MD 4C EX
ATEX chemistry diaphragm pumps offer all advantages of oil-free chemistry diaphragm pumps. Typical applications are rotary evaporators and drying ovens with potentially explosive atmospheres. The pumps are mainly made of antistatic materials. Included in delivery is a separate gas ballast connection part for use of inert gas.
Performance features
- outstanding chemical resistance and superior vapor tolerance
- flame proof motor with integrated, self-locking overload and excess temperature protection for direct 230V / 50Hz single phase power supply
- no technically demanding over current protection by customer necessary
- overpressure safety relief valves internally and at outlet
- safety diaphragm technology with option for inert gas purge and detection of diaphragm breakage
Technical data
| Technical data | Unit |
MD 4C EX |
| Number of heads / stages | | 4 / 3 |
| Max. pumping speed | m3/h | 3.7 |
| Max. pumping speed | cfm | 2.2 |
| Ultimate vacuum (abs.) | mbar/torr | 3 / 2.3 |
| Ultim. vac. (abs.) with gas ballast | mbar/torr | 10 / 7.5 |
| Integral leakage rate | mbar l/s | 0.1 |
| Ambient temperature range (operation) | °C | 10 - 40 |
| Ambient temperature range (storage) | °C | -10 - 60 |
| Max. media temperature | °C | 40 |
| Max. back pressure (EX) (abs.) | bar | 1.1 |
| Inlet connection (IN) | | Small flange KF DN 25 |
| Outlet connection (EX) | | Small flange KF DN 16 |
| Rated motor power | kW | 0.25 |
| Max. operating current | A | 2 |
| Max. starting current | A | 10.2 A / 125 ms |
| Rated speed | min-1 | 1500 |
| Degree of protection | | IP 54 |
| Dimensions (L x W x H), approx. | mm | 440 x 265 x 305 |
| Weight, approx. | kg | 29.3 |
| Noise level at 50 Hz, typ. | dBA | 53 |
| CE mark | | Yes |
| ATEX conformity | | Pumping chamber (pumped gases): II 2G IIC T3 X
Environment with inert purge gas: II 2G IIB T4 X
Environment without inert purge gas: II 3G IIB T4 X
Motor: II 2G Ex d IIB T4 |
| Items supplied | | Pump completely mounted, ready for use, with manual, 2 m cable without plug |
| Accessories | | PTFE tubing KF DN 16 (1000 mm: 686031)
PTFE tubing KF DN 25 (1000 mm: 686033) |
MD 4C EX - Pumping speed graph at 50 Hz MD 4C EX - Pump down graph at 50 Hz
(100 l volume) |
MD 4C EX - Dimension sheet |
-Technical data are subject to change without notice-
Ordering data
| Product name | Mains voltage and frequency | Plug | Order no. |
|---|
| MD 4C EX | 230 V~ 50 Hz
| Open wires | 696930 |
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