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Home / WLF TheySaid / Old Color Coding for Thread Types.

  • 06/13/2017
  • T 2-8

I am looking for some information in regards to paint schemes for Appliances and couplings. (Color coding for thread types) As it pertains to FS Region 5 equipment.

I know Black was for NPSH (Iron Pipe) and Yellow was for NH (National Hose) but what color was used for Pacific coast thread types and what color was used for chemical thread types? I can’t find the information anywhere and I think it is valuable knowledge that seems to have been forgotten.


Thanks for any information anyone can provide!

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  1. Old Guy
    June 13, 2017 Reply

    Blue and green but I don’t remember which is which…..

  2. Shoe
    June 16, 2017 Reply

    Pacific was Green and Chemical was Blue……..

  3. Retired in Mo.
    June 20, 2017 Reply

    Shoe is right Pacific green Chemical blue. That was alot of years ago.

  4. lizardbitch
    August 1, 2017 Reply

    Gray was for garden hose.

  5. GB Bear 44
    September 2, 2017 Reply

    We still have a few pieces of old brass floating around at my station, mostly in my hose packs and brass box on the engine.

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