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ANSI/ASSE 1015-2009

Performance Requirements for Double Check Backflow Prevention Assemblies and Double Check Fire Protection Backflow Prevention Assemblies

The purpose of Double Check Backflow Prevention Assemblies and Double Check Fire Protection Backflow Prevention Assemblies is to keep polluted water from flowing into a potable water distribution system when some abnormality in the system causes the pressure to be temporarily higher in the polluted part of the system than in the potable water supply piping.

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American Society of Sanitary Engineering [asse-sanitary]

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