1-1/4 inch PVC DWV Trap Adapter Plastic x Slip Joint

1-1/4 inch PVC Trap Adapter – Schedule 40, Slip Joint x Male Thread

The 1-1/4 inch PVC Trap Adapter is engineered for dependable transitions between tubular traps and Schedule 40 DWV piping systems. This fitting connects a slip joint to a solvent-welded pipe, offering a watertight connection in drainage and waste applications. Ideal for lavatory installations, it provides a professional-grade solution for horizontal or vertical trap-to-drain assemblies.

Manufactured from durable polyvinyl chloride (PVC), this adapter maintains structural integrity under typical DWV service conditions and complies with ASTM D2665 and D3311 dimensional standards for Schedule 40 PVC fittings.

Product Features

• Connection Type: Slip joint x Male NPT or solvent weld hub (depending on configuration)
• Nominal Size: 1-1/4 inch
• Material: White PVC (Schedule 40 rated)
• Seal: Neoprene compression washer with locknut (for slip joint end)
• Temperature Rating: 140°F max operating temperature
• Pressure Rating: Non-pressurized DWV only
• Standards Compliance: Meets ASTM D2665, D3311, and CSA B181.2

Installation Guidelines

The trap adapter installs using a standard slip joint connection to tubular piping, and either a solvent weld or male-threaded connection to the system drain pipe. Ensure pipe ends are clean and cut square. Use approved primer and solvent cement for solvent-weld joints or thread sealant for threaded configurations. The compression washer must seat uniformly around the trap arm to ensure a leak-free connection.

Typical Applications

• • Lavatory trap arm connections to branch waste lines
• • Under-sink assemblies in bathrooms and utility rooms
• • Horizontal or vertical configurations in 1-1/4 inch tubular drainage systems

Material Insight

Schedule 40 PVC is resistant to corrosion, scaling, and many household and commercial drain waste chemicals. Its rigidity and smooth internal walls make it suitable for long-term use in non-pressurized sanitary drainage and vent systems.

For code-compliant, leak-resistant drain transitions, this 1-1/4 inch PVC Trap Adapter offers a reliable interface between tubular and rigid DWV piping. Designed for straightforward installation and long-term performance in residential and light commercial systems.