Type DWV drain copper tubing is marked with what color identification stripe?

Type DWV (Drain, Waste, and Vent) copper tubing is specifically designed for drainage applications. The identification stripe on these tubes helps differentiate them from other types of copper tubing used in various plumbing applications.

The correct color for DWV copper tubing is yellow. This yellow stripe serves as a visual marker indicating that the tube is not intended for potable water use but rather for waste and drainage purposes. Proper identification is crucial for ensuring that installation and maintenance practices adhere to plumbing codes and industry standards, thereby preventing potential cross-contamination or misuse of materials in plumbing systems.

Other color stripes correspond to different plumbing types, such as red for fire sprinkler systems or blue for potable water supplies, which aids in the identification of the specific use of the tubing at a glance.