Better vacuum levels result in better end-product quality for many customers thanks to lower contamination levels and/or lower product processing temperatures that help preserve the properties of the raw material.
Repeatable vacuum performance is desirable for any production environment. Factors like oil/water temperature or condition, that are necessary in oil-sealed and liquid ring vacuum pumps as a sealant for the compression mechanism, do not affect dry running vacuum pumps.

The rotors of the EDS industrial dry vacuum pump are simply supported by bearings at both ends of the rotor. This more robust double-ended shaft support provides a secure rotor support and superior strength when handling build-up of process contaminants, and increased ability to be able to flush clean the pumping mechanism during process or at the end of a process.
The EDS patented screw rotor design provides a stable thermal distribution during the path of compression, and allows internal temperature control to avoid condensation and polymerisation of process material. The two rotors are coupled by simple gears.

The EDS achieves very low noise and vibration levels, which is a benefit to the surrounding environment, in addition to ocuppying a very reduced footprint. Its motor size allows for sufficient power during start-up and becomes very efficient at low pressures, and the stand-by mode allows to keep the pump running between process batches with power consumptions below 1kW even with the booster combination, while using minimal cooling water and purge gas.

Thanks to the robust design and double-ended support of the rotors, the EDS internal mechanism can be cleaned during a process or at the end of a process batch to remove process material even for the harshest processes. The pump can be flushed or soaked automatically without the need for manual internal cleaning of the rotors and stators.

Edwards has developed proprietary sealing mechanisms for all of its dry pumps and provide the most effective vacuum pump sealing technologies in the market. Sealing of the oil box and bearings is provided by a combination of internal elements and the purging of seals with Nitrogen of CDA (clean dry air).

Unlike other pumps, the supply of purge gas is a non-critical element on the EDS, meaning that the occasional failure of reduction of purge gas flow will not result in damaged electronics or motors.

We have the capability to supply individual vacuum pumps and complete turnkey vacuum systems including hardware, controls and expert technical and service support.
In the simplest expression, the EDS industrial dry vacuum pump can be supplied as a primary pump only or in combination with a booster pump in a compact footprint.