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2. Concentric reducer - Wikipedia

   en.wikipedia.org/wiki/Concentric_reducer

   A copper concentric reducer. A concentric reducer is used to join pipe sections or tube sections on the same axis. [1] The concentric reducer is cone-shaped, and is used when there is a shift in diameter between pipes. [1] For example, when a 1" pipe transitions into a 3/4" pipe and the top or bottom of the pipe doesn't need to remain level. [2]

3. Pipe (fluid conveyance) - Wikipedia

   en.wikipedia.org/wiki/Pipe_(fluid_conveyance)

   Consequently, a 1-inch (25 mm) copper pipe had a 1 + 1 ⁄ 8-inch (28.58 mm) outside diameter. The outside diameter was the important dimension for mating with fittings. The wall thickness on modern copper is usually thinner than 1 ⁄ 16-inch (1.6 mm), so the internal diameter is only "nominal" rather than a controlling dimension. [13]

4. British Standard Pipe - Wikipedia

   en.wikipedia.org/wiki/British_Standard_Pipe

   British Standard Pipe (BSP) is a set of technical standards for screw threads that has been adopted internationally for interconnecting and sealing pipes and fittings by mating an external thread with an internal (female) thread.

5. List of brazing alloys - Wikipedia

   en.wikipedia.org/wiki/List_of_brazing_alloys

   875/895 [1] [11] – CU 301. Brass. Brasses are often used on mild steel assemblies. For use on brass, bronze, and low carbon steel. Used in plumbing. 58.5: 41.3: 0.2: Cu 58.5 Zn 41.1 Sn 0.2 Si 0.2: Cu–Zn 875/895 [1] [11] – CU 302. Brass. For carbon steel and galvanized steel. Used in plumbing. 58.5: 41.1: 0.2: 0.2: Cu 60 Zn 39.55 Si 0.3 Mn ...

6. Electroless deposition - Wikipedia

   en.wikipedia.org/wiki/Electroless_deposition

   The standard potential is defined as the power of reduction of compounds. Examples are shown in Table 1., in which Zn with a lower standard potential (-0.7618 V) act as a reducing agent to copper (0.3419 V). [2] The calculated potentials for the reaction of the copper salt and zinc metal is ~1.1 V meaning the reaction is spontaneous.

7. Artificial lift - Wikipedia

   en.wikipedia.org/wiki/Artificial_lift

   Artificial lift is the use of artificial means to increase the flow of liquids, such as crude oil or water, from a production well. Generally this is achieved by the use of a mechanical device inside the well (known as pump or velocity string) or by decreasing the weight of the hydrostatic column by injecting gas into the liquid some distance down the well.