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    sylvester715's Avatar
    sylvester715 Posts: 2, Reputation: 1
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    #1

    Apr 16, 2008, 10:44 AM
    Toilet venting
    Do they make a ventless toilet? My friend has installed a new toilet and learned after that the previous owners didn't install a vent on the drain.
    sylvester715's Avatar
    sylvester715 Posts: 2, Reputation: 1
    New Member
    		  
    #2

    Apr 16, 2008, 10:45 AM
    Do they make a ventless toilet?
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #3

    Apr 16, 2008, 11:12 AM
    No... not a toilet that will install onto real plumbing. Your friend may be able to install an AAV (air admittance valve.. see pic.)) close by.. but will still need to cut into the plumbing to install it.

    How is it that they know for sure no vent present... In fact, if lavatory sink is next to this toilet the lavatory may be acting as a WET VENT for toilet..and that is permissible everywhere..?

    Let me know what you think... Mark
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