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]

Narrower term/s

• fixture traps
• house traps

Anotations

Scope note:

Fittings or devices so designed and constructed as to provide, when properly vented, a liquid seal that will prevent the back passage of air without materially affecting the flow of sewage or waste water.