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    HerdInOregon's Avatar
    HerdInOregon Posts: 3, Reputation: 1
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    #1

    May 7, 2007, 01:36 PM
    Utility sink install (variation on a theme)
    I have seen a number of posts about installing a utility sink in a laundy room. I would like to do the same, but here is the difference. It is no longer a laundry room.

    So how can I hook up the sink to the old landry supplies and drain as easily as possible without the added complexity of it sharing with the washer?
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    HerdInOregon Posts: 3, Reputation: 1
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    #2

    May 8, 2007, 02:45 PM
    Perhaps a little clarification. I would like to attach the utility sink to the existing washing machine supply and standpipe connector box (remember, there is no longer a washing machine). I really don't want to break into the wall for this to get to the trap.
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
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    #3

    May 8, 2007, 03:01 PM
    If all you have is the washer stand pipe to tie to I would cut the standpipe down and connect the drain to the stand pipe using the existing washer trap and vent.
    This is the easiest way to drain the sink and you can pipe over for the water. Good luck, Tom
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    HerdInOregon Posts: 3, Reputation: 1
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    #4

    May 8, 2007, 03:14 PM
    Unfortunately, the standpipe is in the wall. Sounds like I'd either need break into the wall or consider a grey water pump. If I broke into the wall and cut down the standpipe, I'd want to feed the sink directly into it (no sink trap), correct? Otherwise, I'd have 2 traps and a nice vacuum?
    iamgrowler's Avatar
    iamgrowler Posts: 1,421, Reputation: 110
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    #5

    May 8, 2007, 05:00 PM
    Quote Originally Posted by speedball1
    If all you have is the washer stand pipe to tie to I would cut the standpipe down and connect the drain to the stand pipe using the existing washer trap and vent.
    But wouldn't this constitute a running trap -- And an oversized one at that?

    I seem to recall you getting on Doug's case about recommending running traps a month or so ago, Tom.
    iamgrowler's Avatar
    iamgrowler Posts: 1,421, Reputation: 110
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    #6

    May 8, 2007, 05:06 PM
    Quote Originally Posted by HerdInOregon
    Perhaps a little clarification. I would like to attach the utility sink to the existing washing machine supply and standpipe connector box (remember, there is no longer a washing machine). I really don't want to break into the wall for this to get to the trap.
    Sorry, but the best way to approach this would be to open up the wall and do it right.

    The washer box in the wall has a 2" trap, which is 1/2 pipe size too large for a laundry tub, the laundry tub trap should be 1-1/2".

    And adapting the 7/8" hose adapters on the washer box to the 1/2" IPS connectors on the laundry tub faucet, while not difficult, is going to require cobbling together something you may end up wishing you hadn't left unattended over a three day weekend out of town.
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
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    #7

    May 9, 2007, 10:55 AM
    Quote Originally Posted by HerdInOregon
    Unfortunately, the standpipe is in the wall. Sounds like I'd either need break into the wall or consider a grey water pump. If I broke into the wall and cut down the standpipe, I'd want to feed the sink directly into it (no sink trap), correct? Otherwise, I'd have 2 traps and a nice vacuum?
    Correct. The sink would tie directly intoi the stand pipe with no extra trap.
    But Growlers right. I gave you the "easy quicky" way. The correct way would be to take out the wall and remove the washer trap and standpipe, install a sanitary tee in the vent stack about 16 inches from floor to center and pipe over to the sinks trap. You now have options, Good luck, Tom
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