Fluids - Identity Colors
Identifying colors used for fluid piping systems.
Identifying colors used for fluids transported in piping systems according ANSI A13.1 version 1996 and 2015 are indicated below.
ANSI A13.1-1996
| Fluid Service | Color Code |
|---|---|
| Material Inherently Hazardous | Yellow/Black |
| Flammable or Explosive Chemical Active or Toxic Extreme Temp. of Pressures Radioactive | Yellow/Black |
| Material of Inherently Low Hazard | Green/White |
| Liquid or Liquid Admixtures | Green/White |
| Material of Inherently Low Hazard | Blue/White |
| Gas or Gaseous Admixtures | Blue/White |
| Fire Quenching Fluids | Red/White |
| Water, Foam, CO2, Halon, etc | Red/White |
ANSI A13.1-2015
| Fluid Service | Color Code |
|---|---|
| Flammable & Oxidizing Fluids | Yellow/Black |
| Potable, Cooling, Boiler Feed & Other Waters | Green/White |
| Compressed Air | Blue/White |
| Fire Quenching Fluids | Red/White |
| Toxic and Corrosive Fluids | Orange/Black |
| Combustible Fluids | Brown/White |
| Defined by User | White/Black |
| Defined by User | Gray/White |
| Defined by User | Black/White |
Possible (not mandatory) use of color codes for different types of applications are indicated below.
| Color Code | ||
|---|---|---|
| Fluid | ANSI 13.1 - 1996 | ANSI 13.1 - 2015 |
| Acetic Acid | Yellow/Black | Orange/Black |
| Acetone | Yellow/Black | Yellow/Black |
| Acetylene Gas | Yellow/Black | Yellow/Black |
| Acid | Yellow/Black | Orange/Black |
| Air | Green/White | Blue/White |
| Alcohol | Yellow/Black | Yellow/Black |
| Alum | Green/White | |
| Ammonium Nitrate | Yellow/Black | Yellow/Black |
| Amyl Acetate | Yellow/Black | Yellow/Black |
| Antidote Gas | Blue/White | |
| Argon | Green/White | |
| Benzol | Yellow/Black | Yellow/Black |
| Bisulphite Liquor | Yellow/Black | Yellow/Black |
| Blau Gas | Yellow/Black | Yellow/Black |
| Bleach Liquor | Yellow/Black | Yellow/Black |
| Blow-off Water | Yellow/Black | Green/White |
| Boiler Feed Water | Yellow/Black | Green/White |
| Brine | Green/White | Green/White |
| Burner Gas | Yellow/Black | Brown/White |
| Butane | Yellow/Black | Brown/White |
| Butyl Alcohol | Yellow/Black | Yellow/Black |
| Calcium Chloride | Blue/White | Orange/Black |
| Carbon Bisulphide | Yellow/Black | Orange/Black |
| Carbon Dioxide | Yellow/Black | Orange/Black |
| Carbon Monoxide | Yellow/Black | Orange/Black |
| Carbonated Water | Green/White | Green/White |
| Caustic Soda | Yellow/Black | Orange/Black |
| Chlorine | Yellow/Black | Orange/Black |
| Chlorine Gas | Yellow/Black | Orange/Black |
| Chloroform | Yellow/Black | |
| Circulating Water | Green/White | Green/White |
| City Gas | Yellow/Black | Brown/White |
| City Water | Green/White | Green/White |
| Coal Gas | Yellow/Black | Brown/White |
| Cold Water | Green/White | Green/White |
| Compressed Air | Green/White | |
| Condensate | Yellow/Black | Green/White |
| Cooling Water | Green/White | Green/White |
| Cottonseed oil | Yellow/Black | |
| Cutting Oil | Green/White | |
| Diesel Oil | Yellow/Black | Brown/White |
| Distilled Water | Green/White | Green/White |
| Drain Oil | Yellow/Black | |
| Drain Water | Green/White | Green/White |
| Drinking Water | Green/White | Green/White |
| Dye | Yellow/Black | Orange/Black |
| Ethan Dye | Yellow/Black | Orange/Black |
| Exhaust Air | Green/White | |
