2 inch x 1-1/2 inch Copper DWV Reducing Coupling Copper x Copper

2 inch x 1-1/2 inch Copper DWV Reducing Coupling – Code-Compliant Transition for DWV Systems

The 2 inch x 1-1/2 inch copper DWV reducing coupling is designed for use in gravity drainage systems where a reduction in pipe diameter is required. Manufactured from high-quality copper, this fitting is intended for soldered (sweat) connections and provides a smooth interior surface to maintain flow efficiency and reduce turbulence in horizontal or vertical runs.

Professional Application

Engineered for drain, waste, and vent piping installations, this coupling is commonly specified in residential and light commercial builds. It supports transitions between 2 inch and 1-1/2 inch nominal copper DWV tubing in compliance with UPC/IPC standards.

Product Specifications

• Material: Wrought copper (C12200) for durability and corrosion resistance
• Connection Type: Female sweat x female sweat for soldered joints
• Applicable Standards: ASME B16.29, ASTM B75/B88 (DWV-grade copper)
• Pressure Rating: Suitable for non-pressurized DWV applications
• Temperature Range: Up to 400°F (204°C) with lead-free solder

Installation Guidance

Use standard copper fitting installation practices. All joining surfaces should be cleaned and fluxed before soldering. Compatible with lead-free solder and approved fluxes. Heating should be uniform to ensure full penetration of the joint without overheating adjacent pipe walls.

Tools Required

• Tube cutter or fine-tooth saw
• Deburring tool
• Lead-free solder, flux, and propane or MAPP gas torch

Common Uses

This fitting is intended for use in DWV applications such as fixture drains, branch lines, and vent systems. Often installed behind wall assemblies, under floors, or above ceilings where pipe size transitions are needed to maintain proper flow characteristics and meet code-mandated slope requirements.

Compliance Note

All copper DWV fittings must meet lead-free requirements under the Reduction of Lead in Drinking Water Act. This product complies with all current federal and state-level mandates for lead content in plumbing systems.