can you install dishwasher/disposal without air gap ?

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  • 10 months ago

    You CAN, but it is not a good idea.

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  • 10 months ago

    Yes, but the drain water may back up in the sink if it is connected to a garbage disposal rather than the sink drain..

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  • 10 months ago

    yes. mine is installed that way and has worked just fine for years

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  • 10 months ago

    Although it can be done safely if done right often local codes are requiring an air gap.

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  • Anonymous
    10 months ago

    You risk back siphonage from the dishwasher. Check the installation recommendations for your particular machine, but it is generally easy enough to overcome.

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  • elhigh
    Lv 7
    10 months ago

    Sure. Disposals install directly into the drain line, they're part of it. You still need a P-trap downstream of it but that's all.

    Dishwashers usually dump directly into the tailpiece of a sink's drain lines. It isn't an air gap per se, but an air break - similar in function but different in construction.

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