1-1/4 inch PVC DWV Wye Plastic x Plastic x Plastic

1-1/4" PVC Wye – DWV Solvent Weld Fitting for Branch Transitions

The 1-1/4" PVC Wye is a Drain, Waste, and Vent (DWV) fitting used to introduce a branch line into a vertical or horizontal drain path at a 45-degree angle. Its solvent weld hub connections provide a rigid, leak-resistant assembly for gravity drainage systems. This fitting is molded from Type I PVC for dimensional stability, chemical resistance, and long service life.

Technical Specifications

• Material: Polyvinyl Chloride (PVC), Cell Classification 12454 per ASTM D1784
• Nominal Size: 1-1/4" (all hub ends)
• Configuration: Standard Wye, 45° branch outlet
• Connection Type: Hub x Hub x Hub (solvent weld sockets)
• Applicable Standards: Conforms to ASTM D2665 (DWV fittings); NSF-certified for use in non-pressure DWV systems
• Temperature Rating: Rated for continuous service up to 140°F in non-pressurized systems

Performance Characteristics

• ✅ Corrosion-Resistant PVC – Withstands chemical exposure in waste streams and resists scaling or buildup
• ✅ Code-Compliant Design – Meets IPC and UPC specifications for proper branch entry into drainage systems
• ✅ Low Flow Restriction – 45-degree branch reduces turbulence compared to sanitary tees in horizontal drainage applications
• ✅ Solvent Weld Assembly – Forms permanent, rigid joints with approved PVC cement per ASTM D2855

Typical Applications

Used in residential and light commercial DWV installations, the 1-1/4" PVC Wye fitting is suitable for sink drains, lavatory branches, vent take-offs, and branch-to-stack connections. It is intended for above-ground or underground use in gravity flow piping systems where smooth redirection of waste or vent lines is required.

Installation Notes

Install using a two-step solvent cementing method (primer and cement) for code-compliant joints. Pipe ends must be square-cut, chamfered, and clean prior to assembly. Observe cure times before testing or backfilling. Wyes are not to be used in place of tees where vertical to horizontal transitions are required unless explicitly allowed by local code.

Material Insight

PVC DWV fittings offer low thermal conductivity, are non-conductive electrically, and resist bacterial and fungal growth. Lightweight and easy to cut, they provide jobsite efficiency and long-term performance in waste handling systems.

The 1-1/4" PVC Wye provides a reliable and code-approved solution for branching DWV systems with minimal flow disruption. Manufactured to strict tolerances, it ensures consistent joint integrity and compatibility in solvent-weld PVC piping layouts.