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    bskinner57's Avatar
    bskinner57 Posts: 45, Reputation: 2
    Junior Member
    		  
    #1

    Jan 23, 2006, 11:22 AM
    Vent question
    When you flush tiolet or let water out of tub or sink, if the vent is working properly will it force air out of the vent?
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Jan 23, 2006, 01:29 PM
    Quote Originally Posted by bskinner57
    when you flush tiolet or let water out of tub or sink, if the vent is working properly will it force air out of the vent?
    No, It pulls air in. When you flush or drain, the water draining down the pipe creates a suction. This suction is relieved by the air entering a vent. Cheers, Tom
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