Advisory Bulletin

Double Check Valve Assembly

Double Check Valve Assembly

Changes to the required backflow prevention for irrigation systems
As of January 1, 2013 all irrigation systems (including residential systems) installed within the city of Calgary will be subject to the CSA B64.10-07/B64.10.1-07 section and installation of backflow preventers code and Clause 2,6,2,1,(3) in The National Plumbing Code of Canada 2010. For more information please click here (pdf)
For a list of frequently asked questions and answers regarding this change please click here.

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