Articleno.
20736350

MD 4 VARIO selectVARIO® diaphragm pump

Overview

  • VACUU·SELECT vacuum controller with graphical user interface and predefined applications simplifies work in the laboratory
  • extraordinary diaphragm life for minimum operational and servicing costs
  • contamination-free pumping and evacuation
  • excellent ultimate vacuum and TURBO·MODE for use as backing pump for turbo pumps
  • #

Ultimate vacuum

1 mbar

Max. pumping speed 50 Hz

5.7 m3/h

On demand

Inquire

VARIO® diaphragm pump in action

This three-stage diaphragm pump is an excellent solution for continuous, oil-free pumping of non-corrosive gases to a vacuum level as deep as 1 mbar. All wetted parts are made of aluminum, stainless steel and carefully selected plastics suitable for a wide range of applications with non-corrosive gases. The MD 4 VARIO select continuously adapts its motor speed to hold the desired vacuum level. That means the pump is whisper-quiet and generates ultra-low vibrations, and has high leak tightness. The highly flexible fabric-reinforced double FKM diaphragm is ideal for extended operating life. The VARIO design includes the variable speed pump and the VACUU·SELECT vacuum controller with external gauge head. The demand-responsive motor speed control on VARIO models further extends the already long lifetimes of diaphragms and valves. These three-stage diaphragm pumps are an excellent choice for continuous, contamination-free evacuation and pumping of non-aggressive gases at demanding vacuum conditions. They are especially suitable for applications requiring high volume flow in physics and analytics. The low ultimate vacuum makes these an attractive alternative to rotary vane pumps. Typical uses are as backing (roughing) pumps for turbomolecular drag pumps, for degassing of viscous media, as well as for exhaust gas analytics. Additionally, the VARIO® model provides vacuum control by precise adjustment of the diaphragm pump´s motor speed to process requirements. Back diffusion of oil or even oil back flow, e.g., into a high vacuum chamber is excluded due to its oil-free operation. For equipment manufacturers customized versions are available. Depending on the application the demand-responsive motor speed control of VARIO® models further extends the long diaphragm life for which VACUUBRAND pumps are well-known. In additon it provides an even higher pumping speed and enables precise vacuum control.

Technical data and graphs

Max. pumping speed 50 Hz 5.7 m3/h Select diagram
Max. pumping speed 60 Hz 3.4 cfm
Ultimate vacuum 1 mbar / 0.75 torr
Number of heads 4
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
Anschluss saugseitig small flange KF DN 16
Outlet connection Silencer / G1/4"
Rated motor power 0.53 kW
Protection class IP 20
Dimension L in mm 325 mm
Dimension W in mm 235 mm
Dimension H in mm 245 mm
Weight 19.1 kg
Noise level at 50 Hz, typ. 45 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, 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_pumpingcurve50 für Zoom klicken

Pump down graph 50 Hz (10 l volume)

Downloads

Please select a plug type to obtain its operating instructions.

Equipment

This might also interest you

VARIO® diaphragm pump in action

This three-stage diaphragm pump is an excellent solution for continuous, oil-free pumping of non-corrosive gases to a vacuum level as deep as 1 mbar. All wetted parts are made of aluminum, stainless steel and carefully selected plastics suitable for a wide range of applications with non-corrosive gases. The MD 4 VARIO select continuously adapts its motor speed to hold the desired vacuum level. That means the pump is whisper-quiet and generates ultra-low vibrations, and has high leak tightness. The highly flexible fabric-reinforced double FKM diaphragm is ideal for extended operating life. The VARIO design includes the variable speed pump and the VACUU·SELECT vacuum controller with external gauge head. The demand-responsive motor speed control on VARIO models further extends the already long lifetimes of diaphragms and valves. These three-stage diaphragm pumps are an excellent choice for continuous, contamination-free evacuation and pumping of non-aggressive gases at demanding vacuum conditions. They are especially suitable for applications requiring high volume flow in physics and analytics. The low ultimate vacuum makes these an attractive alternative to rotary vane pumps. Typical uses are as backing (roughing) pumps for turbomolecular drag pumps, for degassing of viscous media, as well as for exhaust gas analytics. Additionally, the VARIO® model provides vacuum control by precise adjustment of the diaphragm pump´s motor speed to process requirements. Back diffusion of oil or even oil back flow, e.g., into a high vacuum chamber is excluded due to its oil-free operation. For equipment manufacturers customized versions are available. Depending on the application the demand-responsive motor speed control of VARIO® models further extends the long diaphragm life for which VACUUBRAND pumps are well-known. In additon it provides an even higher pumping speed and enables precise vacuum control.

Technical data and graphs

Max. pumping speed 50 Hz 5.7 m3/h Select diagram
Max. pumping speed 60 Hz 3.4 cfm
Ultimate vacuum 1 mbar / 0.75 torr
Number of heads 4
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
Anschluss saugseitig small flange KF DN 16
Outlet connection Silencer / G1/4"
Rated motor power 0.53 kW
Protection class IP 20
Dimension L in mm 325 mm
Dimension W in mm 235 mm
Dimension H in mm 245 mm
Weight 19.1 kg
Noise level at 50 Hz, typ. 45 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, 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_pumpingcurve50 für Zoom klicken

Pump down graph 50 Hz (10 l volume)

Downloads

Please select a plug type to obtain its operating instructions.

Equipment

This might also interest you