Historical
CAN/CSA-B64 SERIES-07
Backflow Preventers and Vacuum Breakers (Consists of B64.0, B64.1.1, B64.1.2, B64.1.3, 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) (includes updates #1 and #2)
Includes updates 1 and 2
CSA America, Inc. [csa]