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Thread: Kitchen sink installation and plumbing under sink?

  1. #1
    DIY Junior Member Anita's Avatar
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    Default Kitchen sink installation and plumbing under sink?

    I had to redo the plumbing under the sink because of a new sink.

    Is it OK to have a rise of 8-9 inches from the bottom of the trap to the exit hole?

    Also, does it matter which hose is used for hot vs cold water?

  2. #2
    Forum Admin, Expert Plumber Terry's Avatar
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    It sounds like you added a deeper sink, which means the drain in the wall is now too high.
    If you have a disposer, I imagine that the lower part will be underwater now. I like to cut into the wall and lower the plumbing there when a deep sink is installed.

    As far as the faucet goes. Normally hot is to the left, cold on the right
    And if the faucet handle goes front to back, Hot toward the wall, and Cold toward the child hanging onto the handle from the front.

  3. #3
    DIY Junior Member Anita's Avatar
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    Actually the sink holes are just in a different place and we tried to make a configuration that would allow drainage.
    It is all hooked up now but two of the plastic slip joints are leaking, how can we get that to stop??


    Thanks so much for your quick response,it is much appreciated.

    Hot & cold is good to go , thanks Terry!

  4. #4
    Forum Admin, Expert Plumber Terry's Avatar
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    On the swivels, loosen everything up, and then tighten the swivel on the p-trap first. The vertical and the horizontal come next.

  5. #5
    DIY Junior Member Anita's Avatar
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    Can the t connector for disposal be below the level to where the water exits past the trap?

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    In the Trades Gary Swart's Avatar
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    Basic fact. Unless pumped, water does not run uphill no matter what the source.

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    Forum Admin, Expert Plumber Terry's Avatar
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    This is what you are shooting for. Hopefully the outlet on the tee is a little higher then the drain side of the p-trap.
    You can go underwater if the sink is too low, and the water will drain, but it won't drain away as well as it should. Some water will always remain.


  8. #8
    DIY Junior Member Anita's Avatar
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    Job finished, Thanks Terry, for all your time and trouble.....Anita <3

  9. #9
    Moderator & Master Plumber hj's Avatar
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    Your previous questions raise some issues. How about a photo of the finished product?
    Licensed residential and commercial plumber

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