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The MUELLER STREAMLINE ABSADAPTHFIP3 is a 3-inch ABS DWV female adapter designed to transition a solvent weld hub connection to a female NPT threaded connection in drain, waste, and vent piping systems. This fitting allows plumbers to connect smooth-pipe ABS runs to threaded fittings or threaded cleanout plugs without switching pipe materials. The adapter is rated for service temperatures from -40 degrees F to 180 degrees F and carries CSA B181.1, ASTM D2661, ASTM D2665, ASTM D3311, ASTM D3965, UL Listed 94V-0, and NSF/ANSI Standard 14 certifications. It is manufactured domestically and is not intended for use with compressed air or other gases under any circumstances.
This adapter is used in residential and light commercial plumbing applications wherever a DWV ABS pipe run must terminate or connect at a threaded fitting. Typical installations include cleanout assemblies, trap adapters, and transitions to threaded ABS or metal fittings in drain and vent stacks. The hub end accepts standard 3-inch ABS pipe via solvent cement, while the female NPT end accepts a standard male-threaded fitting. It is installed by licensed plumbers working on new construction or repair of gravity-drain DWV systems.
Designed as an OEM-style replacement or new-install fitting for 3-inch ABS DWV piping systems following applicable plumbing codes.
Installation should be performed by a licensed plumber in accordance with the International Plumbing Code (IPC) or applicable local code. Shut off water supply and ensure the drain system is depressurized before cutting into existing pipe. The hub end requires a clean square cut, light sanding, and approved ABS solvent cement applied to both the pipe and socket. Do not pressure-test this fitting with compressed air or other gases; use water pressure testing only per code requirements.
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