Technology for vacuum systems Process Vacuum Solutions
  • Chemistry diaphragm pump MD 4C EX

    Chemistry diaphragm pump - MD 4C EX
    Send your inquiry now!
    MD 4C EX

    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

    MD 4C EX

    VACUUBRAND20696930ca. 305 mmca. 265 mmca. 29.3 kgca. 20696930 kg

    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.

    Technical data

    Technical dataUnit MD 4C EX
    Number of heads / stages4 / 3
    Max. pumping speedm3/h3.7
    Max. pumping speedcfm2.2
    Ultimate vacuum (abs.)mbar/torr3 / 2.3
    Ultim. vac. (abs.) with gas ballastmbar/torr10 / 7.5
    Integral leakage ratembar l/s0.1
    Ambient temperature range (operation)°C10 - 40
    Ambient temperature range (storage)°C-10 - 60
    Max. media temperature°C40
    Max. back pressure (abs.)bar1.1
    Inlet connectionsmall flange KF DN 25
    Outlet connectionsmall flange KF DN 16
    Rated motor powerkW0.25
    Max. operating currentA2.0
    Max. starting currentA10.2 A / 125 ms
    Rated speedmin-11500
    Protection classIP 54
    Dimensions (L x W x H), approx.mm440 x 265 x 305
    Weight, approx.kg29.3
    Noise level at 50 Hz, typ.dBA53
    ATEX conformityPumping chamber (pumped gases): II 2G Ex h IIC T3 Gb X
    Environment with inert purge gas: II 2G Ex h IIB T4 Gb X
    Environment without inert purge gas: II 3G Ex h IIB T4 Gc X
    Motor: II 2G Ex db IIB T4 Gb
    Items suppliedPump completely mounted, ready for use, with manual, 2 m cable without plug.
    AccessoriesPTFE tubing KF DN 16 (1000 mm: 20686031)
    PTFE tubing KF DN 25 (1000 mm: 20686033)

    MD 4C EX - Pumping speed graph at 50 Hz

    MD 4C EX - Pumping speed graph at 50 Hz

    MD 4C EX - Pump down graph at 50 Hz (100 l volume)

    MD 4C EX - Pump down graph at 50 Hz
(100 l volume)

    MD 4C EX - Dimension sheet

    MD 4C EX - Dimension sheet

    -Technical data are subject to change without notice-

    Ordering data

    Product nameMains voltage and frequencyPlugOrder no.
    MD 4C EX 230 V~ 50 Hz
    Open wires 20696930

    Product comparison


    Chemistry diaphragm pumpMZ 2C EX

    Chemistry diaphragm pump MZ 2C EX
    -12 18 1.9 ----------

    Chemistry diaphragm pumpMD 4C EX

    Chemistry diaphragm pump MD 4C EX
    -3 10 3.7 ----------

    Chemistry diaphragm pumpMV 10C EX

    Chemistry diaphragm pump MV 10C EX
    -2 10 8.1 ----------

    Chemistry diaphragm pumpMV 10C EX

    Chemistry diaphragm pump MV 10C EX +AK+EK
    MV 10C EX 2 10 8.1 --------

    Chemistry vacuum systemMZ 2C EX

    Chemistry vacuum system MZ 2C EX +AK+EK
    MZ 2C EX 12 18 1.9 --------

    Chemistry vacuum systemMD 4C EX

    Chemistry vacuum system MD 4C EX +AK+EK
    MD 4C EX 3 10 3.7 --------