Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by general context]
6. hardware (components)
7. [hardware by form]
8. finish hardware (hardware)

Narrower term/s

• flush valves
• foot pedal valves
• mixing pressure valves
• shut-off valves
• soap valves
• ball valves
• float valves[+]
  • ball cocks

Anotations

Scope note:

Devices using a flap, lid, plug, or other design, applied to a pipe or aperture to control the passage of air, steam, water, etc., and that act by yielding to pressure in one direction only.