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Oil-Free Non-chemistry Diaphragm Pumps

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Product and ordering information for Oil-free Non-chemistry Diaphragm Pumps.  For non-corrosive, non-evaporative applications. Low maintenance & high reliability.  Vacuum from 100-0.5 mbar. Free Air Capacity of 0.5-4.8 cfm.

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Catalog #   Category:
   
  • Description
  • Product No. & Specs
  • Selection Chart
  • FAQs
  • Tech Info
  • Accessories & Parts
  • Literature

Product Description

VACUUBRAND® Oil-free Non-chemistry Diaphragm Pumps are designed specifically for non-corrosive, non-evaporative applications. This line of aluminum-FKM diaphragm pumps are an excellent choice for a wide range of laboratory and process plant vacuum applications.

Product Features:

  • No Oil Changes
    These vacuum pumps utilize diaphragm vacuum technology. The totally dry operation eliminates the misting, handling and disposal of contaminated waste associated with rotary vane pumps. No oil to change or monitor!
  • Reduced Maintenance
    Typical diaphragm lifetimes are well in excess of 15,000 hours of use before replacement - that's years in most applications, minimizing downtime and service costs. When it is finally time for service, their unique design eliminates tedious, trial-and-error stroke length recalibration.
  • Improved Productivity
    VACUUBRAND® pumps are engineered for performance, with flow rates as much as 40% higher at working vacuum level than competitive pumps with similar free air capacity ratings. Higher flow rates mean reduced process times and higher throughput.
  • Reliability
    All VACUUBRAND® pumps and systems must pass rigorous product testing before leaving the factory. It's your assurance of a reliable pump.



 Model
Ultimate Vacuum
Free Air Capacity
at 60Hz
Cat. No.*
mbar
torr
cfm
lpm
 ME1
100
75
0.5
14
721003
 ME2 NT
70
52
1.3
37
730003
 ME4 NT
70
52
2.6
73
731003
 ME8 NT
70
52
4.8
135
734003
 MZ2 NT
7
5.2
1.4
40
732003
 MZ2D NT
4
3
1.5
42
732203
 MD1
 (100-120V/200-230V, 50-60Hz)
1.5
1.1
0.8
23
696087
 MD4 NT
 (100-120V/200-230V, 50-60Hz)
1
0.75
2.5
72
736005
 MV2 NT
0.5
0.4
1.4
40
738003

*All pumps 120V, 60Hz unless noted. Dual voltage pumps require purchase of power cord.

Vacuum Unit Conversion Calculator

Oil-Free Non-chemistry Diaphragm Vacuum Pumps

 Ultimate 
Vacuum
 Applications
 Pump Model 
 Free Air Flow 
Down to
 70 mbar
  • Aqueous vacuum filtration
  • Drying Chamber
  • Pressure Filtration
ME1
ME2 NT
ME4 NT
ME8 NT
0.5 cfm
1.3 cfm
2.6 cfm
4.8 cfm
Down to
 4 mbar
  • Aqueous vacuum filtration
  • Drying Chamber
  • Backing of wide-range Turbo pumps (MZ 2D NT) 
MZ2 NT
MZ2D NT
1.4 cfm
1.5 cfm
Down to
 1 mbar
  • Drying chamber
  • Degassing of viscuos media
  • Backing of wide-range Turbo pumps
MD1
MD4 NT
0.8 cfm
2.5 cfm
Down to
 0.3 mbar
  • Drying Chamber
  • Fast evacuation of larger volumina
  • Backing of wide-range Turbo pumps
MV2 NT
1.4 cfm

Unit Conversion Calculator

Not sure which vacuum pump is best for your application? This handy web application can recommend the best VACUUBRAND® vacuum pump or vacuum pump system for a wide range of applications, including rotary evaporation, centrifugal concentration, and more: Vacuum Pump Selection Guide

Which of your gauges should I choose for my vacuum pump?

In general, our DVR2 gauge works well with nearly all of our diaphragm pumps. However, for four stage pumps (MV series), like the MV2 NT, or MV10C, the DCP3000 + VSK3000 will be able to register the deeper vacuum provided by these pumps. The DCP3000 + VSP3000 can also be chosen for the ability to mount the gauge head separately from the display or because it uses line current rather than battery power. The DCP3000 + VSP3000 or VACUU-VIEW extended are excellent choices for rotary vane pumps and roots pumps.

Can I retrofit a stand/catchpots/condensers/controllers to my pump?

Unfortunately it is not possible to retrofit solvent recovery glassware to our pumps. However we do offer controllers that will work with your diaphragm or rotary vane vacuum pump, regardless of manufacturer.

