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  2. Copper tubing - Wikipedia

    en.wikipedia.org/wiki/Copper_tubing

    Type K 12 inch, type L 12 inch, and type D 5 ⁄ 8 inch ACR all have the same outside diameter of 5 ⁄ 8 inch. In both the U.S. and Canada, copper pipe and fittings are sold in imperial units only as metric sizes are not manufactured for use in North America. [ 6 ]

  3. National pipe thread - Wikipedia

    en.wikipedia.org/wiki/National_pipe_thread

    For various rigid mechanical uses ... 3 + 12, 4, 5, and 6 inch, as pipe and fittings by most US suppliers. ... Length L 2 Turns Diameter E 2; inch inch1 inch ...

  4. Piping and plumbing fitting - Wikipedia

    en.wikipedia.org/wiki/Piping_and_plumbing_fitting

    Copper fittings for soldered joints Pipe fittings: 1) Copper (solder); 2) Iron ... An example of this is a "3 ⁄ 4-inch ... and a rigid coupling does not allow ...

  5. Hose coupling - Wikipedia

    en.wikipedia.org/wiki/Hose_coupling

    Norway uses NOR fittings for attack hoses. They come in three sizes: NOR 1 (83 or 84 mm; 2 + 12-inch), NOR 2 (65 or 66 mm; 2"), and NOR 3 (50 or 55 mm; 1 + 12-inch). NOR 2 is mostly used in the maritime and offshore oil industry.

  6. North American Fire Hose Coupler Incompatibilities - Wikipedia

    en.wikipedia.org/wiki/North_American_Fire_Hose...

    At its annual convention at Dallas, TX, the NFPA formally adopted a standard with 2 + 12-inch hose with 7.5 threads per inch as the primary standard, with additional sizes of 3 and 3.5 inches (each with 6 threads per inch) and a 4.5 inch coupling with 4 threads per inch, with the fire hydrant standard specifying one 4.5 inch port and two 2 ...

  7. AN thread - Wikipedia

    en.wikipedia.org/wiki/AN_thread

    AN sizes range from -2 (dash two) to -32 in irregular steps, with each step equating to the OD (outside diameter) of the tubing in 1 ⁄ 16-inch increments. Therefore, a -8 AN size would be equal to 12 -inch OD tube.