GSF SW Cooling Green Yellow Green SW Circulating Green Grey Green Sanitary SW Supply Green Brown Green SW Fire Main Red Green Red SW Deluge Red Orange Red Ballast Green Violet Green Bilge Water Black Green Black Potable Water Blue Green Blue Chilled FW Blue White Blue Sanitary FW Blue Brown Blue Water Mist Fire Ext. Blue Red Blue Treated FW Cooling Blue Violet Blue Corrosion Inhibitor Violet Yellow Violet Deck Drain (Clean) Black Violet Black Deck Drain (Dirty) Black Maroon Black Grey Water Black White Black Refrigerant Grey Maroon Grey Urea Violet Black Violet Crank Case Vents Black Orange Black Exhaust Gas Black Grey Black Treated Sewage Black Blue Black Contaminated Sewage Black Yellow Black Engine Lube Oil Orange Yellow Orange