In plumbing terminology, what does "DWV" signify?

"DWV" in plumbing terminology stands for "Drainage, Waste, and Vent." This designation is critical for understanding the system that manages wastewater in residential and commercial plumbing. The drainage portion refers to the pipes that transport wastewater away from fixtures to the sewer or septic system. The waste aspect specifically indicates the materials that are carried away, such as the materials from toilets and sinks. The vent component is essential for equalizing pressure in the plumbing system, allowing air to enter and preventing the creation of vacuums that could impede the flow of wastewater. Venting also helps to safely disperse gases that may accumulate in the waste piping. This combination of functions ensures that plumbing systems operate efficiently and safely, making the term "Drainage, Waste, and Vent" a vital concept for anyone working in plumbing.