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waste pipe

In modern plumbing, a drain-waste-vent (or DWV) is part of a system that allows air to enter a plumbing system to maintain proper air pressure to enable the removal of sewage and greywater from a dwelling. Waste is produced at fixtures such as toilets, sinks, and showers. As the water runs down, proper venting is required to avoid a vacuum from being created. As the water runs down air must be allowed into the waste pipe either through a roof vent, or the "drain waste vent" (DWV).

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  1. M

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  5. D

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  8. M

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  9. K

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  10. C

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  11. T

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  12. D

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  15. G

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  17. P

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  18. J

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  19. S

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