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2. Duct (flow) - Wikipedia

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

   Some flexible duct markets prefer to avoid using flexible duct on the return air portions of HVAC systems, however flexible duct can tolerate moderate negative pressures. The UL181 test requires a negative pressure of 200 Pa. To use flexible ducting in a system, make sure to pull the duct tight so you get the full internal diameter.

3. Duct tape - Wikipedia

   en.wikipedia.org/wiki/Duct_tape

   Wheel fender extension to keep down lunar dust improvised using duct tape during the Apollo 17 mission. The first material called "duck tape" was long strips of plain non-adhesive cotton duck cloth used in making shoes stronger, for decoration on clothing, and for wrapping steel cables or electrical conductors to protect them from corrosion or wear. [4]

4. Speed tape - Wikipedia

   en.wikipedia.org/wiki/Speed_tape

   A patch of speed tape on a United Airlines Airbus A319. Speed tape is sometimes used to protect sealant while curing, [4] or to patch non-critical components of an aircraft. [1] It can also be used for patching bullet damage to combat aircraft. [5] [6] Use of speed tape should be authorized by engineering teams, and has to comply with certain ...

5. Thread seal tape - Wikipedia

   en.wikipedia.org/wiki/Thread_seal_tape

   Thread seal tape is wrapped around the threads, lubricating the connection and allowing the two pieces to be screwed deeper together. Thread seal tape (also known as PTFE tape, Teflon tape, or plumber's tape) is a polytetrafluoroethylene (PTFE) film tape commonly used in plumbing for sealing pipe threads. The tape is sold cut to specific widths ...

6. Yankee dryer - Wikipedia

   en.wikipedia.org/wiki/Yankee_dryer

   A Yankee dryer is a pressure vessel used in the production of machine glazed (MG) and tissue paper. On the Yankee dryer, the paper goes from approximately 42–45% dryness to just over 89% dryness. In industry, MG cylinders or Yankee dryers are primarily used to remove excess moisture from pulp that is about to be converted into paper.

7. List of This Old House episodes (seasons 11–20) - Wikipedia

   en.wikipedia.org/wiki/List_of_This_Old_House...

   Meanwhile, plumbing contractor Ernest Hutson shows us how to vent an understairs powder-room toilet with an air-admittance valve that precludes the use of a through-the-roof vent. Viewers then tour the architectural and plumbing splendors of the Owens-Thomas House, an outstanding example of the English Regency style built in 1819 by architect ...