| Exhaust Gas | Yellow/Black | |
| Exhaust System | Yellow/Black | |
| Filtered Water | Blue/White | Green/White |
| Fire Protection Water | Red/White | Red/White |
| Flue Gas | Yellow/Black | |
| Foamite | Red/White | |
| Formalin | Yellow/Black | |
| R-12 dichlorodifluoromethane | Green/White | |
| Fresh Water | Green/White | Green/White |
| Fuel Gas | Yellow/Black | Brown/White |
| Fuel oil | Yellow/Black | Brown/White |
| Gas | Yellow/Black | Brown/White |
| Gasoline | Yellow/Black | Brown/White |
| Glycerine | Green/White | |
| Heating Returns | Yellow/Black | Green/White |
| Heating Steam | Yellow/Black | |
| Helium | Green/White | |
| Hot Water | Yellow/Black | Green/White |
| Hydrochloric Acid | Yellow/Black | Orange/Black |
| Hydrogen | Yellow/Black | Yellow/Black |
| Hydrogen Peroxide | Yellow/Black | Orange/Black |
| Hydrogen Sulphide | Yellow/Black | Orange/Black |
| Industrial Water | Green/White | Green/White |
| Instrument Air | Green/White | Blue/White |
| Kerosone | Yellow/Black | Brown/White |
| Lacquer | Yellow/Black | Yellow/Black |
| Lactic Acid | Yellow/Black | Orange/Black |
| Linseed Oil | Yellow/Black | Yellow/Black |
| Lubricating Oil | Yellow/Black | |
| Make-up Water | Green/White | Green/White |
| Mercury | Yellow/Black | |
| Methyl Chloride | Yellow/Black | Orange/Black |
| Mixed Acid | Yellow/Black | Orange/Black |
| Mixed Gas | Yellow/Black | |
| Monoethanolamine | Green/White | |
| Muriatic Acid | Yellow/Black | Orange/Black |
| Naphtha | Yellow/Black | Yellow/Black |
| Natural Gas | Yellow/Black | Brown/White |
| Nitric Acid | Yellow/Black | Orange/Black |
| Nitrogen | Green/White | |
| Nitrogen Oxide | Yellow/Black | |
| Oil | Yellow/Black | Yellow/Black |
| Oil, lubricating | Yellow/Black | Yellow/Black |
| Oil, soluble | Yellow/Black | Yellow/Black |
| Oxygen | Yellow/Black | Yellow/Black |
| Paint | Yellow/Black | Yellow/Black |
| Peanut Oil | Yellow/Black | Yellow/Black |
| Phenol | Yellow/Black | Yellow/Black |
| Phenol | Yellow/Black | Yellow/Black |
| Process Gas | Yellow/Black | Yellow/Black |
| Producer Gas | Yellow/Black | Yellow/Black |
| Propane Gas | Yellow/Black | Brown/White |
| Raw Water | Green/White | Green/White |
| Refrigerated Water | Green/White | Green/White |
| River Water | Green/White | Green/White |
| Salt Water | Green/White | Green/White |
| Sanitary Sewer | Green/White | Green/White |
| Soda Ash | Green/White | Orange/Black |
| Solvent | Yellow/Black | Yellow/Black |
| Soybean Oil | Yellow/Black | Yellow/Black |
| Sprinkler Water | Red/White | Red/White |
| Steam | Yellow/Black | |
| Storm Sewer | Green/White | Green/White |
| Sugar Juice | Green/White | |
| Sulhur Chloride | Yellow/Black | Orange/Black |
| Sulphur Dioxide | Yellow/Black | Orange/Black |
| Sulphuric Acid | Yellow/Black | Orange/Black |
| Tar | Yellow/Black | |
| Toluene | Yellow/Black | Yellow/Black |
| Toluol | Yellow/Black | Yellow/Black |
| Trichlorethylene | Yellow/Black | Yellow/Black |
| Turpentine | Yellow/Black | Yellow/Black |
| Vapor | Yellow/Black | |
| Varnish | Yellow/Black | Yellow/Black |
| Vegetable Oil | Yellow/Black | Yellow/Black |
| Waste Water | Green/White | Green/White |
| Water | Green/White | Green/White |
| Water Gas | Yellow/Black | Brown/White |
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