What does the abbreviation DWV stand for in plumbing?

The abbreviation DWV stands for Drainage, Waste, and Vent, which are essential components of a plumbing system. This term encompasses the methods and materials used to manage waste water and sewage from fixtures in plumbing systems.

In this context, 'Drainage' refers to the network of pipes designed to remove waste water from buildings. 'Waste' signifies the materials expelled from plumbing fixtures, such as sinks and toilets. 'Vent' denotes the pipes that allow air to enter the drainage system, thereby preventing pressure build-up and ensuring that waste can flow freely. Together, these elements work to effectively transport waste away from living spaces and maintain proper plumbing function.

Understanding the components of DWV systems is crucial for plumbing professionals, as it lays the foundation for building codes, installation practices, and troubleshooting common drainage issues.