Condensate when discharged from higher pressure to lower pressure, the difference in the sensible heats at the two pressures causes certain amount of Condensate to again convert to Steam known and referred to as Flash Steam. This is as good as dry steam, albeit at lower pressure, and can be utilized as such.This separation can be done by allowing the hot condensate to discharge into a vessel of a pre determined volume, to get the desired amount of condensate and Flash at a specific pressure. This vessel is known as a Flash vessel.