Why do I need a separate solenoid valve and vacuum fitting for my CVC3000 controller?

Because the CVC3000 is designed to be operated with a huge span of vacuum pumps, we offer several different valves to go with it. Having a separate valve and vacuum fitting also allows the controller and valve to be located at their optimal positions for best vacuum control, and not just what is convenient for the controller. Additionally, while controllers that shut the pump off to control vacuum are less expensive, they can allow condensation inside the pump and produce additional strain on the pump upon restart.
If you would like to purchase a controller with the solenoid valve attached as a single unit, consider the CVC3000 detect.

My application requires 27 inches of mercury. All your measurements are in millibar. What pump do I need?

Relative inches of mercury is a unit that references atmospheric pressure, which literally is as variable as the weather. While accurate enough for fluid movement applications, it's a poor unit to use for most lab applications. Our Vacuum Pump Selection Guide contains a vacuum unit calculator that will convert these units, assuming standard atmospheric pressure of 760 torr. 27 inches of mercury translates to approximately 100 mbar. Our ME series single stage diaphragm pumps would be able to achieve that vacuum level.

Can you cross Pump X from Supplier Y to one of your diaphragm pumps?

It depends. For certain applications, like freeze drying, diaphragm pumps can not achieve the ultimate vacuum required to perform the task. In these cases, we can suggest our low-maintenance RC6 chemistry-Hybrid pump as an alternative. However, for most laboratory applications, selecting the best pump for an application requires a bit more information that just telling which rotary vane pump you used to use, so that you dont pay more than you need to, but get the correct accessories as well. Try our Vacuum Pump Selection Guide, or call our Customer Service department to get a customized recommendation for your application.

How do I select a cold trap coolant?

To select the proper coolant for your cold trap, you need to consider several things:

  • The temperature of the coolant
  • Your pump - in particular the vacuum level at which it operates,
  • The vapor pressure of your solvent at the temperature of your coolant.

For example, dry ice has a temperature of -78.5°C. Acetone has a vapor pressure at that temperature of approximately 0.5mbar. So, when operated with a two-stage rotary vane pump, with an ultimate vacuum of approximately 0.001mbar, a dry ice trap would not be effective. A better choice would be liquid nitrogen, with a temperature of -196°C.
Of course, a dual-stage rotary vane pump would be overkill to evaporate acetone. If a single-stage diaphragm pump, with an ultimate vacuum of 70mbar was used to evaporate acetone, a dry ice trap would be considerably more effective.
To know whether your cold trap is being effective or not, the efficiency can be calculated by weighing your sample before and after drying to determine the mass of the evaporated solvent. This can be compared to the mass of the liquid collected in the cold trap. All of the solvent that is not collected in the cold trap can be assumed to enter the pump. In the case of a rotary vane pump, it can be assumed to be contaminating the oil.

What service kit do I need for my VACUUBRAND®-manufactured pump?

Please refer to the table below:

 Pump Model
Service Kit Catalog #
  ME1, ME1C (diaphragm key included)
696874
  ME2 NT
696877
  ME4 NT, MZ2 NT, MZ2 NT VARIO
696860
  ME8 NT
696810
  MD1 (diaphragm key included)
696824
  MD4 NT, MV2 NT, MD4 NT VARIO,
  MV2 NT VARIO
696861
  ME2C NT
696878
  ME4C NT
696864
  ME8C NT
696867
  MZ1C
696876
  MZ2C NT, MZ2C NT VARIO, PC101 NT,
  PC5xx NT, PC3002 VARIO
696869
  MD1C, PC3001 VARIO (diaphragm key
  included)
696828
  MD4C NT, MD4C NT VARIO, PC201 NT,
  PC6xx NT , PC3003, PC3004 VARIO
696870

If you don't see your pump on this list, call BrandTech Customer Service.

What do I need to order to fit a hose barb on my vacuum pump?

Please refer to the table below for the parts required:

Pump Model
Hose
 Inner Diameter 
Aluminum,
Small Flange
 w/ hose nozzle 
Cat. No.
Polypropylene,
Small Flange
 w/ hose nozzle 
Cat. No.
 Clamping 
Ring
Cat. No.
Trapped O-Ring
Centering Ring
Cat. No.
MD4 NT,
MZ2D NT
1/4"
(6mm)
662510
-
660000
660190
MD4 NT,
MZ2D NT
3/8"
(10mm)
662511
662806
660000
660190

If you don't see your pump on this list, call BrandTech Customer Service.

BrandTech® Scientific offers parts and accessories for Vacuubrand® Oil-free Non-chemistry Diaphragm Vacuum Pumps such as:

To order click here