PIPE IDENTIFICATION Carbon Dioxide Fire Service Water
ORANGE Acetylene Acetylene Blast Furnace Gas B.F. Gas Gasoline Gasoline Grease Grease Hydrogen Hydrogen Oxygen Oxygen Oil Oil Tar Tar Producer Gas Producer Gas Liquid Petroleum Gas LPG Oil and Water Oil and Water Vacuum-High High Vacuum YELLOW
Acid H.P. Air Ammonia H.P. Steam L.P. Steam Boiler Feed Water Hot Water H.P. Water
GREEN Air-Low Pressure Argon-Low Pressure Helium-Low Pressure Nitrogen-Low Pressure Water-Cold Water-Distilled Water-Low Pressure Water-Treated Oil and Water
L.P. Air L.P. Argon L.P. Helium L.P. Nitrogen Cold Water Distilled Water L.P. Water Treated Water Oil and Water
IDENTIFICATION OF PIPE BY COLOR NBC Amended Rules and Regulation (PD 1096) Rule XIII Electrical and Mechanical Regulations COLOR CODING OF PIPING NATIONAL BUILDING CODE (Rule X – Mechanical Regulations) pp196 DIVISION Steam
Water
Oil
DESIGNATION
COLOR
High Pressure WHITE Exhaust System BUFF H.P. & L.P. Fresh Water BLUE Salt Water GREEN
Delivery BRASS BRONZE Discharge YELLOW
Pneumatic
All Piping
GRAY
Gas All Piping BLACK Fuel Oil All Piping Refrigeration Pipes and Fittings