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2. Drain cleaner - Wikipedia

   en.wikipedia.org/wiki/Drain_cleaner

   However, drawbacks include a reach that is normally limited to 25 feet (7.6 m), and the potential for the twisting cable to scratch the ceramic surfaces of plumbing fixtures. They are also only effective on small-diameter pipes (40–50 millimetres (1.6–2.0 in)) rather than main sewer pipes (110 millimetres (4.3 in)).

3. Piping and plumbing fitting - Wikipedia

   en.wikipedia.org/wiki/Piping_and_plumbing_fitting

   A plug is a short barbed fitting with a blank end that can only be used with PEX piping to end the continuation of a water line that is no longer in use due to tying in elsewhere within the system or to seal the end of a water line which may be used for future use in the case of additional facilities. All plugs are sealed watertight with a PEX ...

4. Core plug - Wikipedia

   en.wikipedia.org/wiki/Core_plug

   The Welch plug is a type of core plug that is made from a thin disc of metal. The Welch plug is dome-shaped and inserted into the casting hole with the convex side facing outwards. [ 6 ] When installed by striking the Welch plug with a hammer, the dome collapses slightly, expanding it laterally to seal the hole.

5. Roto-Rooter - Wikipedia

   en.wikipedia.org/wiki/Roto-Rooter

   Roto-Rooter is the largest provider of plumbing repair and sewer and drain cleaning services in both countries. [ citation needed ] International franchise operations have been established in Canada , [ 4 ] Japan , the Philippines , Hong Kong , Indonesia , Singapore , Brazil , South Africa , and Australia .

6. Separator (oil production) - Wikipedia

   en.wikipedia.org/wiki/Separator_(oil_production)

   Oil and gas separators can have three general configurations: vertical, horizontal, and spherical.Vertical separators can vary in size from 10 or 12 inches in diameter and 4 to 5 feet seam to seam (S to S) up to 10 or 12 feet in diameter and 15 to 25 feet S to S. Horizontal separators may vary in size from 10 or 12 inches in diameter and 4 to 5 feet S to S up to 15 to 16 feet in diameter and ...

7. Drain-waste-vent system - Wikipedia

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

   A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.