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MD 12 NTDiaphragm pump

Overview

  • contamination-free pumping and evacuation
  • high flow rate even near ultimate vacuum
  • whisper quiet
  • reduced process times
  • exceptionally long diaphragm life and maintenance-free drive system for low lifetime costs

Ultimate vacuum

2 mbar

Max. pumping speed 50 Hz

12.1 m3/h

Diaphragm pump in action

The MD 12 NT diaphragm pump is an especially powerful pump for oil-free evacuation and pumping of non aggressive gases. The three-stage design of this eight-cylinder pump provides the advantageous combination of very high pumping speed and excellent ultimate vacuum. The flow path consists of aluminium, stainless steel and carefully selected plastics to permit a wide range of applications. The fabric-reinforced double diaphragms are made of highly flexible FKM for extended operating life and high vacuum performance. Eight-cylinder NT pumps feature quiet operation, with smooth and easy-to-clean surfaces. Like all VACUUBRAND diaphragm pumps they operate absolutely oil-free and do not have any sliding components in the gas path. In normal operation they are completely free of abrasion. This eliminates most of the particulate impurities frequently generated inside of scroll or piston pumps. The MD 12 NT is an excellent choice for continuous, oil-free evacuation and pumping of non-aggressive gases especially for applications in physics and analytics. Due to the very good ultimate vacuum the MD 12 NT is often used as an alternative to rotary vane pumps, for example for vacuum ovens, for very quick and efficient degassing of viscous media, exhaust gas analytics and especially as backing pump for large turbomolecular drag pumps. The particularly high pumping speed enables the usage at bigger vacuum apparatus and with high gas throughput. The pump is extraordinarily silent and exhibits very low vibration making it an excellent choice on sensitive equipment such as electron microscopes. Back diffusion of oil or even oil back flow, e.g., into a high vacuum chamber is excluded due to its oil-free operation.

Technical data and graphs

Max. pumping speed 50 Hz 12.1 m3/h Select diagram
Max. pumping speed 60 Hz 7.1 cfm Select diagram
Ultimate vacuum 2 mbar / 1.5 torr
Number of heads 8
Number of stages 3
Lower ambient temperature (operation) 10 °C
Upper ambient temperature (operation) 40 °C
Lower ambient temperature (storage) -10 °C
Upper ambient temperature (storage) 60 °C
Max. back pressure (abs.) 1.1 bar
Inlet connection small flange KF DN 25
Outlet connection G1/2"
Rated motor power 0.53 kW
Rated motor speed at 50/60 Hz 1650 min-1
Protection class IP 40
Dimension L in mm 554 mm
Dimension W in mm 260 mm
Dimension H in mm 359 mm
Weight 30.2 kg
Noise level at 50 Hz, typ. 50 dBA
ATEX conformity II 3/- G Ex h IIC T3 Gc X Internal Atm. only
NRTL certification No
Items supplied Pump completely mounted, ready for use, silencer, with manual.
Rated mains voltage range 1 200-230 V
Mains frequency 1 50-60 Hz

Downloads

Please select a plug type to obtain its operating instructions.

Equipment

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Application examples

Fore_vacuum_for_turbomolecular_pumps
Fore vacuum for turbomolecular pumps

Diaphragm pump in action

The MD 12 NT diaphragm pump is an especially powerful pump for oil-free evacuation and pumping of non aggressive gases. The three-stage design of this eight-cylinder pump provides the advantageous combination of very high pumping speed and excellent ultimate vacuum. The flow path consists of aluminium, stainless steel and carefully selected plastics to permit a wide range of applications. The fabric-reinforced double diaphragms are made of highly flexible FKM for extended operating life and high vacuum performance. Eight-cylinder NT pumps feature quiet operation, with smooth and easy-to-clean surfaces. Like all VACUUBRAND diaphragm pumps they operate absolutely oil-free and do not have any sliding components in the gas path. In normal operation they are completely free of abrasion. This eliminates most of the particulate impurities frequently generated inside of scroll or piston pumps. The MD 12 NT is an excellent choice for continuous, oil-free evacuation and pumping of non-aggressive gases especially for applications in physics and analytics. Due to the very good ultimate vacuum the MD 12 NT is often used as an alternative to rotary vane pumps, for example for vacuum ovens, for very quick and efficient degassing of viscous media, exhaust gas analytics and especially as backing pump for large turbomolecular drag pumps. The particularly high pumping speed enables the usage at bigger vacuum apparatus and with high gas throughput. The pump is extraordinarily silent and exhibits very low vibration making it an excellent choice on sensitive equipment such as electron microscopes. Back diffusion of oil or even oil back flow, e.g., into a high vacuum chamber is excluded due to its oil-free operation.

Technical data and graphs

Max. pumping speed 50 Hz 12.1 m3/h Select diagram
Max. pumping speed 60 Hz 7.1 cfm Select diagram
Ultimate vacuum 2 mbar / 1.5 torr
Number of heads 8
Number of stages 3
Lower ambient temperature (operation) 10 °C
Upper ambient temperature (operation) 40 °C
Lower ambient temperature (storage) -10 °C
Upper ambient temperature (storage) 60 °C
Max. back pressure (abs.) 1.1 bar
Inlet connection small flange KF DN 25
Outlet connection G1/2"
Rated motor power 0.53 kW
Rated motor speed at 50/60 Hz 1650 min-1
Protection class IP 40
Dimension L in mm 554 mm
Dimension W in mm 260 mm
Dimension H in mm 359 mm
Weight 30.2 kg
Noise level at 50 Hz, typ. 50 dBA
ATEX conformity II 3/- G Ex h IIC T3 Gc X Internal Atm. only
NRTL certification No
Items supplied Pump completely mounted, ready for use, silencer, with manual.
Rated mains voltage range 1 200-230 V
Mains frequency 1 50-60 Hz

vac_pumpingspeedm3 für Zoom klicken

Max. pumping speed 50 Hz

vac_pumpingspeedcfm für Zoom klicken

Max. pumping speed 60 Hz

vac_pumpingcurve50 für Zoom klicken

Pump down graph 50 Hz (100 l volume)

vac_pumpingcurve60 für Zoom klicken

Pump down graph 60 Hz (100 l volume)

Downloads

Please select a plug type to obtain its operating instructions.

Equipment

This might also interest you

Application examples

Fore_vacuum_for_turbomolecular_pumps
Fore vacuum for turbomolecular pumps