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The MUELLER STREAMLINE PDWV4803112 is a PVC DWV adapter fitting designed to connect a hub (slip) pipe end to a female iron pipe (FIP) threaded connection in drain, waste, and vent piping systems. Sized at 1-1/2 inches, this fitting bridges smooth-end PVC pipe to internally threaded fittings or fixtures, allowing a clean transition between connection types. It is a standard component in residential and light commercial DWV rough-in work, typically installed by licensed plumbers during new construction or remodel projects.
This adapter is suited for gravity-flow drain, waste, and vent applications where PVC Schedule 40 DWV pipe transitions to a female-threaded port on a fixture, trap adapter, or fitting. The 1-1/2 inch size is common in lavatory drain lines, P-trap assemblies, and branch drain connections. It is not rated for pressure service and should be used only in non-pressure DWV systems.
Designed as an OEM-style replacement fitting for 1-1/2 inch PVC DWV piping systems using hub and female iron pipe thread connections in residential and light commercial drain, waste, and vent applications.
Installation is performed by a licensed plumber following local plumbing codes and IPC or UPC requirements. Shut off water supply and verify the drain line is clear and dry before solvent-welding the hub connection. Use the appropriate PVC primer and solvent cement for DWV-rated fittings, and allow full cure time before restoring flow. The FIP threads should be joined with PTFE tape or pipe thread sealant rated for PVC use.
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