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  2. The Sneaky Reason Why Your Dishwasher Isn't Draining - AOL

    www.aol.com/lifestyle/sneaky-reason-why...

    If the dishwasher is not draining, it's usually easy to unclog the dishwasher drain. Learn how to drain a dishwasher with standing water and when to call a pro.

  3. Air gap (plumbing) - Wikipedia

    en.wikipedia.org/wiki/Air_gap_(plumbing)

    This "air gap" is visible above the sink as a small cylindrical fixture mounted near the faucet. In the base cabinet under the sink, the drain hose from the dishwasher feeds the "top" of the air gap, and the "bottom" of the air gap is plumbed into the sink drain below the basket, or into a garbage disposal unit. When installed and maintained ...

  4. Backflow - Wikipedia

    en.wikipedia.org/wiki/Backflow

    The size of the acceptable gap also depends on the capacity of the incoming supply, such that a stuck-open flow cannot overfill the cistern and close the gap. Air gaps may also protect against back pressure, and are generally favoured for this. [3] However most air gaps also limit the system pressure that may be transmitted across them.

  5. Backflow prevention device - Wikipedia

    en.wikipedia.org/wiki/Backflow_prevention_device

    An air gap is simply an open vertical space between any device that connects to a plumbing system (like a valve or faucet) and any place where contaminated water can collect or pool. A simple air gap has no moving parts, other than flowing water. Many plumbing codes specify a minimum air gap distance required for various circumstances, such as ...

  6. Reduced pressure zone device - Wikipedia

    en.wikipedia.org/wiki/Reduced_pressure_zone_device

    They are considered suitable because they prevent both back pressure and back-siphonage, because of a redundant design (even with two check valves broken the device still provides protection), and because they are testable to verify correct operation. RPZDs are often chosen instead of an air gap since the head loss across the RPZD is much smaller.

  7. 6 Money-Draining Appliances To Quit or Cut Down on - AOL

    www.aol.com/finance/6-money-draining-appliances...

    For smaller households, washing by hand using a basin of water can be more cost-effective than running a half-empty dishwasher. Central Air Conditioners. Average Wattage: 3,000 to 3,500. Average ...

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