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    spiderrivers's Avatar
    spiderrivers Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Oct 26, 2009, 06:30 PM
    Installing a commercial three tub sink.
    When installing a sink,what is air gap.
    hkstroud's Avatar
    hkstroud Posts: 11,929, Reputation: 899
    Home Improvement & Construction Expert
    		  
    #2

    Oct 26, 2009, 06:40 PM

    How are you using the term air gap. Technically the air gap is the space between the faucet spout and the sink. If you are talking about a device called an air gap, it is a device that is used in conjunction with connecting a dishwasher that prevents contaminated waste water from the sink drain flowing into the dishwasher.
    Milo Dolezal's Avatar
    Milo Dolezal Posts: 7,192, Reputation: 523
    Plumbing Expert
    		  
    #3

    Oct 26, 2009, 06:40 PM

    Air Gap is a Vacuum Braker device that mounts between - let' say - dishwasher and drain. It is the "air-gap" that will prevent waste water from entering dishwasher.

    Commercial faucets have Air Gap built into the spout to prevent dirty sink water to be siphoned back into building's water supply.

    I am enclosing two photos of typical Air Gaps: first one is Air Gap used for Dishwashers, the second is Air Gap built-in onto commercial faucets...
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