2 inch Copper DWV Coupling – CxC Fitting for Drain, Waste, and Vent Systems
The 2 inch Copper DWV Coupling is a solder-joint fitting used in non-pressurized drainage applications. It is engineered to connect two sections of DWV-grade copper tubing in horizontal or vertical waste lines. Constructed from seamless copper, this coupling supports code-compliant installations in residential and commercial systems where reliability and corrosion resistance are essential.
Designed for compatibility with ASTM B306 copper tubing, this coupling provides a permanent, rigid connection when installed using lead-free solder and standard plumbing practices. Its full-flow design ensures that internal diameter restrictions are minimized, supporting efficient waste removal throughout the system.
Product Features
- DWV-Specific Design Manufactured for use in non-pressurized drain, waste, and vent piping systems.
- Copper x Copper Solder Ends Slip joint on each end accommodates 2 inch nominal copper DWV tubing.
- High Corrosion Resistance Copper resists scale, pitting, and chemical degradation over time.
- Seamless Interior Promotes smooth waste flow and reduces the likelihood of buildup or blockages.
Specifications
- Size: 2 inch nominal
- Connection Type: CxC (Copper x Copper) sweat joints
- Material: Wrought copper conforming to ASTM B75/B88 standards
- Standard Compliance: ASME B16.29 for DWV fittings
- Application: Non-pressurized drain, waste, and vent piping
Installation Considerations
This coupling is installed using standard soft-soldering techniques with lead-free solder. Pipe ends should be cleaned and flux applied prior to joining. The fitting should be heated evenly to allow full capillary draw of solder into the joint. As a non-pressure fitting, this component is not intended for potable water supply lines or pressurized service.
Common Use Cases
DWV copper couplings are typically used in:
- Residential and commercial drainage stacks
- Waste arm extensions and fixture branch lines
- Vent risers and horizontal drain connections
Code and Safety Notes
All copper fittings used in DWV systems must comply with applicable plumbing codes. This coupling meets lead-free requirements under the Safe Drinking Water Act (SDWA) when required for proximity to potable systems.
The 2 inch Copper DWV Coupling provides a reliable joining method for copper waste systems. Its corrosion resistance, code conformity, and compatibility with standard DWV tubing make it a dependable choice for long-term infrastructure performance.
