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Thread: Washing machine and utility sink tie in question

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    DIY Junior Member dannyd38's Avatar
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    Feb 2010

    Default Washing machine and utility sink tie in question

    I am going to frame a wall in the laundry room so all the plumbing is out of sight. I want to tie in a washing machine drain and a utility sink drain into the main stack. The stack is currently a 3" copper line that I will be changing over to PVC. Should I use a sanitary t or a wye when connecting to the vertical main stack? Can I use the main as a vent or should I use an air admittance valve? The washing machine will be to the left of the stack and the utility sink to the right. Thanks in advance for any help I receive.
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    Last edited by dannyd38; 02-11-2010 at 06:56 PM.


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