Re: Washing machine
Posted by jimbo on March 24, 2004 at 10:36:31:
In response to Re: Washing machine
:The answer to your question is NO.

I find that a washing machine seems to "like" some air entry around the gooseneck; in fact if the standpipe is outside the finished wall, I like to use a wye on top of the standpipe with the gooseneck going in the wye and air in from the top. This seems to help reduce backup in the standpipe.

However, if the actual drain inboard of the trap is not vented, then you will have real problems.

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