COLOUR CODE FOR PIPING SYSTEMS ACCORDING TO ISO 14726
System
Colour
RAL NO.( DIN 2403 )
Black water
Black / blue (ring)
9005 / 5015
Waste oil
Black / brown (ring)
9005 / 8001
Bilge water
Black / green (ring)
9005 / 6018
Grey water
Black / white (ring)
9005
Sanitary discharge / Sewage
Black / yellow (ring)
9005 / 1021
Fresh water, sanitary
Blue / brown (ring)
5015 / 8001
Cooling fresh water
Blue / violet (ring)
5015 / 4001
Fuel
Brown
8001
Heavy fuel (HFO)
Brown / black (ring)
8001 / 9005
Diesel fuel (MDO)
Brown / yellow (ring)
8001 / 1021
Sea water, sanitary
Green / brown (ring)
6018 / 8001
Ballast water
Green / violet (ring)
6018 / 4001
Cooling sea water
Green / yellow (ring)
6018 / 1021
Compressed air LP
Grey / orange (ring)
7001 / 2003
Compressed air HP
Grey / red (ring)
7001 / 3000
Oil other than fuel
Orange
2003
Thermal oil
Orange / blue (ring)
2003 / 5015
Hydraulic oil
Orange / grey (ring)
2003 / 7001
Lubricating oil
Orange / green (ring)
2003 / 6018
Fire fighting
Red
3000
Fixed fire extinguishing system
Red / grey (ring)
3000 / 7001
Fire fighting foam
Red / yellow (ring)
3000 / 1021
/ 9010