Filter separator is a type of industrial filter that removes unwanted particles from natural gas as well as gas-oil before being injected in diesel combustion chamber. the advantage of separator filters to fuel filters is that they not only remove solid contamination such as sands, fumes and dust but also can remove unwanted liquid materials such as water, liquid hydrocarbon as well as very small iron sulfide and other sulfur contamination. filter separator has a small storage located on top to accumulate liquids.