4 inch x 4 inch PVC DWV Toilet Flange

4" PVC Closet Flange with 4" Hub – Designed for Code-Compliant Toilet Installations

This 4" x 4" PVC Closet Flange is engineered for secure connections between water closets and soil pipes in drain-waste-vent (DWV) systems. Manufactured from high-impact, non-corrosive polyvinyl chloride (PVC), it provides long-term performance in both new construction and remodel applications.

The flange hub is designed to solvent weld over 4-inch PVC DWV pipe, offering a strong mechanical bond. The smooth inner wall and reinforced ring construction ensure compatibility with common closet bolts and toilet bowl configurations while maintaining stability during and after installation.

Product Features

• ✅ Solvent-Weld Hub – 4-inch socket accepts nominal DWV pipe for permanent, watertight bonding using approved solvent cement.
• ✅ Full-Sized Flange Base – Solid construction supports the weight of the toilet and resists flexing during use or installation.
• ✅ Code-Ready Dimensions – Meets applicable dimensional standards under ASTM D2665 for DWV systems.
• ✅ Rotational Alignment (select models) – Certain versions feature a rotating metal or plastic ring to align bolt slots for easier closet bolt positioning.

Technical Specifications

• Material: Schedule 40 PVC
• Size: 4-inch nominal pipe size (hub x flange)
• Standards: Complies with ASTM D2665, CSA B181.2
• Temperature Rating: DWV use only, non-pressurized systems
• Mounting Holes: Compatible with standard toilet flange bolt patterns

Installation Notes

Install onto a properly cut and deburred 4" PVC DWV pipe using primer and solvent cement in accordance with manufacturer guidelines. Ensure the flange sits flush on finished flooring and is securely fastened to the subfloor with corrosion-resistant screws. For slab applications, a flush-mount model may be required. Closet bolts should be inserted and retained in the slot prior to toilet bowl placement.

Applications

• Toilet rough-ins in residential and light commercial buildings
• New DWV installations and toilet replacements
• Subfloor- and slab-mounted waste systems

Additional Considerations

Closet flanges must be installed with care to prevent rocking or movement that can compromise the wax seal. Code requires the flange top surface to be set flush with or above finished floor level to ensure proper bowl sealing.

The 4" PVC Closet Flange delivers a durable and consistent solution for anchoring toilets to DWV systems. Its material strength, corrosion resistance, and dimensional stability make it a dependable choice for code-compliant installations.