Air admittance valve help please All aspects of plumbing questions and answers, help, tips and information

[montyp]

hi all...... we have an air admittance valve located in the downstairs bathroom soil pipe stack, all been OK.....I now want to fit a new upstairs bathroom, that will eventually connect to the same drain (underground outside), and wonder if this is OK as the new bathroom will be located above the level of the existing valve?

thanks

john
UK

[stoneyboy]

montyp,
You will have to fit another AAV in the new bathroom.
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