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  • Chapter 9: Fluid Lines & Fittings › Swaged Fittings

    Special installation tooling is available in portable kits. Always use the manufacturer’s instructions to install swaged fittings. Typical Permaswage™ fittings are shown in Figure 9-25. One of the latest developments is the Permalite™ fitting. Permalite™ is a tube ... fitting that is mechanically attached to the tube by axial swaging. Permalite™ works by deforming the fitting into the tube being joined by moving a ring, a component of the Permalite™ fitting, axially along the fitting length using a Permaswage…

  • Chapter 9: Fluid Lines & Fittings › Beading › Fluid Line Identification

    Fluid Line Identification Fluid lines in aircraft are often identified by markers made up of color codes, words, and geometric symbols. These markers identify each line’s function, content, and primary hazard. Figure 9-16 illustrates the various color codes ... symbols used to designate the type of system and its contents. Fluid lines are marked, in most instances, with 1" tape or decals. [Figure 9-17A] On lines 4" in diameter (or larger), lines in oily environment, hot lines…

  • Chapter 9: Fluid Lines & Fittings › Beading › Fluid Line End Fittings

    Fluid Line End Fittings Depending on the type and use, fittings have either pipe threads or machine threads. Pipe threads are similar to those used in ordinary plumbing and are tapered, both internal and external. External threads are referred ... male threads and internal threads are female threads. When two fittings are joined, a male into a female, the thread taper forms a seal. Some form of pipe thread lubricant approved for particular fluid application should be used when joining…