3 inch PVC DWV Double Wye Plastic x Plastic x Plastic x Plastic

PVC Double Wye Fitting – Schedule 40, ASTM D2665 Compliant for DWV Systems

The PVC Double Wye fitting is a molded, solvent-weld DWV (Drain, Waste, and Vent) fitting used to join four pipes at 45-degree branch angles. It is designed for gravity-flow drainage applications, allowing for dual lateral branches to merge into a common flow direction with minimal hydraulic disruption. The configuration ensures efficient flow transitions while maintaining code-compliant system layouts.

Manufactured from Type I, Grade I PVC compound meeting ASTM D1784 Cell Classification 12454, the fitting conforms to dimensional requirements under ASTM D2665. The smooth interior walls and sweeping directional geometry reduce turbulence, internal resistance, and solids build-up, making it ideal for maintaining consistent flow velocity in horizontal drain runs.

Technical Specifications

• Material: PVC (Polyvinyl Chloride) Schedule 40, non-pressure rated
• Configuration: Double Wye – 45° lateral branches
• Connection Type: Hub (socket) ends for solvent-weld installation
• Applicable Standards: ASTM D2665, CSA B181.2
• Temperature Rating: Up to 140°F (non-constant) per DWV system design
• Use Classification: Non-pressurized drainage and vent piping

Installation Guidelines

This fitting must be installed using primer and solvent cement approved for PVC piping. Pipe ends should be square-cut, deburred, and dry-fit prior to assembly. Adhere to ASTM D2855 guidelines for joint preparation and cure times. Orientation of the branches should maintain proper fall and alignment as specified by local plumbing code to ensure compliant flow transitions.

Common Applications

Used in residential and commercial DWV systems to connect horizontal branch lines to a main drain stack. Particularly effective in building drain layouts where multiple waste lines converge. Also used in venting systems where simultaneous fixture discharge is expected. Suitable for slab, wall, and crawlspace installations.

Material and Code Compliance Notes

PVC DWV fittings are resistant to a wide range of domestic wastewater chemicals, corrosion, and biofilm development. This product meets NSF/ANSI 14 certification for DWV use and complies with IPC and UPC standards. Not suitable for pressure applications or installation in systems exposed to UV without protection.

The PVC Double Wye fitting provides a reliable, code-approved solution for high-efficiency drainage system layouts. Designed for consistent dimensional fit and long service life in properly supported Schedule 40 DWV assemblies.