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2. Piping and plumbing fitting - Wikipedia

   en.wikipedia.org/wiki/Piping_and_plumbing_fitting

   Flexible rubber sleeves are used to connect this cast-iron and copper DWV installation. Cast iron DWV pipe and fittings are still used in premium construction because they muffle the sound of wastewater rushing through them, [21]: 149 but today they are rarely joined with traditional lead joints.

3. Drain-waste-vent system - Wikipedia

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

   Cost of materials, ease of installation, and resistance to corrosion all have come to favor Schedule 40 PVC DWV systems, which are replacing cast iron "hub" and "no-hub" DWV systems in many municipalities, while parts and skills associated with installing and maintaining cast iron systems are becoming increasingly scarce and costly.

4. Compression fitting - Wikipedia

   en.wikipedia.org/wiki/Compression_fitting

   A compression fitting 15 mm isolating valve. A compression fitting is a fitting used in plumbing and electrical conduit systems to join two tubes or thin-walled pipes together. . In instances where two pipes made of dissimilar materials are to be joined (most commonly PVC and copper), the fittings will be made of one or more compatible materials appropriate for the connect

5. Cast iron pipe - Wikipedia

   en.wikipedia.org/wiki/Cast_iron_pipe

   In cast iron pipe, the graphite forms flakes during the casting process, when examined under a microscope. Cast iron pipe was superseded by ductile iron pipe, which is a direct development, with most existing manufacturing plants transitioning to the new material during the 1970s and 1980s. Ductile iron pipe is different than cast iron, because ...

6. Pipe (fluid conveyance) - Wikipedia

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

   Iron based piping is subject to corrosion if used within a highly oxygenated water stream. [7] Aluminum pipe or tubing may be utilized where iron is incompatible with the service fluid or where weight is a concern; aluminum is also used for heat transfer tubing such as in refrigerant systems.

7. Polyvinyl chloride - Wikipedia

   en.wikipedia.org/wiki/Polyvinyl_chloride

   This material has almost entirely replaced the use of cast iron for plumbing and drainage, being used for waste pipes, drainpipes, gutters and downspouts. PVC is known as having strong resistance against chemicals, sunlight, and oxidation from water. [42] Double glazed units