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A Reduced Pressure Backflow Preventer (RPBP) Valve

  1. Sep 15, 2016 #1
    I know what 'RPBP' valve but do not know how it works? Please explain it's function with picture, if possible.
    Does it work like Spring-Loaded Check Valve? it seems it is combined of two Spring-loaded Check Valve, But why two and how are assembled?
  2. jcsd
  3. Sep 15, 2016 #2


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