Liquid ring pumps are ideally suited for use in a number of vacuum applications in power generation, all of which benefit from the performance characteristics of liquid ring vacuum pumps. Condenser air extraction and waterbox priming both contribute to increased efficiency of the power plant, whilst flue gas desulphurisation and fly ash handling are associated with treatment of the boiler exhaust gas. Edwards have developed a range of standard pump packages to meet the vacuum pumping requirements for each of these applications. The Edwards liquid ring pump range includes both one and two stage machines enabling optimum efficiency for processes operating across the vacuum range. Pump capacities up to 40,000 m3/h are available in one stage and 7,500 m3/h in two stage models.