VARIO® diaphragm pump MD 12 NT VARIO

For this product a successor is launchedSuccessor...
Interested? - Send your inquiry now!
MD 12 NT VARIO

MD 12 NT VARIO

VACUUBRAND743100ca. 420 mmca. 260 mmca. 31.2 kg

These oil-free diaphragm pumps are especially powerful pumps for evacuation and pumping of non aggressive gases. The three-stage design combines especially high pumping speed with excellent ultimate vacuum down to 2 mbar, and down to 1.5 mbar with the VARIO® version. It provides precise vacuum control and consists always of the pump and the CVC 3000 vacuum controller with external gauge head. For the use as backing pump it features continuous adaptation of running speed for optimized forevacuum. The highly flexible, fabric-reinforced double diaphragm made of FKM offers extended operating life that increases significantly in motor speed controlled operation. Like all VACUUBRAND diaphragm pumps they generate an absolutly oil-free and clean vacuum as they work without any sliding seals. Hence generation of dust that might creep back into the high vacuum application, as often found with Scroll or piston pumps, is excluded.

Performance features

  • contamination-free pumping and evacuation
  • high flow rate even near ultimate vacuum
  • VARIO® model includes the easily operated CVC 3000 vacuum controller with clear text menus, removable
  • VARIO® version offers self-regulating vacuum optimization throughout the process
  • TURBO·MODE in VARIO® version with even better ultimate vacuum especially for backing of turbo pumps

Technical data

Unit Converter
Technical dataUnit MD 12 NT VARIO
Vacuum controllerCVC 3000
Number of heads / stages8 / 3
Max. pumping speedm3/h13.4
Max. pumping speedcfm7.9
Ultimate vacuum (abs.)mbar/torr1.5 / 1.1
Ambient temperature range (operation)°C10 - 40
Ambient temperature range (storage)°C-10 - 60
Max. back pressure (abs.)bar1.1
Inlet connectionSmall flange KF DN 25
Outlet connectionSilencer / G1/2"
Rated motor powerkW0.53
Motor speed rangemin-130 - 2400
Degree of protectionIP 40
Dimensions (L x W x H)mm554 x 260 x 420
Weightkg31.2
Noise level at 50 Hz, typ.dBA50
ATEX conformity (only 230V)II 3/- G IIC T3 X Internal Atm. only
Items suppliedPump completely mounted, ready for use, with manual.
AccessoriesStainless steel tubing KF DN 25 (1000 mm: 673337)
Hose nozzle DN 15 mm / G1/2" (642472)
Small flange KF DN 16 / G1/2" (672101)
Vent valve VBM-B (674217)

MD 12 NT VARIO - Pumping speed graph

MD 12 NT VARIO - Pumping speed graph

MD 12 NT VARIO - Pump down graph (100 l volume)

MD 12 NT VARIO - Pump down graph
(100 l volume)

MD 12 NT VARIO - Dimension sheet

MD 12 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 12 NT VARIO 200-230 V~ 50-60 Hz
CEE 743100 20743100
100-120 V~ 50-60 Hz
US 743103 20743103

* 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.

Product comparison

111121111111111
  1111          

Diaphragm pump
MD 1

Diaphragm pump MD 1
-1.5 -1.2 1.4 --✓-------

Diaphragm pump
MD 4 NT

Diaphragm pump MD 4 NT
-1 -3.8 4.3 --✓-------

VARIO® diaphragm pump
MD 4 VARIO
select

VARIO® diaphragm pump MD 4 VARIO select
-1 -5.7 5.7--✓-----✓✓

Diaphragm pump
MD 12 NT

Diaphragm pump MD 12 NT
-2 -12.1 13.3 --✓-------

VARIO® chemistry pump
MD 12 VARIO
select

VARIO® chemistry pump MD 12 VARIO select
-1.5 -16.0 16.0--✓-----✓✓