4 inch x 3 inch PVC DWV Toilet Flange

4" x 3" PVC Closet Flange – Built for Code-Ready Toilet Installations

The 4" x 3" PVC Closet Flange is a critical component for securely anchoring toilets to the drainage system. Constructed from high-strength polyvinyl chloride, this flange ensures a stable and sealed transition between the toilet outlet and the drainpipe. Its robust structure provides long-term reliability in both new installations and retrofit applications.

Performance-Driven Design

• ✅ Solvent Weld Connection Engineered for solvent weld or inside-fit applications, offering a permanent bond and minimizing movement.
• ✅ Durable PVC Construction Resistant to corrosion, chemical damage, and microbial growth.
• ✅ Code Compliant Manufactured to meet ASTM D2665 and CSA B181.2 specifications for DWV systems.
• ✅ Reinforced Ring Stainless steel or corrosion-resistant metal ring options available on some models for added structural integrity under load-bearing conditions.

Specifications

• Nominal Size: 4" x 3"
• Material: Schedule 40 PVC
• Connection: 4" hub over pipe, 3" spigot inside pipe
• Standards: Compliant with UPC, IPC, and local plumbing code requirements

Installation Recommendations

This flange is designed to install over 3" PVC pipe or inside 4" pipe. Ensure a dry fit before solvent welding, and properly align mounting holes with the finished floor for secure bolt placement. When anchoring to subflooring, use corrosion-resistant fasteners to prevent long-term degradation.

In floor-flange applications, the use of a wax ring or sealant gasket at the toilet base is essential for preventing sewer gas escape and fluid intrusion.

Applications

Typically used in residential and commercial bathroom installations to mount toilets while providing a watertight and mechanically sound connection to the building’s DWV system. Suitable for both concrete slab and raised subfloor installations.

Did You Know?

PVC closet flanges are a preferred alternative to cast iron due to their lighter weight and resistance to rust, making them ideal for both remodels and new construction in modern code-compliant projects.

With its solvent weld connection and structural durability, the 4" x 3" PVC Closet Flange is a trusted solution for contractors demanding reliable, code-compliant toilet installations. Ensure the success of your plumbing projects with fittings engineered for performance and longevity.