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  2. Backflow prevention device - Wikipedia

    en.wikipedia.org/wiki/Backflow_prevention_device

    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.

  3. Reduced pressure zone device - Wikipedia

    en.wikipedia.org/wiki/Reduced_pressure_zone_device

    A reduced pressure zone device (RPZD, RPZ, or RPZ valve) is a type of backflow prevention device used to protect water supplies from contamination. RPZDs may also be known as reduced pressure principle (RP), reduced pressure principle backflow prevention devices , [ 1 ] [ 2 ] reduced pressure zone assemblies (RPZA), [ 3 ] or reduced pressure ...

  4. How To Clean A Toilet Tank To Prevent Rust And Mildew ... - AOL

    www.aol.com/lifestyle/clean-toilet-tank-prevent...

    "If the tank refills, the water supply hasn’t been fully shut off, so double-check the valve. If you're sure you've turned off the water but the tank continues to refill, you'll need to call a ...

  5. Valve leakage - Wikipedia

    en.wikipedia.org/wiki/Valve_leakage

    The importance of valve leakage depends on what the valve is controlling. For example, a dripping tap is less significant than a leak from a six-inch pipe carrying high-pressure radioactive steam. In the United States, the American National Standards Institute specifies six different leakage classes, with "leakage" defined in terms of the full ...

  6. Thermal expansion valve - Wikipedia

    en.wikipedia.org/wiki/Thermal_expansion_valve

    A thermal expansion valve or thermostatic expansion valve (often abbreviated as TEV, TXV, or TX valve) is a component in vapor-compression refrigeration and air conditioning systems that controls the amount of refrigerant released into the evaporator and is intended to regulate the superheat of the refrigerant that flows out of the evaporator ...

  7. Mitchell scores 29 and the Cavaliers beat the Pelicans 131 ...

    www.aol.com/mitchell-scores-29-cavaliers-beat...

    Donovan Mitchell scored 29 points and the Cleveland Cavaliers defeated the New Orleans Pelicans 131-122 on Wednesday night to open 9-0 for the first time in their 55-year NBA history. Caris LeVert ...

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