Vacuubrand MD 4C EX ATEX chemistry diaphragm pumps
Artikelnummer20696930
MengeneinheitStück
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 (abs.) bar 1.1
Inlet connection Small flange KF DN 25
Outlet connection Small flange KF DN 16
Rated motor power kW 0.25
Max. operating current A 2.0
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
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 Gb
Items supplied Pump completely mounted, ready for use, with manual, 2 m cable without plug.
Accessories PTFE tubing KF DN 16 (1000 mm: 20686031)
PTFE tubing KF DN 25 (1000 mm: 20686033)
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 ATEX approval includes the interior of the pump (in contact with pumped gases) as well as the surrounding area of the pump. All wetted parts of the pumps have excellent chemical resistance and 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 need for any additional and specific overcurrent protection device
- overpressure safety relief valves internally and at outlet
- safety diaphragm technology with option for inert gas purge and detection of diaphragm breakage