1-1/4 inch PVC DWV Adapter Plastic x Female

1-1/4 inch PVC DWV Adapter – Designed for Code-Compliant Drain, Waste, and Vent Systems

The 1-1/4 inch PVC DWV adapter is a solvent-weld fitting used to join dissimilar or same-size components within drain, waste, and vent piping systems. Constructed from Schedule 40 PVC, it is suitable for gravity flow applications where corrosion resistance and dimensional stability are critical.

This fitting provides a transition point between male-threaded or hub pipe ends and smooth-wall socket configurations, ensuring a mechanically secure, watertight connection when properly installed using PVC primer and solvent cement. The adapter is engineered to meet ASTM D2665 and D3311 specifications for DWV fittings, delivering reliable performance under standard plumbing conditions.

Key Features

• Material: PVC (Polyvinyl Chloride), white, non-toxic, and lead-free
• Size: 1-1/4 inch nominal
• Configuration: One end socket, one end male pipe thread (MPT)
• Standard: Complies with ASTM D2665 and CSA B181.2 for DWV systems
• Operating Range: Non-pressurized, up to 140°F intermittent service

Installation Guidance

This fitting is intended for solvent welding. Ensure surfaces are clean and dry before applying primer and cement to both the pipe and socket ends. Allow full cure time per manufacturer's specifications before introducing any flow. Pipe threads should not be overtightened to prevent splitting or stress fractures in the plastic.

Use thread sealant designed for PVC components on the male-threaded portion if sealing into a threaded female port. Avoid cross-threading and use proper torque to prevent leaks.

Typical Applications

• Residential and commercial DWV piping systems
• Vent stack connections
• Fixture drainage transitions
• Retrofitting or modifying vertical or horizontal runs where a 1-1/4 inch adapter is needed

Performance Considerations

• Working Pressure: Not rated for pressurized service
• UV Resistance: Not intended for outdoor exposure without protection
• Maintenance: Virtually maintenance-free when properly installed

Note:

PVC DWV fittings should only be used in gravity flow and venting applications. They are not suitable for hot water distribution or pressurized potable systems. Verify with local code requirements before installation.

The 1-1/4 inch PVC DWV adapter is a key component for transitions within non-pressurized sanitary systems, engineered to provide a consistent seal and meet code requirements for modern plumbing assemblies.