The Edwards ES range of pumps represents the advanced single stage oil sealed rotary vane pumps. The pump mechanism has been refined to produce a better quality of vacuum. The vacuum performance is highly stable, without any of the pressure fluctuations that are often seen in single stage pumps thanks to the optimised oil return system, improving product quality and giving consistent process results. Extended service intervals and easy in house maintenance make the ES range a flexible vacuum solution for a wide range of industrial applications. They can be used individually or with mechanical booster pumps to increase both performance and ultimate vacuum.