Edwards E2M40 Rotary Vane Dual Stage Mechanical Vacuum Pump

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.