E2M -Medium and Large Rotary Vane
EM Series pumps are rugged, mechanical oil-sealed pumps in a compact and quiet design. They feature advanced lubrication circuits, high reliability, and accessories to suit your specific application needs.
Ideal for dealing with extreme gaseous environments such as metallurgy, pharmaceutical freeze drying or refrigeration system evacuation, the EM series is the industry standard for zero contamination of process and effective lubrication under high gas loads.
Pumping Speeds
40, 80, 175, 275 m3/h
Final Pressure
Up to 1x10-3 mbar
Special Versions
Atex, Fomblin, PFPE
Silent
With only 65 dB(A) and very low vibration levels.
1x10-3mbar
Performance
Excellent vacuum levels, even with Gas Ballast.
Compact
Unrivalled pumping speeds in the most compact package
All Conditions
Positive pressure oil lubrication system for effective cooling and lubrication under all conditions.
Gas Ballast
With up to 700 g/h of vapour pumping capability and flexibility for your process.
Simple Maintenance
Preventive service can be carried out using simple workshop tools.
Peak pumping speed
Ultimate vacuum
Ultimate vacuum w/ gas ballast
Max water vapour pumping rate
Noise level
m3/h
mbar
mbar
Kg/h
dBA
E2M40
37
0.001
0.007
0.2
65
E2M80
74
0.001
0.007
0.3
70
E2M175
160
0.007
0.001
2.4
75
E2M275
255
0.005
0.001
2.5
75
E2M series two stage oil sealed rotary vane vacuum pumps are renowed for their ultimate vacuum, rapid pumping speed, quiet operation and ability to handle water vapour. There 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.
Internal classification of Ex II 3 G c IIB T4.
The motor is enclosed and cooled by the motor-cooling fan and overheating protection is provided via a thermal overload device. Your EM pump is intelligent too. It automatically resets and restarts the pump when the motor cools down. No manual intervention is required.
Installation is relatively simple with no customer wiring required - they come equipped with an integral IEC connector. The alternate side inlet connection port also allows you to install in height-restricted areas.
Vapours condensing in pump oil leads to poor lubrication, increased wear of moving parts and loss of vacuum performance.
The EM is designed to run hot and has a two open position gas ballast valve to allow the highest gas ballast flowrates of any similar sized pump. The EM pump has great flexibility to operate on applications as a high-vacuum mode or as a high-throughput mode.
All two-stage pumps have to "compromise" the oil lubrication system to achieve good ultimate vacuum, but if the pump is operated at high inlet pressure or with high vapour loads, the high vacuum stage will suffer from oil starvation and high rates of condensation of vapours in the oil. Edwards unique "Mode Selector Switch", in combination with gas ballast position GB2, allows the pump to handle the highest vapour loads of any pump in its class without any wear or loss of lubrication.
1. without gas ballast 2. with gas ballast
1. without gas ballast 2. with gas ballast
Edwards provides a full range of highly-quality accessories specifically designed for the unique EM pump. The right accessories, used in the right way, can maximise the reliability and intervals between oil changes and services, and are designed to keep the performance of the EM pump at a maximum.
Documentation
