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The MUELLER STREAMLINE PDWV4803-3IN is a 3-inch PVC DWV adapter fitting designed to transition between hub and female iron pipe (FIP) threaded connections in drain, waste, and vent piping systems. This fitting accepts a plain pipe end into its socket hub on one side and connects to a female threaded FIP port on the other, allowing plumbers to join PVC DWV pipe to threaded iron or other threaded fittings without additional adapters. It is a standard component in residential and light commercial drainage installations.
This adapter is used in DWV systems where a PVC hub connection must mate to a female iron pipe thread. Typical installations include drain line transitions, cleanout assemblies, and connections to threaded trap arms or building drain fittings. The 3-inch size suits main drain runs, closet flanges, and similar high-flow drainage applications commonly found in residential construction and renovation work.
Designed as an OEM-style replacement fitting for 3-inch PVC DWV piping systems using hub and female iron pipe threaded connections in residential and light commercial drain, waste, and vent applications.
Installation is performed by licensed plumbers in accordance with the International Plumbing Code (IPC) and applicable local codes. Shut off water supply and ensure the drain system is clear before beginning work. The hub end is joined to PVC pipe using primer and solvent cement per the fitting manufacturer instructions; do not use solvent cement on the threaded FIP port. Apply thread sealant tape or compound to male threads before making the FIP connection.
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