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    Glenn's Avatar
    Glenn Posts: 48, Reputation: 1
    Junior Member
    		  
    #1

    Mar 20, 2006, 08:19 PM
    Discharging washer to bathtub drain
    Hi, it's been a while.

    I'm installing a washing machine in a new location and my question is how to discharge it. The wall beside it contains the drain and vent stack for the bathtub.

    Can I put a "Y" in the vent stack, a 45 degree elbow to turn vertical, and then a large pipe like a 3" pipe to accept the discharge hose from the washer? Will this work? Will some of the washer discharge trickle into the tub?

    Thanks,

    Glenn
    PalmMP3's Avatar
    PalmMP3 Posts: 321, Reputation: 28
    Full Member
    		  
    #2

    Mar 20, 2006, 10:14 PM
    Hi Glenn,

    Sorry, but I would NOT recommend it, for three reasons:

    1) The bathtub drain is a 1½" pipe, while washers (especially newer ones, with more powerful discharge pumps) generally need a 2" pipe. And even though washers can often be made to work properly with a 1½" line, your case is different because of my second reason:
    2) A bathtub line gets full of hair matted with grease from soap. A washer line gets full of detergent residue and lint clogs. Put the two together in the same pipe - especially a skinny lil' 1½" pipe - and you're going to spend a LOT of [un]happy weekends snaking out that line in the future.
    3) Tapping into the bathtub's vent line and using it as a drain line would render the bathtub's trap improperly vented, which needless to say is not kosher.

    Sorry I couldn't be more positive about it. Any more questions, we're as close as a click.

    Cheers,
    Moishe
    Note: if this post was helpful, please rate it by clicking "Comment on this Post" in the upper-right corner of this post. Thank you.
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