IS-2379 Color Codes for General Services

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Contents Ground Colour First Colour Band Second Colour Band
Cooling Water Sea green French blue
Boiler feed water Sea green Gulf red
Condensate Sea green Light brown
Drinking Water Sea green French blue Signal red
Treated Water Spa green Light orange
Fire water Fire red Crimson red
Central heating below 60°C Sea green Canary yellow
Central heating 60°C to 100°C Sea green Dark violet
Central heating above 100°C Sea green Dark violet Signal red
Cold water down service from storage tanks Sea green French blue Canary yellow
Domestic, hot Water Sea green Light grey
Hydraulic power Water Sea green Black
Sea, river, untreated Water Sea green White
Filtered water Sea green Light brown
Soft water Sea green Light brown Signal red
Warm water Sea green Light grey Canary yellow
Chilled water Sea green Black Canary yellow
Sprinkle and hydrant water Sea green White Signal red
Waste water Sea green Canary yellow Signal red
Compressed air, up to and including 15 kg/cm’ Sky blue
Compressed to over 15 kg/cm’ Sky blue Signal red
Plant air Sky blue Silver grey
Instrument air Sky blue French blue
Dry vacuum White
Wet vacuum White Dark violet
Very high pressure steam Aluminium to IS 2339 Signal red
High pressure steam Aluminium to IS 2339 French blue
Medium pressure steam Aluminium to IS 2339 Gulf red
Low pressure steam Aluminium to IS 2339 Canary yellow
Drainage Black
Town gas Canary yellow
Light diesel fuel Light brown Brilpant green
High speed diesel fuel, Light brown
Paraffin oil . Light brown Signal red
Quenching oil Light brown Canary yellow
Furnace fuel Light brown French blue
Lubricating oil Light brown Light grey
Hydraulic power Light brown Dark violet
Transformer oil Light brown Light orange