Contact Us:
(732) 765-0900



Edwards E2M40 Rotary Vane Dual Stage Mechanical Vacuum Pump

Edwards E2M40 Rotary Vane Dual Stage Mechanical Vacuum Pump, 200/380-440 50Hz, 208-230/440-480V 60Hz, IE3 EU/US

Edwards E2M series two stage oil sealed rotary vane vacuum pumps are renowned for their high ultimate vacuum, rapid pumping speeds, quiet operation and ability to handle water vapor. These direct drive rotary vane pumps are inherently compact and vibration free, and with their finger-proof fan and coupling housings they offer excellent operator protection.

A comprehensive range of accessories is available to allow use on a wide variety of vacuum applications

Edwards E2M40 Rotary Vane Description

–  Reliable and stable process – effective lubrication even under high gas loads.
–  No contamination of process – oil and air suck‑back protection.
–   Long and trouble free life – industrial roller bearings on drive shaft.
–  Peace of mind – tried, tested and industry standard for years.
–  Reliable and stable – high vacuum performance.

These Edwards E2M40 direct drive rotary vane pumps are inherently compact and vibration free with an ultimate pressure of 7.7×10-4 Torr and a pumping speed of 25.9 CFM at 60 Hz. These Edwards E2M40 vacuum pump offers a finger-proof coupling housing and totally enclosed fan-cooled motors, which provide excellent operator protection. The Edwards E2M40’s give the best combination of performance, reliability, and cost in their class.

The Edwards E2M40 dual stage rotary vane mechanical vacuum pumps have an advanced oil lubrication circuit and are very reliable with accessories to match any application. Applications include use with refrigeration dehydration, brake line evacuation, thin film coating, vacuum distillation, freeze drying, space simulation and other chemical processes. These brand new Edwards E2M40 dual stage rotary vane pumps comes with an Edwards manufacturer’s warranty. Oil and accessories are also available. Part number A36404940


  • Type of Product: Rotary Vane Pump
  • Manufacturer: Edwards
  • Part number: A36404940


Reliable system protection devices

Every pump has protection devices to prevent oil and air suck-back into the vacuum system if the pump stops while under vacuum. A variety of protection devices are used, depending on the pump size and cost, but emphasis is always placed on reliability and simplicity. When you use gas ballast on some of the pumps, you must use a solenoid operated gas ballast control valve to prevent air suck-back.

Positive Pressure Oil Lubrication

The EM pumps incorporate a well proven positive pressure oil lubrication system which as been developed by Edwards to ensure correct lubrication in all duty modes and particularly to prevent oil starvation with high gas loads.

An integral oil pump ensures that a more than adequate oil flow is pumped throughout the stator/rotor assembly at all times.

This oil lubrication system means that the level of oil in the reservoir is less critical than with other pump designs. All pumps can operate with oil levels as low as 50-70% of the maximum. A full length, easily visible oil level sight glass allows you to conveniently monitor the oil level.

Gas Ballast Facility

The EM pumps have a gas ballast valve. The valve is used to introduce a suitable gas into the stator during the compression stage: this prevents condensation of vapors inside the pump, dilutes and ejects corrosive gases and purges the oil of gases and vapors. Therefore, the use of gas ballast reduces oil degradation and pump corrosion.

Low Noise Levels

The EM pumps maintain Edwards’s reputation for quiet operation pumps with a typical noise level of 65dB(A).

Pumping Systems

The EM pumps, with suitable accessories, can partner a variety of other types of pump in vacuum systems for industry and for research. A special feature of the E2M40 is the central vacuum inlet which enables you to fit a mechanical booster pump with a minimum overhang, to create compact combination pumping systems.

Easy Maintenance
The advanced lubrication system allows the EM pumps to work with wide oil level tolerances, which reduce the need to top-up the oil.
All EM pumps are constructed with internal dowels, which reduce the need for skilled setting of tolerances, when the pump is dismantled. The pumps are designed so that all key components are easily accessible. The exhaust valve seals and oil distributor seals are exposed after the top cover is removed. The shaft seal can be replaced quickly without stripping down the pump.

Edwards Pump Applications

  • Vacuum metallurgy processes
  • Thin film coating technologies
  • Pharmaceutical freeze drying
  • Refrigeration and air conditioning system evacuation, drying, and backfilling
  • Transformer and cable drying and impregnation, insulating oil treatment plant
  • Lamp manufacture
  • Cryogenic vessel evacuation
  • Vacuum drying and distillation in chemical industries
  • Semiconductor device manufacture
  • Backing pump for high vacuum applications
Use this resource to help determine the pumping speed you need.

Technical Specifications

50Hz 42.5 m3h-1 / 25 ft3min-1
60Hz 50.5 m3h-1 / 29.7 ft3min-1
Speed (Pneurop)
50Hz 37 m3h-1 / 21.8 ft3min-1
60Hz 44 m3h-1 / 25.9 ft3min-1
Number of stages 2
Ultimate vacuum
Without gas ballast (total pressure) 1 x 10-3 mbar / 7.7 x 10-4 Torr
With gas ballast (partial pressure) 5 x 10-3 mbar / 3.8 x 10-3 Torr
Ultimate with Fomblin®
Without gas ballast 1 x 10-2 mbar / 7.7 x 10-3 Torr
Inlet connection ISO40
Outlet connection 25 mm flange suitable for NW25
Max outlet pressure 0.5 bar gauge
Max inlet pressure for water vapour 7 mbar / 5.3 Torr
Max water vapour pumping rate 0.2 kg h-1 / 0.4 lb h-1
Weight 75 kg / 165 lb
Motor protection rating IP55
Motor power
50Hz 1.1 kW / 1.5 hp
60Hz 1.5 kW / 2 hp
Standard oil capacity
maximum 4 litre
minimum 2.2 litre
PFPE oil capacity
maximum 4 litre
minimum 2.2 litre
Recommended oil Ultragrade 70
PFPE prepared version Fomblin® Y06/6
Noise level 65 dB (A)

Hydrocarbon Prepared – HC
Standard pump for use with Ultragrade oil. Oil supplied with the pump

Azide Compatible – AZ
Similar to hydrocarbon pumps but with copper and brass parts replaced with other suitable materials such as stainless steel. Supplied with Ultragrade oil.

PFPE Prepared – FX
These pumps are assembled and tested using PFPE fluid. PFPE (Fomblin®) to be purchased separately


1. Without gas ballast 2. With gas ballast



  • KIT001354


  • KIT001351

KIT E1/2M40/80 – 3000 HR SERVICE

  • KIT001350


User Manual Data Sheet 

For more documentation, please visit DigiVac’s folder.

Product Inquiry

Edwards E2M40 Rotary Vane Dual Stage Mechanical Vacuum Pump | 25.9 CFM