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2. Chimney - Wikipedia

   en.wikipedia.org/wiki/Chimney

   An H-style cap is a chimney top constructed from chimney pipes shaped like the letter H. It is an age-old method of regulating draft in situations where prevailing winds or turbulences cause downdraft and back-puffing. Although the H cap has a distinct advantage over most other downdraft caps, it fell out of favor because of its bulky design.

3. 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.

4. Damper (flow) - Wikipedia

   en.wikipedia.org/wiki/Damper_(flow)

   This damper can switch the electrical power to control additional "slave" dampers, minimizing the electrical load on the damper's control circuitry and power transformer. A zone damper (also known as a Volume Control Damper or VCD) is a specific type of damper used to control the flow of air in an HVAC heating or cooling system. In order to ...

5. Glossary of boiler terms - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_boiler_terms

   [4] [5] Throatplate a plate forming the lower front of the outer firebox of a locomotive boiler, below the barrel. Top-feed in locomotive boilers, a feed water check valve placed on the top of the boiler drum. This encourages rapid mixing of the cold feedwater with the hot steam, reducing the risk of thermal shock to the heated parts of the boiler.

6. Man walks naked for 25 miles from Oregon border into ... - AOL

   www.aol.com/news/man-walks-naked-25-miles...

   A man is lucky to be alive after walking naked for 25 miles in rain and near freezing temperatures from the Oregon border to near the Tri-Cities, say officials.

7. Nicole Kidman had no reservations about 'Babygirl' sex scenes ...

   www.aol.com/entertainment/nicole-kidman-had-no...

   Nicole Kidman might still be blushing over some of the scenes she filmed in her new erotic thriller Babygirl, but the film's director said the actress never wavered about the sexual material ...