Which materials are commonly used for drain, waste, and vent piping?

The selection of PVC, ABS, cast iron, and copper as the commonly used materials for drain, waste, and vent (DWV) piping is grounded in their functional properties and suitability for plumbing applications.

PVC (Polyvinyl Chloride) is widely appreciated for its corrosion resistance, lightweight nature, and ease of installation. It is a major choice in modern plumbing systems due to its affordability and ability to handle wastewater without degrading.

ABS (Acrylonitrile Butadiene Styrene) is another thermoplastic often used in DWV systems. It shares similar characteristics with PVC but is known for its strength and impact resistance, making it suitable for colder temperature applications.

Cast iron has been a traditional choice for drainage systems, prized for its durability and ability to handle high-temperature waste. It also offers excellent sound insulation properties, which minimizes noise when waste is moving through the pipes.

Copper is less commonly used now in the context of DWV due to its cost and susceptibility to corrosion, but it is still recognized for its longevity and natural antibacterial properties. It is occasionally seen in specific applications within drainage systems, particularly in areas where high temperatures are involved.

Each of these materials has thermal and chemical resistances that make them appropriate for various plumbing contexts