Drain-waste-vent system
Plumbing fixture / From Wikipedia, the free encyclopedia
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"Stink pipe" redirects here. See also Sanitary sewer § Ventilation.
A drain-waste-vent system (or DWV) is the combination of pipes and plumbing fittings that captures sewage and greywater within a structure and routes it toward a water treatment system. It includes venting to the exterior environment to prevent a vacuum from forming and impeding fixtures such as sinks, showers, and toilets from draining freely, and employs water-filled traps to block dangerous sewer gasses from entering a plumbed structure.
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