Historical
CSA B64.10-11/B64.10.1-11
Selection and installation of backflow preventers/Maintenance and field testing of backflow preventer
This Standard specifies requirements for the selection and installation of backflow preventers. Additional information on how backflow due to back siphonage and back pressure occurs, and how to select and apply specific devices, is included in Annexes A, B, and C.
CSA America, Inc. [csa]