Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by specific context]
6. system components
7. [plumbing and stormwater system components]
8. piping (plumbing system components)

Anotations

Scope note:

Fixtures and adapters, including ring-shaped, L-shaped, or T-shaped fittings, used in pipe and plumbing systems to connect pipe or tubing sections, to adapt piping to different sizes or shapes, to regulate flow, or for other purposes.