VARIO® chemistry diaphragm pump MD 4C NT VARIO

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MD 4C NT VARIO

MD 4C NT VARIO

VACUUBRAND736500ca. 245 mmca. 243 mmca. 16.3 kg

VARIO® pumps provide precise vacuum control by adaptation of the diaphragm pump´s motor speed. The three-stage chemistry MD 4C NT VARIO diaphragm pump meets high vacuum requirements for most high boiling solvents. The on-demand motor speed control results in unsurpassed lifetimes of service parts, such as diaphragms.

Performance features

  • automatic adaptation of the vacuum level throughout the process for high process reliability and unattended operation
  • short process times due to high pumping speed and zero-fluctuation (hysteresis-free) vacuum control
  • easily operated CVC 3000 vacuum controller with clear text menus, with integrated venting valve
  • extraordinary diaphragm life, therefore minimum operational and servicing costs
  • excellent chemical resistance

Technical data

Unit Converter
Technical dataUnit MD 4C NT VARIO
Vacuum controllerCVC 3000
Number of heads / stages4 / 3
Max. pumping speedm3/h4.6
Max. pumping speedcfm2.7
Ultimate vacuum (abs.)mbar/torr1.5 / 1.1
Ultim. vac. (abs.) with gas ballastmbar/torr3 / 2.2
Ambient temperature range (operation)°C10 - 40
Ambient temperature range (storage)°C-10 - 60
Max. back pressure (abs.)bar1.1
Inlet connectionHose nozzle DN 8-10 mm
Outlet connectionHose nozzle DN 8-10 mm
Rated motor powerkW0.53
Motor speed rangemin-130 - 2400
Degree of protectionIP 20
Dimensions (L x W x H)mm325 x 243 x 245
Weightkg16.3
Noise level at 50 Hz, typ.dBA43
ATEX conformity (only 230V)II 3/- G IIC T3 X Internal Atm. only
Items suppliedPumping unit completely mounted, ready for use, with manual.
AccessoriesVent valve VBM-B (674217)
Rubber vacuum tubing DN 8 mm (686001)

MD 4C NT VARIO - Pumping speed graph

MD 4C NT VARIO - Pumping speed graph

MD 4C NT VARIO - Pump down graph (10 l volume)

MD 4C NT VARIO - Pump down graph
(10 l volume)

MD 4C NT VARIO - Dimension sheet

MD 4C NT VARIO - Dimension sheet

-Technical data are subject to change without notice-

Ordering data

Product nameMains voltage and frequencyPlug* Old order-no.* New order-no.
MD 4C NT VARIO 200-230 V~ 50-60 Hz
CEE 736500 20736500
200-230 V~ 50-60 Hz
CH 736501 20736501
100-120 V~ 50-60 Hz
US 736503 20736503
200-230 V~ 50-60 Hz
CN 736506 20736506

* As part of the implementation process of our new ERP system in 2018 our catalog numbers are extended to 8 digits in length by adding the digits “2” or “20” to the beginning of the old catalog numbers.

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