What does the abbreviation DWV stand for?

The abbreviation DWV stands for "Drain, Waste, and Vent." This term is crucial in plumbing because it encompasses the system of pipes that are used to remove waste and water from a structure while also allowing for ventilation to prevent pressure buildup within the system.

The drainage part refers to the pipes that carry wastewater away from fixtures, ensuring proper sanitation. The waste aspect emphasizes the discharge of solid and liquid waste. Venting is essential in the system to allow air to enter the plumbing system, which helps maintain proper flow and prevents siphoning of traps, thereby ensuring that wastewater can flow smoothly without any unpleasant odors entering the living space.

Understanding DWV systems is fundamental for anyone involved in plumbing, as it supports the integrity and efficiency of wastewater management in residential and commercial buildings.