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2. Backflow prevention device - Wikipedia

   en.wikipedia.org/wiki/Backflow_prevention_device

   Backflow means the undesirable reversal of flow of a liquid, gas, or suspended solid into the potable water supply; a backflow preventer is designed to keep this from happening. Points at which a potable water system connects with a non-potable water system are called cross connections .

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. Double check valve - Wikipedia

   en.wikipedia.org/wiki/Double_check_valve

   A double check valve or double check assembly (DCA) is a backflow prevention device designed to protect water supplies from contamination. [1] It is different from the two-way check valves (sometimes erroneously referred to as double check valves) used in air brake systems on heavy trucks which select from the highest pressure source.

5. 4 key women's health issues that have been neglected ... - AOL

   www.aol.com/4-key-womens-health-issues-093000924...

   President Donald Trump, from left, actress Cheryl Hines, and Robert F. Kennedy Jr., the new secretary of Health and Human Services (HHS), during a ceremony in the White House in Washington, D.C ...

6. US health agencies sued over removal of health data websites

   www.aol.com/news/us-health-agencies-sued-over...

   A medical advocacy group on Tuesday sued the main U.S. health agencies over the sudden removal of websites containing public health information in response to an executive order by President ...

7. 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.