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  2. Hose coupling - Wikipedia

    en.wikipedia.org/wiki/Hose_coupling

    This coupling is used by Spanish firefighters, and is defined by Spanish Standard UNE 23400. [15] It is a sexless coupling with three engaging lugs, and is available in several different sizes, including Barcelona 25 (25 mm hose ID), Barcelona 45 (45 mm hose ID), and Barcelona 70 (70 mm hose ID). Suitable for delivery (pressure) only, not suction.

  3. North American Fire Hose Coupler Incompatibilities - Wikipedia

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

    NFPA 1963, which defines the vast majority of fire hose couplings in existence, and ANSI-ASME B1.20.7, which defines garden hose thread (sometimes used by wildland fire fighting crews) along with (non-tapered) iron pipe thread, and ANSI B26, FIRE-HOSE COUPLING SCREW THREAD FOR ALL CONNECTIONS HAVING NOMINAL INSIDE DIAMETERS OF 2 1 ⁄ 2, 3, 3 1 ...

  4. Barrel threads - Wikipedia

    en.wikipedia.org/wiki/Barrel_threads

    Clamp coupling. [52] The clamping section is 36.5 mm long. The clamping portion of the 202 is somewhat shorter, such that 200 STR barrels can be used in the 202 without modifications (but not necessarily the other way around). 1.063" Sauer 303 ⌀__mm N/A N/A Clamp coupling. Sauer 404 ⌀__mm N/A N/A Clamp coupling. Jalonen JJ-92A [15] M27 1.5 ...

  5. National pipe thread - Wikipedia

    en.wikipedia.org/wiki/National_pipe_thread

    Threaded pipe and elbow.The pipe has a male NPT thread, while the elbow is female.. American National Standard Pipe Thread standards, often called national pipe thread standards for short, are United States national technical standards for screw threads used on threaded pipes and pipe fittings.

  6. Piping and plumbing fitting - Wikipedia

    en.wikipedia.org/wiki/Piping_and_plumbing_fitting

    Crosses, also known as four-way fittings or cross branch lines, have one inlet and three outlets (or vice versa), and often have a solvent-welded sockets or female-threaded ends. Cross fittings may stress pipes as temperatures change because they are at the center of four connection points.

  7. Coupling - Wikipedia

    en.wikipedia.org/wiki/Coupling

    An improvised flexible coupling made of car tyre pieces connects the drive shafts of an engine and a water pump. This one is used to cancel out misalignment and dampen vibrations. Rotating coupling. A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power. The primary purpose of couplings is ...

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