2 inch x 1-1/4 inch Copper Reducing Coupling Copper x Copper

2 inch x 1-1/4 inch Copper Reducing Coupling – Built for Smooth Transitions in DWV and Supply Systems

The 2 inch x 1-1/4 inch Copper Reducing Coupling is engineered to connect dissimilar pipe sizes in a variety of plumbing configurations. Ideal for drainage, waste, vent (DWV), and low-pressure water distribution applications, this coupling enables a precise, secure fit while maintaining system efficiency and compliance with modern code requirements.

Product Features

• Wrought Copper Construction: Manufactured from high-grade copper for corrosion resistance and long-term performance.
• Reducing Design: Facilitates a smooth transition between 2 inch and 1-1/4 inch nominal copper tubing, preserving system flow characteristics.
• Sweat (Socket) Connection: Accepts soldered joints with Type DWV or Type L copper tube; compatible with ASTM B88 specifications.
• Lead-Free Compliance: Fully compliant with lead-free plumbing codes under NSF/ANSI 61 and NSF 372 standards for potable water safety.
• Low-Profile Form: Ideal for installations in confined spaces or wall cavities where compact dimensions are required.

Specifications

• Material: Copper (Wrought)
• Size: 2 inch x 1-1/4 inch
• Connection Type: Socket x Socket (Sweat)
• Applicable Standards: ASME B16.22, NSF/ANSI 61, NSF 372, ASTM B75
• Application: DWV, water distribution (non-pressurized or low-pressure)

Installation Guidelines

• Clean and deburr copper tubing ends prior to insertion.
• Use lead-free solder and flux suitable for potable water systems.
• Apply heat evenly around the joint to achieve proper capillary action during soldering.
• Allow sufficient cooling before pressurizing the system to test for leaks.

Common Applications

This reducing coupling is widely used in residential and light commercial plumbing systems. It supports configurations where copper pipe transitions are required—such as branch connections for fixtures or modified retrofits to meet updated system layouts.

Did You Know?

Reducing couplings play a vital role in maintaining proper flow velocity and minimizing pressure loss when stepping down pipe sizes, especially in vertically stacked DWV systems or distribution manifolds.

The 2 inch x 1-1/4 inch Copper Reducing Coupling offers dependable performance and code compliance where durability and flow efficiency are essential. Whether you’re managing drainage or supply lines, this fitting ensures secure, long-lasting transitions in any high-quality plumbing installation.