3 inch x 2 inch PCV DWV Reducing Coupling Plastic x Plastic

3" x 2" PVC DWV Reducing Coupling – For Gravity Drainage Transitions

The 3" x 2" PVC DWV Reducing Coupling is designed to connect two different pipe diameters in non-pressurized drain, waste, and vent (DWV) systems. This fitting allows a seamless transition between 3-inch and 2-inch Schedule 40 PVC piping while maintaining alignment and flow direction within the system layout.

Manufactured from rigid polyvinyl chloride (PVC), this coupling meets industry standards for DWV applications and is suitable for use in both residential and commercial plumbing systems. It provides a reliable, solvent-weld connection that supports long-term service life with resistance to chemical degradation, corrosion, and microbial growth.

Technical Specifications

• Size: 3" x 2"
• Material: PVC, Schedule 40
• Connection Type: Socket x Socket (Slip Fit)
• Application: Drain, Waste, and Vent (DWV) Systems
• Standards: ASTM D2665, ASTM D3311

Key Features

• ✅ Dimensional Precision – Machined to industry tolerances for proper pipe insertion and solvent bonding.
• ✅ Chemical Resistance – PVC material is non-reactive to common household and industrial waste compounds.
• ✅ Compact Profile – Ideal for transitions in confined spaces or retrofit work where alignment is critical.

Installation Guidance

This reducing coupling is installed using standard solvent-welding procedures. Surfaces must be clean and properly primed before cement application. Pipe ends should be inserted fully to the stop within the fitting sockets. Adhere to all local code requirements and curing time recommendations prior to system testing.

Applications

Commonly used in DWV systems for sanitary drainage line size transitions—such as connecting fixture arms to branch lines or adapting older plumbing infrastructure to updated layouts. Suitable for both horizontal and vertical piping configurations in above-ground and below-grade installations.

Material Advantages

Schedule 40 PVC provides long-term durability in corrosive environments, with low material weight for ease of handling and installation. It is unaffected by rust, scale, or biological contaminants, making it a preferred choice for sanitary systems.

The 3" x 2" PVC DWV Reducing Coupling offers a reliable and code-compliant solution for joining dissimilar pipe sizes within drainage systems. When installed correctly, it ensures secure transitions and supports system performance over time in compliance with plumbing standards.