What type of pipe is most commonly used for drain, waste, and vent (DWV) systems?

The most commonly used type of pipe for drain, waste, and vent (DWV) systems is PVC (Polyvinyl Chloride) or ABS (Acrylonitrile Butadiene Styrene). This is due to several key advantages that these materials offer for plumbing applications.

PVC is widely favored because it is lightweight, easy to handle, and resistant to corrosion and chemical damage, making it ideal for carrying wastewater. It is also relatively inexpensive, which contributes to its popularity in both residential and commercial plumbing installations. Additionally, PVC pipes can be easily cut and joined with solvent cement, allowing for efficient and secure fittings.

ABS also shares many of these benefits. It is known for its strength, impact resistance, and ability to handle a range of temperatures, making it suitable for various environments and plumbing systems. Its black color makes it easily distinguishable from PVC, and it is similarly simple to install.

Together, these materials dominate the DWV sector because they effectively meet the necessary performance criteria — including flexibility, durability, and cost-effectiveness — while adhering to plumbing codes and standards. Other pipe materials, such as copper, brass, galvanized steel, and polyethylene have specific applications but are not as commonly utilized for drain, waste, and vent systems due