Which type of material is typical for DWV fittings to be used with?

DWV (Drain, Waste, Vent) fittings are primarily designed to work with plastic pipes, making this choice the most appropriate. Plastic materials such as PVC (Polyvinyl Chloride) and ABS (Acrylonitrile Butadiene Styrene) are favored for DWV systems due to their lightweight nature, resistance to corrosion, and ease of installation. These materials also provide good flow characteristics and can easily be joined with solvent cement, which is specific to plastic piping systems.

Plastic pipes are particularly beneficial in residential plumbing systems, as they are less prone to leaks and require less labor for installation compared to metal counterparts. They also have excellent chemical resistance, making them suitable for the diverse range of waste materials encountered in plumbing.

The other types of materials mentioned have specific applications but are not typically used with DWV fittings. For instance, while metal pipes may be used in some plumbing applications, they are more common in water supply systems or specific industrial applications rather than in standard DWV configurations. Wood pipes are rarely used today due to their susceptibility to rot and deterioration, and composite pipes, which may contain a mixture of materials, are less common in traditional DWV applications. Thus, plastic pipes are the standard and widely accepted choice for DWV fittings