Ecodyne Oil Removal Systems, formerly known as Absolute Filtration Industries Corporation (AFIC), is the manufacturer of the acclaimed HYDROFLOW? "Walnut Shell Filter". We also manufacture the STAGE? "Skim Tank Augmented by Gas Eductor System" which is used in front of the HYDROFLOW? to remove light and heavy contaminates; and FLOWGUARD? "Automatic Backwashable Filter (ABC) filter", which is used after the HYDROFLOW? for fine filtration.