3 inch PVC DWV Coupling Plastic x Plastic

3 inch PVC DWV Coupling – Socket Connector for Non-Pressurized Drainage Systems

The 3 inch PVC DWV Coupling is designed for solvent-welded joints in non-pressurized drain, waste, and vent (DWV) piping systems. This fitting provides a secure, in-line connection between two lengths of Schedule 40 PVC pipe of the same nominal diameter, maintaining continuity and alignment throughout the system.

Manufactured from rigid PVC conforming to industry standards, this coupling is used to extend, repair, or reconfigure DWV piping networks in both residential and commercial settings. It features socket-style ends for permanent bonding using primer and solvent cement in accordance with plumbing code requirements.

• ✅ Full-Socket Design – Provides uniform pipe engagement depth for structural integrity and long-term performance.
• ✅ Schedule 40 PVC Construction – Durable thermoplastic material resists corrosion, scaling, and degradation from common waste stream chemicals.
• ✅ Code-Compliant Connection – Engineered to meet dimensional and material specifications under ASTM D2665 and D3311 standards.

Installation Guidelines

Before installation, verify that pipe ends are clean, square-cut, and chamfered. Apply primer and solvent cement per manufacturer instructions, then insert the pipe fully into the socket. Allow sufficient cure time before testing the system. Proper joint preparation is essential to maintaining pressure-free sealing performance in gravity-fed systems.

Technical Specifications

• Material: PVC (Polyvinyl Chloride)
• Nominal Size: 3 inches
• Connection Type: Socket x Socket (Slip Fit)
• Pipe Schedule: 40
• Application: Drain, Waste, and Vent (DWV)
• Standards: ASTM D2665, ASTM D3311

Typical Applications

This coupling is used in both horizontal and vertical DWV systems, including branch connections, repair sleeves, and extension runs. Suitable for use in above-ground or buried installations, provided system design and local code allow for solvent-welded joints.

Material Performance

Schedule 40 PVC exhibits excellent resistance to acids, alkalis, and microbial growth. Its smooth interior surface helps prevent blockage by reducing flow resistance and solids buildup within the piping system.

The 3 inch PVC DWV Coupling is a standard component for building drainage systems requiring rigid, permanent joining of pipe sections. It is compatible with all conventional solvent-weld DWV fittings and supports long-term system reliability when installed according to best practices.