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2. Drain-waste-vent system - Wikipedia

   en.wikipedia.org/wiki/Drain-waste-vent_system

   A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.

3. Owner's manual - Wikipedia

   en.wikipedia.org/wiki/Owner's_manual

   2007 Toyota Yaris hatchback owner's manual 1919 Ford Motor Company car and truck operating manual. An owner's manual (also called an instruction manual or a user guide) is an instructional book or booklet that is supplied with almost all technologically advanced consumer products such as vehicles, home appliances and computer peripherals.

4. AOL Mail

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

5. Reduced pressure zone device - Wikipedia

   en.wikipedia.org/wiki/Reduced_pressure_zone_device

   Backflow preventers are categorized into three groupings: Assembly, Device or Method. With the exception of elimination, these are the only ways one can control backflow from taking place. The eight named backflow assemblies all have two resilient seated isolation/shut off valves with properly located test ports.

6. She was a teenage mother in Detroit. Now she’s a Ghanaian ‘Queen’

   www.aol.com/she-teenage-mother-detroit-now...

   Kennedy Johnson was a teenager when she gave birth to a baby girl in a Detroit foster home. Then, on a visit to Ghana, she was chosen to become “Friendship Queen.”

7. Dry January: What is it and how beneficial can giving up ...

   www.aol.com/dry-january-beneficial-giving...

   If you are concerned about yourself or a loved one, call the Substance Abuse and Mental Health Services Administration's (SAMSA) confidential, free, 24-hour-a-day, 365-day-a-year helpline at 1-800 ...