Historical
CSA B64 SERIES-11
Backflow preventers and vacuum breakers (Consists of B64.0, B64.1.1, B64.1.2, B64.1.3, B64.1.4 B64.2, B64.2.1, B64.2.1.1, B64.2.2, B64.3,B64.3.1, B64.4, B64.4.1, B64.5, B64.5.1, B64.6, B64.6.1, B64.7, B64.8 and B64.9)
1.1 The CSA B64 Series covers vacuum breakers and backflow preventers that are used in potable water supply systems to prevent cross-connections. 1.2 This Standard specifies definitions, general requirements, test methods, markings, and instructions that are common to some or all of the CSA B64 Series.
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CSA America, Inc. [csa]