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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. Piping and plumbing fitting - Wikipedia

   en.wikipedia.org/wiki/Piping_and_plumbing_fitting

   Minimum requirements are typically at the end of each branch in piping, just ahead of each water closet, at the base of each vertical stack and inside and outside the building in the main drain or sewer. Clean-outs usually have screw-on caps or screw-in plugs.

4. Plumbing - Wikipedia

   en.wikipedia.org/wiki/Plumbing

   Roman roofs used lead in conduits and drain pipes [14] and some were also covered with lead. Lead was also used for piping and for making baths. [15] Plumbing reached its early apex in ancient Rome, which saw the introduction of expansive systems of aqueducts, tile wastewater removal, and widespread use of lead pipes.

5. Sewage pumping - Wikipedia

   en.wikipedia.org/wiki/Sewage_pumping

   KOS+ M openwell submersible pump. Small-scale sewage pumping is normally done by a submersible pump.. This became popular in the early 1960s, when a guide rail system was developed to lift the submersible pump out of the pump station for repair, and ended the dirty and sometimes dangerous task of sending people into the sewage or wet pit. [1]

6. Trump says he will not try to replace Fed's Powell - AOL

   www.aol.com/news/trump-says-not-try-replace...

   (Reuters) -U.S. President-elect Donald Trump said in an interview aired on Sunday he will not try to replace Federal Reserve Chair Jerome Powell upon taking office in January. Trump added that he ...

7. Barron Trump Is a 'Ladies Man' at New York University ... - AOL

   www.aol.com/lifestyle/barron-trump-ladies-man...

   Barron Trump is not having trouble fitting in at college.. The 18-year-old son of Donald and Melania Trump has been "popular with the ladies" since starting classes at New York University's Stern ...

8. Injector - Wikipedia

   en.wikipedia.org/wiki/Injector

   The S type pump is useful for removing water from a well or container. Shallow well pumps are those in which the jet assembly is attached directly to the main pump and are limited to a depth of approximately 5-8m to prevent cavitation. Deep well pumps are those in which the jet is located at the bottom of the well. The maximum depth for deep ...

9. Texas police officer fatally shot during traffic stop ...

   www.aol.com/texas-police-officer-fatally-shot...

   A Texas police officer was killed in the line of duty after being shot during a traffic stop, according to his department. Terrell Police Department Officer Jacob Candanoza, 28, died on Monday ...