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  2. Air gap (plumbing) - Wikipedia

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

    An air gap, as related to the plumbing trade, is the unobstructed vertical space between the water outlet and the flood level of a fixture. [1] Air gaps of appropriate design are legally required by water health and safety regulations in many countries. An air gap is the simplest form of a backflow prevention device.

  3. Air lock - Wikipedia

    en.wikipedia.org/wiki/Air_lock

    Air lock problems often occur when one is trying to recommission a system after it has been deliberately (for servicing) or accidentally emptied. Take, for example, a central heating system using a circulating pump to pump water through radiators. When filling such a system, air is trapped in the radiators. This air has to be vented using screw ...

  4. Backflow prevention device - Wikipedia

    en.wikipedia.org/wiki/Backflow_prevention_device

    The simplest, most reliable way to provide backflow prevention is to provide an air gap. 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.

  5. Plumbing problem at Glen Canyon Dam brings new threat to ...

    lite.aol.com/news/science/story/0001/20240417/...

    Those issues include problems with the four tubes such as sedimentation and cavitation — when tiny air bubbles develop while water passes through plumbing. Cavitation can cause tears in metal and other mechanical damage. The Colorado River provides water to seven U.S. states, nearly 30 Native American tribes and two states in Mexico.

  6. Automatic bleeding valve - Wikipedia

    en.wikipedia.org/wiki/Automatic_bleeding_valve

    An automatic bleeding valve or air release valve (ARV) is a plumbing valve used to automatically release trapped air from a heating system. Air, or other gas, may collect within plumbing. For water delivery systems to taps and basins, particularly with good main supply pressure, this air is usually flushed through with the water flow and does ...

  7. Water hammer - Wikipedia

    en.wikipedia.org/wiki/Water_hammer

    In residential plumbing systems, water hammer may occur when a dishwasher, washing machine or toilet suddenly shuts off water flow. The result may be heard as a loud bang, repetitive banging (as the shock wave travels back and forth in the plumbing system), or as some shuddering. Other potential causes of water hammer: A pump stopping

  8. Storm Blair live: Deadly winter conditions cause hundreds of ...

    www.aol.com/severe-us-winter-storm-leaves...

    Meanwhile, frigid air is blowing into the southern US, bringing single-digit “feels like” temperatures to much of Texas and causing officials to issue a freeze watch in orange-growing Florida.

  9. Backflow - Wikipedia

    en.wikipedia.org/wiki/Backflow

    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. In most cases, they replace mains pressure with the pressure of that from a raised gravity cistern. Common examples of an air gap in domestic plumbing are:

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