| Most people think that the plumbing
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| | free flow of drain water.
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| system in a home is more complicated than
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| | All sewage will eventually reach the
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| it really is because of it's network of
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| | waste and vent stack. The waste water
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| pipes and valves. Once you recognize the
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| | flows in the sewer line and exits the
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| major components and the roles they play,
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| | house via a municipal sewage system or a
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| home repairs are relatively easy to do.
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| | private septic tank. In the meantime,
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| Most home plumbing systems are composed
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| | sewer gas rises through the vent and
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| of three things: the water supply system,
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| | escapes through the roof vent, thus
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| the fixtures and appliances, and the
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| | rendering it harmless.
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| drainage system. Water enter a home
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| | Most of the pipes in modern homes are
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| through a main supply line, either a
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| | made of copper but plastic is becoming
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| municipal water company or a private
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| | more popular. Homes build before the
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| well. If it comes from a municipal
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| | 1950's usually had pipes that were made
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| source, it must first pass through a
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| | of galvanized iron. Iron pipes can lead
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| meter which measures the amount of water
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| | to water that looks rusty when it first
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| used.
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| | comes through the fixtures.
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| Once the water from the main supply
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| | Most pipes in the drainage waste system
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| enters the house, the branch line splits
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| | is made of plastic or cast iron. They can
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| off and joins the water heater. From
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| | be one and a quarter inches to four
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| there, the hot and cold water lines run
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| | inches in diameter to allow easy passage
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| parallel to each other to all the
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| | of waste water through the pipes. Lead
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| fixtures and appliances in the house.
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| | pipes are no longer used in home
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| Once the water becomes waste, it runs
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| | plumbing, though for the waste drainage
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| into a trap and then into the drain
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| | system they do not pose a health hazard.
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| system which works totally by gravity.
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| | Slope is an important factor in the waste
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| Waste water flows downhill through a
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| | drainage system, and each section must
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| series of large diameter drain pipes,
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| | have the proper degree of slope to allow
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| which are attached to a system of vent
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| | the system to function as intended,
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| pipes. Vent pipes permit air to enter the
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| | working with gravity to remove the
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| system through a roof vent. This fresh
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| | wastes.
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| air prevents suction that would stop the
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