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2. Drain-waste-vent system - Wikipedia

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

   In the U.S., every plumbing fixture must also be coupled to the system's vent piping. [1] Without a vent, negative pressure can slow the flow of water leaving the system, resulting in clogs, or cause siphonage to empty a trap. The high point of the vent system (the top of its "soil stack") must be open to the exterior at atmospheric pressure.

3. Flame arrester - Wikipedia

   en.wikipedia.org/wiki/Flame_arrester

   A flame arrester during testing A flame arrester made for a 91 cm (36 inch) pipe weighing 10 tons. A flame arrester (also spelled arrestor), deflagration arrester, [1] or flame trap [2] is a device or form of construction that will allow free passage of a gas or gaseous mixture but will interrupt or prevent the passage of flame. It prevents the ...

4. Decanter centrifuge - Wikipedia

   en.wikipedia.org/wiki/Decanter_Centrifuge

   With a 3 phase decanter centrifuge, it is possible to separate 3 phases from each other in one process step only. For example, two liquids which cannot be mixed because of different densities (e.g. oil and water) are separated from a solids phase. The heavy liquid (water) collects in the middle between the oil and the solids layer.

5. Flashback arrestor - Wikipedia

   en.wikipedia.org/wiki/Flashback_arrestor

   Flashback arrestors with different size and flow rate, and different connections. A flashback arrestor or flash arrestor is a gas safety device most commonly used in oxy-fuel welding and cutting to stop the flame or reverse flow of gas back up into the equipment or supply line. It protects the user and equipment from damage or explosions.

6. Chimney (locomotive) - Wikipedia

   en.wikipedia.org/wiki/Chimney_(locomotive)

   The difficulty of casting complex spark arrestors encouraged fabrication of sheet metal chimneys for wood-burning locomotives. [5] Fifty-seven of over one thousand locomotive spark arrestors patented in the United States, 1857. Early spark arrestors were simply iron wire screens installed within the stack. However, the screen reduced the rate ...

7. Georgia Couple Who Sexually Abused 2 Boys They Adopted in ...

   www.aol.com/georgia-couple-sexually-abused-2...

   A Georgia couple was sentenced to 100 years in prison without parole after adopting two boys and sexually abusing them. William and Zachary Zulock will each spend the rest of their lives behind ...

8. Should You Stop Drinking Coffee Every Day? Experts Weigh In - AOL

   www.aol.com/stop-drinking-coffee-every-day...

   There are a handful of things most of us do every day upon waking up: brush our teeth, scroll on our phones, enjoy a cup of coffee.For many, that cup of coffee is a non-negotiable, whether you ...

9. Spark arrestor - Wikipedia

   en.wikipedia.org/wiki/Spark_arrestor

   The Spark Arrester Guide is used by field inspectors and consumers to verify product certification status. Manufacturers pursuing spark arrester qualification in the United States should consult the USDA Forest Service's "Manufacturer's Submission Procedure" for both general purpose [ 6 ] and small engine [ 7 ] spark arresters.