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ASSE(SANITARY) 1048   2021   Performance Requirements for Double Check Detector Fire Protection Backflow Prevention Assemblies 50 $
ASSE(SANITARY) 1048   2011   Performance Requirements for Double Check Detector Fire Protection Backflow Prevention Assemblies 50 $
ASSE(SANITARY) 1048   2009   Performance Requirements for Double Check Detector Fire Protection Backflow Prevention Assemblies 30 $
ASSE(SANITARY) 1048   1999   Performance Requirements for Double Check Detector Fire Protection Backflow Prevention Assemblies 20 $