2 inch x 1-1/2 inch ABS DWV Reducing Coupling Plastic x Plastic

2 inch x 1-1/2 inch ABS DWV Reducing Coupling – Engineered for Code-Compliant Transitions

The 2 inch x 1-1/2 inch ABS DWV Reducing Coupling is designed for drainage, waste, and vent (DWV) applications requiring a size reduction without sacrificing system integrity. Fabricated from high-impact ABS, this fitting supports long-term performance in gravity-fed systems and is intended for use in non-pressurized applications.

Key Features

• ✅ DWV Rated – Built specifically for drain, waste, and vent systems operating under gravity flow conditions.
• ✅ One-Piece ABS Construction – Injection-molded for dimensional stability, chemical resistance, and strength-to-weight efficiency.
• ✅ Size Reduction – Transitions from 2-inch to 1-1/2-inch nominal pipe sizes while maintaining smooth internal flow characteristics.
• ✅ Solvent Weld Connection – Accepts standard primer and solvent cement for secure, leak-resistant bonding.
• ✅ Corrosion and Scale Resistant – Suitable for DWV use in residential and commercial systems, including under-slab and in-wall installations.

Technical Specifications

• Material: Acrylonitrile Butadiene Styrene (ABS)
• End Connections: Hub x Hub (Slip-fit)
• Pipe Size Compatibility: 2 inch x 1-1/2 inch nominal DWV pipe
• Standards: Meets ASTM D2661 and D3311 requirements
• Application: Non-pressurized DWV systems

Installation Guidelines

Installation requires standard ABS solvent welding procedures using ASTM-approved solvent cement. Ensure pipes are properly cut, deburred, and dry-fitted prior to final bonding. For optimal results, follow local code requirements and allow for adequate curing time before testing the system.

Common Applications

This reducing coupling is typically installed in residential and light commercial plumbing systems. It’s ideal for reducing branch lines to smaller vent or waste lines in confined spaces such as under sink connections or retrofit conditions.

Material Note

ABS offers excellent resistance to most household chemicals, does not support bacterial growth, and is not affected by soil conditions. It is approved for use in both aboveground and underground DWV installations (excluding hot water supply lines).