4 inch OD ABS Push Fit Coupling Connects to Sewer and DWV

4 inch Fernco Push Connector – No-Hub Transition Fitting for DWV and Sewer Applications

The 4 inch Fernco Push Connector is a mechanical, non-pressure fitting designed for use in drain, waste, and vent (DWV) and gravity sewer systems. It provides a tool-free solution for connecting 4 inch hubless cast iron, PVC, or ABS piping in above-ground or below-grade installations, where solvent welding or traditional coupling methods may not be feasible.

This push-fit adapter utilizes a flexible elastomeric seal with an internal locking profile to ensure a secure connection without the need for clamps or adhesives. Its design allows for limited angular deflection and accommodates slight pipe misalignment while maintaining joint integrity in non-pressurized systems.

Product Features

• ✅ Tool-Free Installation – Push-fit design eliminates the need for solvent welding or clamping hardware.
• ✅ Code-Compatible Design – Intended for use in DWV systems under IPC, UPC, and local plumbing codes.
• ✅ Nonmetallic Construction – Fabricated from corrosion-resistant ABS suitable for indoor or soil-contact environments.
• ✅ Leak-Resistant Seal – Internal elastomeric gasket ensures water- and air-tight performance in gravity flow systems.
• ✅ Ideal for Retrofit Work – Especially useful in confined spaces or situations requiring minimal disassembly of existing piping.

Technical Specifications

• Material: ABS body with elastomeric internal gasket (meets ASTM D2661 / D3965)
• Size: 4 inch nominal fitting diameter
• Connection Type: Push-to-connect for hubless DWV and sewer piping
• Application: Drainage, waste, and non-pressure sewer piping

Installation Notes

Ensure the pipe end is clean, square-cut, and free of burrs prior to insertion. Lubrication is not typically required, but may be used if approved by the manufacturer. Insert the pipe fully until it seats within the internal gasket stop. Confirm alignment and verify local code compliance for use in permanent installations. Not intended for pressurized or hot water systems.

Use Cases

Commonly installed in residential and light commercial DWV systems during remodels, fixture replacements, or repairs. Also applicable in slab or crawl space retrofits where access to pipe joints is limited. Compatible with cast iron, PVC, and ABS materials of matching nominal size.

Material Consideration

ABS (Acrylonitrile Butadiene Styrene) is a lightweight thermoplastic commonly used in DWV applications due to its impact resistance, dimensional stability, and ease of fabrication. When combined with elastomeric sealing, it offers a durable, corrosion-resistant option for mechanical pipe joining.