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The MUELLER STREAMLINE CLOPLPLUG112 is a square head cleanout plug made from ABS plastic, sized at 1-1/2 inches in diameter. It is designed to seal cleanout fittings in drain, waste, and vent (DWV) piping systems, providing a removable closure point for pipe inspection and clearing blockages. Domestically sourced, this plug is a standard component in residential and light commercial plumbing rough-in work. Licensed plumbers and drain service technicians install this type of fitting as part of code-compliant DWV system assemblies.
This cleanout plug is suited for use in residential and light commercial drainage systems where a 1-1/2 inch cleanout access point is required. It threads into a compatible ABS cleanout fitting, allowing service access without disturbing the surrounding pipe assembly. The square head drive allows removal and reinstallation with a standard square-drive wrench or socket.
Designed as an OEM-style replacement or new-installation component for 1-1/2 inch ABS DWV cleanout fittings in residential and light commercial drain, waste, and vent piping systems.
Installation and removal should be performed by a licensed plumber in accordance with applicable local plumbing codes and the IPC. Before servicing the cleanout plug, confirm the drain line is not under pressure and isolate the affected section as needed. Use a properly sized square-drive wrench or socket to avoid stripping the head. Do not overtighten on reinstallation, as ABS threads can be damaged by excessive torque.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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