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

PVC DWV Reducing Coupling – For 2" x 1-1/2" Transitions in Gravity Drainage Systems

The PVC DWV Reducing Coupling is designed for solvent-weld transitions between 2-inch and 1-1/2-inch nominal pipe sizes in non-pressurized drain, waste, and vent (DWV) piping systems. Manufactured from rigid polyvinyl chloride (PVC), this fitting supports code-compliant installations in both residential and light commercial applications.

This reducing coupling allows for diameter transitions while maintaining system slope and flow efficiency. Socket ends are designed to fit standard Schedule 40 DWV piping and comply with ASTM and CSA standards for PVC fittings used in sanitary drainage systems.

Key Performance Features

• ✅ Material: Schedule 40 PVC – corrosion-resistant and suitable for indoor and buried DWV use
• ✅ End Connections: Slip x Slip solvent weld sockets for 2" and 1-1/2" nominal pipe sizes
• ✅ Standards Compliance: Manufactured to ASTM D2665 and CSA B181.2 for DWV fittings
• ✅ Transition Function: Allows for direct reduction in piping diameter while maintaining a sealed joint
• ✅ Temperature Rating: Suitable for systems operating up to 140°F (60°C) under intermittent flow

Installation Considerations

All pipe ends should be square-cut, deburred, and cleaned before solvent welding. Use approved primer and solvent cement formulated for PVC DWV applications. Follow manufacturer cure times based on ambient temperature and pipe diameter. Support piping per local plumbing code requirements to prevent joint stress.

Applications

Used in vertical and horizontal DWV systems, including branch-to-stack transitions, fixture drains, and remodeling scenarios requiring size reduction. Suitable for gravity-based drainage systems only—do not use in pressurized water or gas systems.

Regulatory Note

This product is suitable for installation under the Uniform Plumbing Code (UPC), International Plumbing Code (IPC), and other applicable regional standards governing DWV fittings. Confirm sizing compatibility and local code allowances before use.