Machines and machine plants for the mechanical oil and fuel treatment, namely, Filter Coalescer Systems comprising valves, bilge water tank, sludge holding tank and filters and Oily Water Separator, for the power plant, the marine, petrochemical, chemical and metal processing industries, and their parts and accessories, namely, valves, bilge water tank, sludge holding tank, oil domes, filters, pumps, multi phase separators (MPS) in the nature of oil separators and solid particles separators, ...