pressure zone meaning

• [Architecture]
  

  An area of a building (it may be an entire floor, several floors, or the entire building) supplied with water having a common pressure origin or a common water supply.

• 
  [Electronics]
  A region of high air pressure that is immediately adjacent to a surface reflecting an acoustic (sound) wave.
  

• pressure-zone microphone:    [Electronics]A mic ...
• in a zone:    [American slang]ad ...
• in the zone:     (informal) & ...

Examples

1. thus it was demonstrated that the main pressure zone was little affected by the downstream flow condition.
2. especially made for testing all reduced pressure zone backflow preventers
3. pzm pressure zone microphone
4. product variants are also offered for tasks in pure vacuum zones or combined vacuum-pressure zones
5. non controllable backflow preventer with different pressure zones-family c, type a; german version en 14367 : 2005