Fujikin FCS-4WS-798-F30#B Mass Flow Controller MFC NF3 Nikon NSR Series Working. Removed from a Nikon NSR Series System. This Fujikin FCS-4WS-798-F30#B Mass Flow Controller MFC NF3 Nikon NSR Series is used working surplus. Only items pictured are included: If a part is not pictured, or mentioned above, then it is not included in the sale. Pictured test equipment is not included or available for sale. For items with multiple quantities: The pictured item is not necessarily the one that will be sent. Serial numbers or country of manufacture may vary.