Pipe Marking Standards
PIPE MARKING ANSI/ASME A13.1 2007 Standard Color Chart HYDROGEN- FLAMMABLE Black on Yellow ACETIC ACID COMBUSTIBLE White on Brown NITRIC ACID TOXIC/CORROSIVE Black on Orange FIRE WATER FIRE QUENCHING White on Red OTHER WATER BOILED WATER = White on Green COMPRESSED AIR NITROGEN - White on Blue Any vapor or gas under pressure that does not fit a category above White on Black White on Gray White on Purple Black on White MARKE Pipe Marker Placement MARKER ARKER MARKER MARKER Every 25'-50' on straight runs is typical Label placement in relation to point of normal approach Adjacent to changes in direction Size Chart Outside pipe | Minimum diameter Min. Length field color height letter MARKER - MARKER w/ cover MARKER .75" - 1.25" 8" .5" 1.5" - 2" 8" .75" Adjacent to all valves & flanges Both sides of floor/ wall penetrations 2.5" - 6" 12" 1.25" 8" - 10" 24" 2.5" Over 10" 32" 3.5" Print Your Ouwn Pipe Markers HEAT PUMP EAT PUMP NEAT Call Today to Start Printing Your Own Pipe Markers! GRAPHIC PRODUCTS INST. AIR 888.326.9244 • GraphicProducts.com -MARKER MARKER MARKER GAS
Pipe Marking Standards
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