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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 principle ...

4. Backflow - Wikipedia

   en.wikipedia.org/wiki/Backflow

   Backflow is a term in plumbing for an unwanted flow of water in the reverse direction. [1] It can be a serious health risk for the contamination of potable water supplies with foul water . In the most obvious case, a toilet flush cistern and its water supply must be isolated from the toilet bowl.

5. My husband and I put everything in a shared Google Calendar ...

   www.aol.com/husband-put-everything-shared-google...

   The woman next to me erupted in peals of laughter. I was not joking. My husband and I have been married for over 18 years. For many of them, ...

6. Drinkable Mayonnaise Is Now a Thing - AOL

   www.aol.com/drinkable-mayonnaise-now-thing...

   Have you ever been in the middle of making a sandwich, smearing on your favorite mayonnaise, and thought to yourself, "Man, I really love mayonnaise. I love mayonnaise so much I wish I could drink ...

7. How investigators caught, tried convicted 1998 antifreeze killer

   www.aol.com/investigators-caught-tried-convicted...

   The 40-year-old mother of two was found dead in her bed on Dec. 3, 1998, by her husband Mark Jensen. Toxicological testing eventually determined she had ethylene glycol, the main ingredient in ...