Marsh Industries Wash-down Separators are available in sizes from 2000 to 20000 litres. They safely remove silt and debris from vehicle washdown areas. These units are primarily used in vehicle wash bays or cleaning facilities where the effluent must be discharged to the foul water drainage system. It is a legal requirement to install a wash-down separators on commercial sites where vehicle wash-down and cleaning is being used. All tanks structures come with 25 year guarantee and easy access lids. Please call or email for more details on tank sizing.