2 inch x 2 inch x 1-1/2 inch x 1-1/2 inch PVC DWV Double Reducing Wye Plastic x Plastic x Plastic x Plastic

2 inch x 2 inch x 1-1/2 inch x 1-1/2 inch PVC DWV Double Reducing Wye – Hub Connections

The PVC DWV double reducing wye is a molded fitting used in non-pressurized drainage, waste, and vent (DWV) systems to connect multiple branch lines into a common vertical or horizontal main. Its double configuration facilitates smooth directional changes while maintaining optimal hydraulic performance and system code compliance.

Constructed from durable polyvinyl chloride and compliant with ASTM D2665, this fitting features hub (socket) ends to accommodate solvent-welded joints. Its use is appropriate in multi-fixture configurations where efficient airflow and unobstructed waste transport are required.

Functional and Material Advantages

• ✅ Multiple Inlet Transitions – Double wye design enables simultaneous connection of two 1-1/2 inch branch lines to a 2 inch main system.
• ✅ DWV System Compatibility – Designed exclusively for non-pressurized applications per the requirements of building drainage codes.
• ✅ Material Durability – Fabricated from Schedule 40 PVC, offering chemical resistance and long-term dimensional stability.
• ✅ Smooth Flow Paths – Interior surfaces are engineered to reduce friction loss and minimize potential for clogging or turbulence at junctions.
• ✅ Standards Compliance – Manufactured to ASTM D2665 and NSF-listed for DWV systems, ensuring third-party verification and code acceptance.

Technical Specifications

• Nominal Sizes: 2 inch x 2 inch x 1-1/2 inch x 1-1/2 inch
• Configuration: Double reducing wye
• Material: Schedule 40 PVC (ASTM D2665)
• Connection Type: Hub (solvent-weld)
• System Use: Drain, waste, and vent (DWV) – non-pressurized only
• Certifications: NSF 14 / ASTM D2665 compliant

Installation Considerations

Install using primer and solvent cement specifically formulated for PVC DWV applications. Ensure all pipe ends are clean and square-cut prior to insertion into sockets. Allow proper curing time before system testing. Use only in accordance with local and model plumbing codes; not for use in pressurized systems.

Application Areas

Typically installed in horizontal drainage branches within residential or light commercial buildings, the double wye fitting allows multiple fixtures to discharge into a main drain line while maintaining required slope and air circulation. Suitable for installation in crawlspaces, walls, or slab systems where access is planned.

System Insight

Double wyes play a vital role in maintaining balanced pressure and unrestricted flow within DWV systems. Their use helps reduce the chance of airlock, backflow, or excessive system noise by directing flow through gradual, code-compliant junctions.