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2. AN thread - Wikipedia

   en.wikipedia.org/wiki/AN_thread

   A 37° flare type end fitting for flexible hose. The AN thread (also A-N) is a particular type of fitting used to connect flexible hoses and rigid metal tubing that carry fluid. It is a US military-derived specification that dates back to World War II and stems from a joint standard agreed upon by the Army Air Corps and Navy, hence AN.

3. Piping and plumbing fitting - Wikipedia

   en.wikipedia.org/wiki/Piping_and_plumbing_fitting

   A barb (or hose barb), which connects flexible hose or tubing to pipes, typically has a male-threaded end which mates with female threads. The other end of the fitting has a single- or multi-barbed tube—a long tapered cone with ridges, which is inserted into a flexible hose.

4. North American Fire Hose Coupler Incompatibilities - Wikipedia

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

   1-inch hose with 1-8 NH NFPA threads (NFPA 1963 requirement; a.k.a. "Chemical Hose Thread" and "Booster Hose Thread" [7]; the chemical hose thread term likely originates from its use on chemical fire engines, an early firefighting device used from 1872 until the 1930s that used a combination of bicarbonate of soda and sulfuric acid to force ...

5. Hose coupling - Wikipedia

   en.wikipedia.org/wiki/Hose_coupling

   Storz couplings are available in several sizes, supporting hoses with an internal diameter of between 12 and 250 mm, and are specified by DIN standards 14301, 14321, 14322, and 14323 (hose couplings); DIN standards 14306, 14307, 14308, and 14309 (threaded adapters); DIN standards 14341, 14342, and 14343 (swivel reducers); and DIN standards ...

6. Coupling (piping) - Wikipedia

   en.wikipedia.org/wiki/Coupling_(piping)

   Pipe coupling (copper sweat) In piping and plumbing, a coupling (or coupler) is a very short length of pipe or tube, with a socket at one or both ends that allows two pipes or tubes to be joined, welded (), brazed or soldered (copper, brass etc.) together.

7. Glossary of firefighting equipment - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_firefighting...

   Adapter Fitting for connecting hose couplings with dissimilar threads but with the same inside diameter. [1] See also reducer, increaser, double male, double female. May contain combinations, such as a double-female reducer. Adapters between multiple hoses are called wye, Siamese, or distributor, which see below.