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Question: 08-17 Code Section: 7 Date: 6 July 2008

OBC 2006 Reference:,, (3),,


Question submitted: What type of Backflow protection would you require on the supply line to this macerating toilet Part #48 – Would it have to meet the requirements for an Air Admittance Valve.


If the device is CSA certified, it would meet the applicable B45.9 standard on macerating toilets.

Approved at AMES 2008

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