  
The term flushing means the removal using fluid transport of contaminants of various natural bodies present within piping and/or equipment. To achieve this result the carrier fluid is released into circulation by means of suitable pumps to meet these conditions ensuring that certain turbulent flow conditions are met and are suitable for transporting contaminants. Flushing operations mainly involve hydraulic and lubrication circuit piping.
HVAC is an English abbreviation, widely used in all fields of industry, which stands for Heating, Ventilating and Air Conditioning.
