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    plumbed's Avatar
    plumbed Posts: 1, Reputation: 1
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    #1

    Jul 12, 2009, 07:00 AM
    ? Vent pipe
    Home built in the 60's. I don't believe my washing machine drain is vented. Would this lend to drain backing up before washing machine tub is fully drained?
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Jul 12, 2009, 07:33 AM
    Quote Originally Posted by plumbed View Post
    Home built in the 60's. I don't believe my washing machine drain is vented. Would this lend to drain backing up before washing machine tub is fully drained?
    It certainly help. But your immediate problem is a partial blockage in the drain line.I would first snake and clear the drain line. Not having a vent eill slow down the flow of the discharge allowing more build up to occur. You do have options here.
    1) you can vent the drain with a AAV, (see image) **OR**
    2) you can install a compression fitting on the stand pipe and make it a closed system for the backups. (I have one of these on my own stand pipe)

    More questions? I'm as close as a click, Tom
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