at 50/60 Hz | m3/h | 3.4 / 3.8 |
| Max. pumping speed at 50/60 Hz | cfm | 2.0 / 2.2 |
| Ultimate vacuum (abs.) | mbar/torr | 1.5 / 1.1 |
| Ultim. vac. (abs.) with gas ballast | mbar/torr | 3 / 2.2 |
| Ambient temperature range (operation) | °C | 10 - 40 |
| Ambient temperature range (storage) | °C | -10 - 60 |
| Max. back pressure (abs.) | bar | 1.1 |
| Inlet connection | Hose nozzle DN 10 mm | |
| Outlet connection | Hose nozzle DN 10 mm | |
| Rated motor power | kW | 0.25 |
| Rated motor speed at 50/60 Hz | min-1 | 1500/1800 |
| Degree of protection | IP 40 | |
| Dimensions (L x W x H) | mm | 325 x 243 x 198 |
| Weight | kg | 14.3 |
| Noise level at 50 Hz, typ. | dBA | 45 |
| NRTL certification | Canada and the USA | |
| ATEX conformity (only 230V) | II 3G IIC T3 X Internal Atm. only | |
| Items supplied | Pump completely mounted, ready for use, with manual. | |
| Accessories | Rubber vacuum tubing DN 10 mm (686002) |
MD 4C NT - Pumping speed graph at 50 Hz MD 4C NT - Pump down graph at 50 Hz (10 l volume) MD 4C NT - Pumping speed graph at 60 Hz MD 4C NT - Pump down graph at 60 Hz (10 l volume) |
MD 4C NT - Dimension sheet |
-Technical data are subject to change without notice-
Ordering data
| Product name | Mains voltage and frequency | Plug | Order no. |
|---|---|---|---|
| MD 4C NT | 230 V~ 50-60 Hz | CEE | 736400 |
| 230 V~ 50-60 Hz | CH, CN | 736401 | |
| 230 V~ 50-60 Hz | UK | 736402 | |
| 100-115 V~ 50-60 Hz 120 V~ 60 Hz | US | 736403 |
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