4 inch ABS DWV Cleanout Plug

4 inch ABS DWV Cleanout Plug – Threaded Access Closure for Drainage Systems

The 4 inch ABS DWV Cleanout Plug is a threaded fitting used to seal access points in non-pressurized drain, waste, and vent (DWV) piping systems. It provides a removable closure that allows for future cleaning, inspection, or system maintenance without cutting into the piping. This plug is designed to be solvent-welded into an ABS cleanout fitting and sealed using its molded male thread profile.

Manufactured from Acrylonitrile Butadiene Styrene (ABS), the plug offers high impact strength, low thermal conductivity, and chemical resistance suitable for residential and commercial DWV applications. It is intended for above-grade or vertical installations in accordance with local plumbing code requirements.

Product Specifications

• ✅ Size: 4 inch nominal diameter
• ✅ Material: ABS thermoplastic compliant with ASTM D2661
• ✅ Thread Type: Molded male NPT-style thread for secure engagement with ABS cleanout fittings
• ✅ Application: Access closure for DWV systems; not intended for pressurized use
• ✅ Standard Compliance: Meets applicable IPC/UPC and CSA B181.1 code requirements

Installation Guidelines

Thread the cleanout plug into the corresponding 4 inch ABS cleanout adapter or fitting using appropriate torque. Apply PTFE tape or ABS-compatible thread sealant to improve sealing under gravity flow. Avoid overtightening to prevent thread deformation or cracking. The plug should remain accessible after installation to comply with code requirements for cleanout visibility and reach.

Common Applications

This plug is typically used in vertical stacks, building drains, and branch lines to allow for cleaning with mechanical augers or hydro-jet equipment. It is suited for both new construction and retrofit systems that require code-compliant cleanout access points.

Material Characteristics

ABS provides dimensional stability, UV resistance in indoor environments, and excellent handling characteristics. It remains impact-resistant over a broad range of service temperatures, making it a preferred material in code-approved DWV assemblies.

The 4 inch ABS DWV Cleanout Plug is a standard-access fitting for gravity-flow piping systems. It supports system integrity while providing essential maintenance access for drain lines and building sewer infrastructure in accordance with plumbing code practices.